bluuebunny/crossref_metadata_2025 huggingface dataset:
Maintaining and Improving the Environmental Cleanliness in Semarang Municipality in the Era of Industrial Revolution 4.0
Authors: Chandra Oktiva Herry
Published: October 2019

Language produced in a specific event of communication will have its form and function. Some messages are delivered in direct ways meaning the form and the functions are symmetric; some others are delivered in indirect ways, asymmetric. Direct or indirect ways will give different perceptions to those who receive the content of the message. Considering the face of receivers is one of the principles that should be made by policy makers as they communicate with people in public space. This article aims to explain the forms of language used to prohibit littering and the way the maker of prohibition thinks about the writing of littering. The research is conducted by using non-participatory observation method. This, then, is followed by applying note taking technique and recording. The result shows mostly the writings of littering prohibition are made an indirect way and less number in indirect way. Having a direct way means society is placed as subordinate in relation to the authorities. Even though less in number, indirect littering prohibition shows some writings see an equal position between the writer and reader. Both take a similar point of view on littering.
Carboxylesterase Concentration in Mouse Exposed to Particulate Matters on Inhalation Exposure of Prallethrin and d-Phenothrin Mixture
Authors: Santiasih Indri , Titah Harmin Sulistiyaning , Hermana Joni
Published: October 2019

CE enzyme applied critical hydrolysis of pyrethroid families such as prallethrin and d-phenothrin, this active ingredient was commonly contained in mosquito repellent (MR). The previous study found that MRs as particulate matters (PMs) were very hazardous for living organisms due to the characteristics of number and mass concentration. This study examined the CE concentration in Mus musculus exposed to PM on inhalation exposure of prallethrin and d-phenothrin mixture. The lower dose was a mixture of 0.000141 mg/L prallethrin and 0.104 mg/L d-phenothrin, while the higher dose was a mixture of 0.00141 mg/L prallethrin and 1.04 mg/L d-phenothrin. Prallethrin and d-phenothrin were dissolved in acetonitrile, then diluted several times to obtain the preferred concentration. The solution was inflated with air through a diffuser to generate PMs which inserted into the chamber contained mice. The experimental group was divided into three, namely: positive control (PC), and lower- and higher-dose treatment groups, with three replicates for each group. The results illustrate that lower and higher dose demonstrated major differences. The statistical analysis confirmed that CE concentration had significant differences between groups. The increase in pyrethroid concentration followed by the increase of CE concentration, It indicated that the increasing CE substrates would be followed by the increasing of protein synthesis including CE. PMs in terms of number concentration of the largest (particles/L) is 0.3 µm, followed by 0.5 µm, 1 µm, and 5 µm. Approximately 99.86 % of the mass concentration the breathing zone is contributed by respirable particles (fine and ultrafine particles). Even if ultrafine particles are the largest number concentration, they have no significant contributions to the mass. A very abundant of fine and ultrafine particles affects they were beyond detection limit instruments, thus, they have no significant relationship with CE concentration, even though number concentration is more prominent than the mass concentration in the toxicological field, due to the high surface area of ultrafine particles.
Water Bodies Quality along Paddy Field in Karang Ploso Sub District, Malang City, Indonesia
Authors: Gustinasari Kiki , Hermana Joni , Pandebesie Ellina S.
Published: October 2019

Agricultural activities cannot be separated from the use of agrochemical, both chemical fertilizer and pesticides. As the largest water user sector, agricultural activities are a source of water pollution. This study was carried out in Brantas’ upper stream along paddy fields, Karangploso Subdistrict, Malang District. The river water samples were collected along the paddy field. The samples were collected when ahead of the harvest season. During the harvest season, pesticides were not sprayed but the concentration of pesticides in the river is quite high. Because no studies have previously measured Organochlorine Pesticide levels in the river along paddy fields, this study is an important contribution to the knowledge of organochlorine contaminants present in surface water in Karang Ploso Subdistrict. The river water has a high concentration of organochlorine pesticides of 400.000 ppt, Total Dissolved Solids (TDS) of 226,8 mg/L, Biological Oxygen Demand (BOD) of 10,2 mg/L, Dissolved Oxygen (DO) of 3,8 mg/L, Chemical Oxygen Demand (COD) of 36,4 mg/L, total phosphate (PO4-) of 0,2 mg/L, nitrate (NO3-N) of 0,7 mg/L, Total Suspended Solids (TSS) of 53 mg/L, and potential of Hydrogen (pH) in lab and field of 8 and 7,08, respectively.
Implementation of Radiation Safety Utilization of Fluoroscopy Baggage Scanner at Port
Authors: Mulyati Sri , Indrati Rini , Rasyid  , Masrochah Siti , Rusyadi Luthfi , Wibowo Ardi Soesilo , Sudiyono
Published: October 2019

The effort to ensure radiation safety guarantees for officers and the general public on the use of fluoroscopy baggage scanner is used at the port passenger terminal due to using ionizing radiation. The aim to be achieved is to find out the management of the use of ionizing radiation and related radiation protection according to national and international standards. The research method in this study was an observational survey by observing, interviewing and documenting safety facilities and procedures by performing management for operating fluoroscopy baggage scanner devices at the Port. Based on the results of this study: no operational license for fluoroscopy baggage scanner, radiation workers operator didn’t certify, they don’t have personal monitoring dose, they get health monitoring but not well documented, radiation testing has not been carried out for radiation workers and passengers. Radiation exposure measurements using surveymeter detected both for passengers and radiation workers around the fluoroscopy baggage scanner device was declared safe because the radiation exposure rate detected was below 1 µSv/h (FDA), PP No. 33 of 2007, Perka Bapeten No. 7 of 2009 and Perka Bapeten No. 4 of 2013. But it can be optimized by lead glass or lead apron.
Reducing Stress Level Cases of Hypogalactia Using Electric and Massage Stimulation Models
Authors: Maula Sheyla Najwatul , Widyawati Melyana Nurul , Suryono Suryono
Published: October 2019

Postpartum stress is very likely to take place as there are fluctuations in terms of feelings, pressure, anxiety, and guilt that may result in hypogalactia without proper treatment. Hypogalactia itself is an issue breastfeeding mothers face that may stall toddlers’ growth, and hence, the future of a nation. This research aims to lower stress levels in hypogalactia cases. It employs nor pharmacological methods of electric and massage stimulation models to activate the biomechanical, psychological, and neurological systems within the body. The electric stimulation model was performed for 10 minutes in acupoints SI, ST, and SP at 0.5 watts frequency. Meanwhile, the massage stimulation was performed for 30 minutes in acupoints GB, BL, ST, CV, and ST. Samples were divided into intervention and control groups, both characteristics and difference tests were performed. Paired t-test results show that there is a significant difference (p<0.05) in stress level with the treatment using both electric and massage stimulation models. Meanwhile, the unpaired t-test results also show differences in stress levels before and after treatment for each group, but the mean difference shows a decrease of 6.249. Therefore, it can be concluded that both electric and massage stimulation models lower stress levels for hypogalactia cases.
Analysis of HIV Transmission of Commercial Sex Wokers and Their Clients with Condom Use Treatment
Authors: Sutimin  , Khabibah Siti , Munawwaroh Dita Anies , Soelistyo U R. Heri
Published: October 2019

A model of the HIV/AIDS epidemic among sex workers and their clients is discussed to study the effects of condom use in the prevention of HIV transmission. The model is addressed to determine the existence of equilibrium states, and then analyze the global stability of disease free and endemic equilibrium states. The global stability of equilibria depends on the vales of the basic reproduction ratio derived from the next generation matrix of the model. The endemic equilibrium state is globally stable when the ratio exceeds unity. The simulation results are presented to discuss the effect of condom use treatment in preventing the spread of HIV/AIDS among sex workers and their clients. The results show that the effectiveness level in using condoms in sexual intercourse corresponds to the decreasing level of the spread of HIV/AIDS. We use Maple and Matlab software to simulate the impact of condom use.
Effect of Sugar Cane Addition on Rabbit Food Quality from Restaurant and Vegetable Waste with Fermentation Technology
Authors: Hadiwidodo Mochtar , Sutrisno Endro , Prasetyo Samadikun Budi , Daisy Wijayanti Arsita , Muhammad Fadel Iqbal
Published: October 2019

This study aims to determine the effect of sugar cane drop variations on composting time of food waste and vegetable waste in terms of the C/N ratio with the addition of environmental bioactivators. This research consists of 6 variations of treatment, namely the addition of Sugar Cane Drops of 0 ml, 20 ml, 40 ml, 60 ml, 80 ml and 100 ml in waste food remnants: vegetable waste of 2.5 kg: 2.5 kg with the addition of 100 grams of environmental bioactivator. Composting is carried out aerobically with a single manual stirring system every day until the compost is declared to meet the requirements of SNI 19-7030-2004. The results showed that the best results in variations of sugar cane drops 60 ml resulted in a C / N ratio of 10.79 on day 7, produced compost with nutrient content on day 7, namely C-Organic content of 33.55%, Content of N-The total is 3.11%, the total P-level is 0.161%, the total K-level is 1.357%. While the water content is 48.71%, the pH is 6.90, the temperature is 330C, it is brownish-black, smells of soil, and the particle size is ± 10 mm with volume shrinkage of 63.64%.
Liquid of Organic Fertilizer from Waste of Market Convensional System Applied on Agronomic Observation ofSetaria SplendidaStapf at Various Ages Defoliation
Authors: Hendarto Eko , Muslihudin Muslihudin
Published: October 2019

Market conventional system given organic waste can be used for liquid of organic fertilizer. The research of liquid of organic fertilizer was carried out onSetaria SplendidaStapf that defoliated at different ages. The design used is a Completely Randomized Design. The treatments given are 3 (three) mixtures of liquid of organic fertilizer with water, namely 1: 1, 1: 2 and 1: 3 (liquid of organic fertilizer: water) and defoliation age, 35, 40 and 45 days. Each combination treatment was repeated 3 times on a 1 x 2 meter plot. The agronomic parameters observed were plant height, number of tillers, number of leaves, area of canopy and weed growth. The results of the study were analyzed by means of a Completely Randomized Design, continued with a regression test. The results of the analysis show that the older defoliation age shows the agronomic aspects ofSetaria SplendidaStapf grass which are getting better while the doses of liquid of organic fertilizer are getting runny, the growth rate decreases. The best agronomic level obtained at the age of defoliation is getting older (45 days) with fertilization from liquid of organic fertilizer resulting from more concentrated waste of market conventional system (1:1).
Optimization of Organic Waste Composting in Diponegoro University with the Use ofPterocarpus indicusas Bio-activator
Authors: Muhammad Fadel Iqbal , Budihardjo Mochamad Arief
Published: October 2019

Currently, Diponegoro University has been composting dry leaves with conventional methods through a facility called TPST. Even so, the processing which have been carried out has not been able to process all the organic waste in the location. Seeing these conditions, it is necessary to look for alternatives that are better and more economical to apply. Bioactivators are used from the leaves ofPterocarpus indicuswhich serve to accelerate the composting process. The bioactivators was made by making a solution of the leaves of Pterocarpus indicus which has been mashed, then mixed with molasses and rice flour and then left for 15 days. By using experimental method, the composting process is observed. This study aims to analyze the quality of compost with applicable standards. The quality of compost is assessed by looking at the pH, temperature, and macro nutrient percentage such as C-organic, N-total, and C / N ratio. During the composting process, variations in the stirring frequency are carried out, which is once every 2 days, 4 days and 7 days. After doing laboratory test, not all reactors meet the standards for pH, temperature, C-organic, N-total, and C / N ratio according to SNI 19-7030-2004.
Physical and Antimicrobial Properties of Hydroxypropyl Starch Bio-plastics Incorporated with Nyamplung (Calophyllum inophyllum) Cake Extract as an Eco-Friendly Food Packaging
Authors: Umiyati Rini , Hidayat Chusnul , Millati Ria , Ariyanto Teguh
Published: October 2019

Nyamplung (Calophyllum inophyllum) cake as a by-product of nyamplung oil production is still limited. This research aimed to evaluate characteristics of antimicrobial bio-plastic made from hydroxypropyl starch as a basic ingredient and Nyamplung cake extract as additive. Nyamplung cake extract addition affected bio-plastic mechanical property by reduction of tensile strength but improved physical properties by reduction of vapor and oxygen permeability, water solubility, and increased elongation. This was probably due to the extract serve as natural crosslinking. Fourier Transform Infrared Spectroscopy analysis showed no difference in five bio-plastic samples, which probably caused by low concentration of extract. Thermogravimetry analysis showed the highest weight reduction in control of 95.824% and the lowest on Ext2% of 84.471%. Morphology analysis showed agglomeration of the extract on sample surface due to uneven ingredient distribution in mixture. Bio-plastic was more sensitive against gram positive bacteria than gram negative with their respective largest inhibition zone of 30 mm (Staphylococcus aureus) and 23 mm (Escherichia coli). This was probably due to the content of the extract serve as natural crosslinking and antibacterial agent.
Community Participation in Household Waste Management: An Exploratory Study in Indonesia
Authors: Santoso Anantya Novega , Farizal
Published: October 2019

The increased population and economic of the community indirectly affect the amount of household waste produced by the community. Unfortunately, this is not accompanied by good waste management from the community level. Management of household waste at the community level can be done by sorting waste. The habit of people to dispose of garbage without sorting can be a problem in implementing 3R activities (Recycling, Reducing, and Reusing). The purpose of this study is to find out what factors influence the community in sorting household waste. This research is based on the Theory of Planned Behavior (TPB) which considers several factors such as attitudes, subjective norms, and behavioral controls to influence someone to make intentions in behavior and expand the TPB conceptual model to overcome gaps. The results of this study came from a survey with 301 respondents in two locations namely DKI Jakarta and Depok. The results of this study indicate that attitudinal factors have the most significant influence on the intention and behavior of sorting garbage. While other factors such as demographics, subjective norms and perceptions of behavioral control do not have a significant effect.
Green Roof to Overcome Urban Heat Island Effects in the Center of Semarang
Authors: Luthfiyyah Dwi Nur , Widjajanti Retno
Published: October 2019

Climate change and urbanization are the main problems of the city that have caused the Urban Heat Island effect (UHI). A green roof that utilizes the building roof as a green space can overcome the UHI effects. Green roof is also an efficient solution in the procurement of green spaces in crowded cities. In 2019, Semarang City Mayor released regulation No. 24 of 2019 concerning Green Building that makes the focus of Semarang City development is to improve the urban environment. This research area is in two road corridors of Semarang City, Pandanaran and Pemuda roads. This study aims to examine the application of green roofs in these two corridors. Several identifications were carried out, first identifying building characteristics, second identifying opportunities for applying green roof, and third identifying building area capable of applying green roof. Primary data collection through field observations and satellite imagery as well as through questionnaires to the community who conduct activities in two roads corridors. The results of this study are the total roof area of 96,484m2 from 30 buildings on Pandanaran road and 23 buildings on Pemuda road that can become new green spaces to overcome Urban Heat Island effects.
Introduction Study of Tidal Flood Waste Management Cost in North Semarang Sub-District
Authors: Rahma Nandita Nur , Maryono Maryono , Widjanarko Widjanarko
Published: October 2019

Tidal flood is a disaster that threatens coastal areas due to sea-level rise and land subsidence. One of the sub-districts in the city of Semarang, which is included in the tidal flood-prone area in every years, is the North Semarang Sub-District. The area of tidal flood is 55.95 Ha and the data of estimated generation of tidal flood waste in the North Semarang Sub-District is +/- 70 tons. Lack of planning for handling waste disasters, especially for tidal flood waste, is a challenge related to environmental and economic impacts that occur at tidal flood sites. This study aims to examine the quantification of the cost of handling tidal flood waste using quantitative descriptive analysis cost accounting calculation method. The calculation is done by considering several things, namely the activity of handling waste, the need for handling waste, as well as the calculation of the cost of handling tidal flood waste. The total cost of handling tidal flood waste in North Semarang Sub-District is IDR 14,209,324,000/year or IDR 1,184,110,333/month. The results of the calculation of the overall cost are then divided by the area of the tidal flood so that the unit cost of handling waste per m2 is IDR 2,117/m2.
Broadcasting Applications of Local Wisdom Character on Coastal Environment in Communication Media
Authors: Tiani Riris , Suryadi M.
Published: October 2019

This study aims to determine the effect of television shows on people's verbal behavior. Natnography used as a research method, to find out the types of television programs that are seen by many people of all ages. Cultural studies methods also used to determine the negative impact of television broadcast content. How the influence of television shows on the style of public communication in forming the character of millennial society. In-depth interview techniques with KPID and representatives of national television stations. Based on research in the field, television shows are present for 24 hours in the family room. Culture that accepted in society that television has not become a spectacle but has become a demand. Broadcasting institutions control the formation of mental, social, and cultural. The results of this study include many Impoliteness television shows. The reality in broadcasting shows that FTV content, talk shows, and advertisements have the most verbal abuse (VA) frequencies. Form (VA) is dominated by abuse, swear, invective, and (nonVA). 60% of the broadcasting composition in the media must be educative with local wisdom, 20% national or international public broadcasting, 20% broadcast advertising content. Forms of impertinence are influenced by frequency, television cognition, and broadcast regulation.
Javanese of Tegal: an Ecological Evidence
Authors: Mualimin Mualimin , Marsono Marsono , Suhandano Suhandano
Published: October 2019

The relationship between language and environment has been a hot topic for decades. This study aims at finding out how the Javanese of Tegal dialect is used in poems written by the local poets of Tegal. The research uses Eco linguistics as well as dialect theories. The data are collected through library and interview methods. The results show that the authors of Poems in Javanese of Tegal make use of the local dialect in expressing their thoughts. The use of local dialect indicates by the use of local Javanese vocabulary and also the way the words are pronounced. The findings shows that the authors’ choice of the dialect is closely interrelated with the environment where they live.
Policy on Timber Legality Verification System for Sustainable Public Procurement and Green Products
Authors: Tuharno Tuharno , Purnaweni Hartuti , Muhammad Fuad
Published: October 2019

Forest natural resources in Indonesia are one of the contributors to the fulfilment of human life and development capital. However, the use of forest resources without regard to aspects of sustainability will cause damage and even extinction of the forest. Therefore, green products today have become stronger demands from various groups. The procurement of goods/services within the government has been implementing a Sustainable Public Procurement that fulfils 3 (three) aspects, namely, economic, social and environmental interests. This paper observes Timber Legality Verification System policies in supporting the provision of green products for the forestry sector and Sustainable Public Procurement that will support the achievement of sustainable development. Timber Legality Verification System policy guarantees the provision of wood products by wood processing industry that contributes to realizing good forest governance to combat illegal logging and illegal trade, as well as support improvement in environmental quality. One strategy in fulfilling green products and implementing a Sustainable Public Procurement is to use timber products that have been certified with timber legality. The policy for the use of certified wood products needs to be supported by the implementation rules and information on the list of green products and technical guidelines for the procurement.
Revealing Benzene, Toluene, Ethyl Benzene, Xylenes (BTEX) Emission at Gas Stations, Case Study in Semarang City
Authors: Huboyo Haryono S , Wardhana Irawan W , Resminingpuri Auliafika
Published: October 2019

Evaporation of gasoline at gas stations is the origin of air pollutants in gas station environment. This study is intended to estimate BTEX emission levels at gas stations and mapping BTEX emissions at all gas stations in Semarang. 4.09 D Tank Program with supported data collected by survey and secondary data used to calculate the estimated emissions. We also measured BTEX levels in the gas station location sample with charcoal tubes as adsorbent and PCXR4 mini pump sampler. The emissions from dispensers and storage tanks in gas stations have different emission characteristics. The amount of emissions from dispensers for VOC pollutants is 3.9261 tons/year and benzene is 0.0561 tons/year (case study UNDIP gas station). While the emission from a storage tank for VOC pollutants was 232.91 tons/year, benzene was 1.79 tons/year, toluene was 33.36 tons/year, ethylbenzene was 0.39 tons/year, and xylene was 1.43 Tons/year. The estimation results of the model with the results of direct BTEX measurements in the field showed that the field measurement results were smaller than those estimated. Some assumptions used in the calculations contribute to estimating uncertainty. The measured BTEX concentration still meets the quality standard (Minister of Manpower and Transmigration Regulation No. 13 of 2011).
The Development of Energy Tourism Village in Indonesia: a Case Study in Nusa Penida
Authors: Darmana Tasdik , Koerniawan Tony
Published: October 2019

The potential for renewable energy in Nusa Penida and the surrounding islands such as solar power plant, wind power plants, Biofuel power plant and Sea-Current power plant as a source of power plant for Bali Island can be integrated with another tourism potential as marine tourism, culinary tour, cultural and religious tourism. The combination of various types of tourism will be more complete if added to tourism knowledge of renewable energy in one location on the Island of Nusa Penida. Using a qualitative approach in the form of a case study and a survey on the island of Nusa Penida and doing interviews with the community and government officials in the Regency of Klungkung, Nusa Penida has the potential to be developed into an integrated tourism area renewable energy field in Indonesia.
Design and Analysis of Technical Economics of Off-grid Systems Solar Power Plant Using Homer at Cemara Island, Brebes Regency
Authors: Windarta Jaka , Denis  , Nugroho Agung , Bagaskoro Bimo
Published: October 2019

Cemara Island is a coastal tourism area that has not been electrified and this problem becomes an obstacle for local residents to use electrical energy services. The impact of the absence of facilities in the form of electrical installations is that coastal tourism activities are not optimal. These Photovoltaic technologies may convert solar energy into electrical energy through photovoltaic effects. For this reason, The Solar power plant can be the solution to the problems in Cemara Island. However, technical and economic analysis is needed. From the result of solar system design calculation, it was obtained the number of solar panel capacity is 8x150Wp, solar charge controller of 40A, 4 units of battery with 100Ah specifications, and 2000W of the inverter. By using Homer, it can be seen that the amount of power produced by solar panels is 1746kWh/year. With an initial investment of $3745, in the scenario of using interest at 6%, the net present cost is $6534, the cost of energy value is $1,06/kWh, and BEP occurring at 11th year. Then in the scenario without using interest, the net present cost value is $8848, the value of cost of energy is $0.755/kWh and BEP occurring at 25th year.
A Simple Homemade Electrospinning for Nanoscale Fibres Production
Authors: Umiati Ngurah Ayu Ketut , Kadarisman V.G.S. , Subagio Agus , Wandono Kunto
Published: October 2019

A high technology often is required by electrospinning device to produce a nanoscale fibre. This requirement results in difficulties to get the device simple design and operate with reasonable price. This paper presents the work to implement design of the electrospinning system. This electrospinning system consists of a main construction body, an electrical power supply to provide a voltage source direct current form, a syringe pump and a flat collector. The main body are made of acrylic with knockdown construction since acrylic is an easy material to shape. The power supply has a simple main single switch with high ferite transformer to produce high dc voltage through a diode – capacitor filtering. A used medical syringe has been modified as an injection pump to spray the materials into fibre form. A simple flat metal has been reconstructed to be electrode – ground collector to receive fibre product. The test was carried out using polyaniline materials. The general parameters in the production process are resolution of the spraying rate µℓ / minute and the power supply provide electricity in kiloVolt. The result of fibre production observed by using SEM shows that the electrospinning device successfully produces fibres on a nanometer scale.
Simulation of 20 kV Biomass Power Plant Interconnection System
Authors: Senen Adri , Pujotomo Isworo , Simamora Yoakim
Published: October 2019

The need for new plants is needed to balance the demand for high electricity. To anticipate this, it is necessary to accelerate the achievement of the level of utilization of new and renewable energy (EBT) in the energy mix for electricity supply by encouraging the use of energy from water, biomass, solar, wind to electricity. The Biomass Power Plant (PLTBm) is one of the environmentally friendly alternative power plants that produce electricity and heat by burning biomass in boilers in this case from wood waste from furniture and old rubber trees. The Interconnection System will be implemented in this PLTBm, where interconnection with the existing 20 kV system will be carried out. Research carried out includes power flow, voltage drop, losses, and short circuit. By conducting this study, it can be seen the profile of the overall system operation before and after this interconnection. The simulation results show that the PLTBm connected to the nearest feeder point from the generator is the best choice in terms of making the system voltage better between 19.1 kV and 20.17 kV. Power losses range from 439 kW and 5005.4 Kvar as well as short circuit currents, namely 13.73 KA.
Geothermal Systems Characteristics in Pesanggrahan Area, Bawang Distric, Batang Regency, Based on Geology and Geochemistry Analysis
Authors: Sulistyanto Rakhmadi , Harmoko Udi , Yuliyanto Gatot
Published: October 2019

Research conducted at Pesanggrahan area, Sangubanyu Village, Bawang District, Batang Regency with geographical coordinates at 7°5'00 "00 S - 7°7'30" 00 S, and 109 ° 56'00 "E-109°58'30"E, with an area of around 25 Km². Research methods used quantitative and qualitative methods with descriptive analysis, geological and geochemical analysis. Geochemical fluid samples were taken in manifestations hot springs Pesanggrahan and hot water samples in Sibanteng and Sileri Crater to determine the relationship with geothermal systems in this area. Geomorphology divided into two geomorphology units, they are steep slope and sloping hill. Stratigraphy can be divided into three lithologies, which are andesite breccia, tuff breccia, and tuff sandstone. Based on fluid geochemical characteristics of manifestations, it can be interpreted that hot spring of Pesanggrahan area is outflow zone with bicarbonate-chloride water type, Sibanteng Crater and Sileri Crater, include upflow zone with water type sulfate for Sibanteng Crater, bicarbonate-sulfide water type for Sileri Crater. Environmental source geothermal fluid Pesanggrahan from the magmatic volcanic process. Sources geothermal fluid in Pesanggrahan, Sibanteng and Sileri Crater from meteoric water. Estimated temperature Pesanggrahan in the interval 50-100°C, Sileri Craters 160-180°C, and Sibanteng Craters 140-150°C. The Conceptual model of Pesanggrahan includes a geothermal system that associated with volcanic system and high relief liquid dominated system.
Single Phase AC Current Controller by Using Hysteresis Method
Authors: Zulkhairi  , Facta Mochammad , Andromeda Trias , Hermawan  , Setiawan Iwan
Published: October 2019

Generally, the electrical power supply acts as a voltage source only but many applications, current sources are needed. In conventional methods, to provide a current source, an electric power supply with variable voltage is adjusted to give the amount of current. In some electrical applications and devices, there is a demand to have a constant voltage with a variable current. This paper proposes a single phase alternating current controller as a power supply with a current source that can be adjusted using the hysteresis method. The advantage of the hysteresis method is that the electric current can follow changes in setting values and have a good response to any changes in the load given. This method, the actual current can follow the reference flow as needed. During testing, the inverter has succeeded in producing 3 Ampere 50 Hz at the output voltage of 50 Volt which is sent to the load. In applications, the proposed power supply is useful as an inverter to convert DC current into AC current. Furthermore, this proposed inverter has the opportunity as a renewable energy resource converter to convert direct current from photovoltaic to alternating current for various electronic devices in industries and households.
Pore Type and Porosity Distribution of Carbonate Reservoir Based on 3D Seismic Inversion in “P” Field Salawati Basin
Authors: Prananda Avishena , Rosid Mohammad Syamsu , Widodo Robet Wahyu
Published: October 2019

Overall, carbonate rock has complex and more heterogeneous physical characteristic, compared to siliciclastic sedimentary rock. One parameter, which distinguishes carbonate rock and siliciclastic is pore structure/pore type. The heterogeneity and complexity of carbonate reservoir pore type are affected by the sedimentation process and the diagenesis process. Pore type classification is divided into three: interparticle, stiff, and crack. Therefore, carbonate pore type determination becomes important to enhance drilling success. This paper explains pore types prediction, porosity, and acoustic impedance on carbonate reservoir. The Differential Effective Medium (DEM) method to analyze carbonate reservoir pore type has been applied. DEM method generates bulk and shear modulus parameters to create carbonate Vp and Vs model based on pore type. We also do a 3D seismic inversion to create acoustic impedance distribution, porosity, and pore type. Afterward, we made cube porosity and pore type cube by using geostatistics method to provide a better result. Moreover, this study shows low impedance value correlates with high porosity value and enhancement of porosity value correlates with crack and interparticle pore type on “P” field, Salawati Basin.
Analysis of TB-DM Collaboration Program at the Hospital in Semarang City, Indonesia
Authors: Sulistiyani  , Widjanarko Bagoes , Ginandjar Praba , Nugroho K. Heri , Kristini Tri Dewi , Rianto Sugeng , Handayani Novia
Published: October 2019

Indonesia contributes to 45% of TB cases in the world. Currently, Diabetes mellitus (DM) case is increasing. DM may worsen TB. The risk of developing latent into active TB increases with the presence of DM. Treatment failure in TB patients with DM is more frequent than non-DM. The aim of this study was to analyze of TB DM collaboration program at the one hospital in Semarang City. This was a qualitative study with content analysis. Informants consisted of internists, nurses, patients. This study showed there was a gap between technical guidance from minister of health and implementation of DM screening from TB patient. Besides, human resources factors also contribute to that gap.
Analysis of Heat Pressure with Systolic-Diastolic Blood Pressure and Fatigue in Karak Industrial Workers Gadingan Sukoharjo
Authors: Rinawati Seviana , Utari Siti , Rachmawati Siti , Suryadi Iwan
Published: October 2019

The Karak industry is a food processing industry that has the potential danger of heat stress. Heat pressure can cause workers to experience health problems, especially if peripheral blood vessel dilatation causes circulatory disorders and can also cause fatigue. The aim of this study to analyze the heat pressure with blood pressure and fatigue in Karak industrial worker. This type of research is observational analytic, cross-sectional design with purposive sampling consist of 106 respondents. Test statistical data of research with Spearman Correlation. The Karak industry workplace has a WetBulb Globe Temperature (WBGT) 34oC in 8 hours/day with mild workloads. The significance of the relationship between heat pressure and systolic-diastolic blood pressure about p = 0.034 and p = 0.031; the value of r = -0,338 and r = -0,358 which means the strength of the correlation is weak. And the significance of heat pressure with fatigue is p-value = 0.039 and r = -0.581 (the strength of the medium correlation). There was a correlation between heat pressure and systolic-diastolic blood pressure and fatigue in Karak industrial workers Gadingan Sukoharjo.
Optimization of MSCT Tracking Images on Ureters against Noise Assessment with ASIR Variations
Authors: Sulaksono Nanang , Ardiyanto Jeffri , Candra Vederica Farida
Published: October 2019

MSCT is one of the modalities to diagnose kidney function. Urinary tract examination or by using tracking reconstruction without using positive contrast media is able to produce urinary tract images and use tracking able to identify urinary tract images with urolithiasis. The need for an appropriate ASIR setting value in the MSCT plane parameters, To prove differences in image quality and identify which ASIR is best for MSCT too knowing the optimal image between using tracking and CT Urography examination using contrast. This experimental study with the PostTest Only Group Design study design, the number of samples used was 5 groups. The results of MSCT image showed that there was a significant difference in the value of < 0,001 (p <0.05) with the mean value for each ASIR as follows 20 mean value 3.40, ASIR 40 mean value 7.90, ASIR 60 mean value 12.70, ASIR 80 mean value 18.00, ASIR 100 mean value 23.00. The results of the MSCT urinary tract analysis after the ASIR test showed that there were significant differences between ASIR. Conclusion optimal image results using tracking by The mean value is ASIR 100 the rank of 23.00 and CT Urography using positive contrast media of 8.00.
Analysis of Work Capacity and Chromium Exposure on Lung Function Capacity in Metal Coating Worker
Authors: Wahyuni Ida , Setyaningsih Yuliani , Ekawati
Published: October 2019

Chromium commonly used as an anti-corrosive agent for electroplating. Clinical and laboratory evidence showed that inhaled chromium was very toxic. Talang, Tegal have several groups of metal coating workers. As an informal sector, they have no law enforcement and also health services. The workplaces have poor hygiene sanitation, poor workplace arrangement and they tend to ignore the usage of personal protective equipment. This research aimed to analyze the work capacity and chromium exposure on lung function capacity in metal coating workers. The study population was all metal coating workers in the Talang sub-district. While the subject of this study was purposively taken, they were consists of 35 workers that in productive age workers and do active metal coatings work. The independent variables of this study were exposure to chromium and work capacity. Dependent variable was lung function capacity. The parameters observed to find out lung function with spirometry examination. The Chi-square test were used in this research. The results showed that the levels of chromium in urine in workers averaged 21.16 µg/L. There was no relationship between age, length of work, and levels of chromium in urine with lung function capacity. Nutritional status has a relationship with lung function capacity.
Implementation of C4.5 Algorithm and Forward Chaining Method for Higher Education Performance Analysis
Authors: Idris Mochamad , Mustafid  , Suseno Jatmiko Endro
Published: October 2019

Higher education has an important role to develop human resources in the economic growth and development of the country. One of specific way of evaluating and analyze data in education is to use data mining techniques. C4.5 algorithm as one of the data mining techniques that have good performance is very relevant used for data analysis tools. In this research using data on the performance of lecturers in college, there are 100 records with a 6 variable that affects individual factors in the productivity of lecturers including age, employment, attendance, certification, position, Education, and additional duties. In the end of the mining result, the forward chaining method is used to extract the rules that are generated by C4.5 algorithm. The input premises are examined by forwarding chaining to generate the prediction result.
The Effect of Socialization, Sanction, and E-Filing on Annual SPT Reporting
Authors: Simpen I Nyoman , Abdi Muhammad Nur , Fahlevi Mochammad , Noviantoro Rinto , Muhtar
Published: October 2019

Understanding to fill the tax return, annual report tax return individual is still lacking, many taxpayers did not understand how to fill out an annual tax return, especially the tax year 2014. The objective was to investigate the influence of socialization Tax, Tax Penalties and Tax e-filing of the tax return reporting annual individual taxpayer. Sampling was done by purposive sampling method and selection of non-random manner convenience. The primary data collection method used is survey method using a questionnaire. Data were analyzed using multiple linear analysis, descriptive analysis and to test hypotheses.
Preventing Human Error on Online Transaction (A Case Study of B.com)
Authors: Susanto Novie , Prastawa Heru , Loventa Zodiake , Lufti Muhammad , Pandan Felix
Published: October 2019

Buying and selling transactions using internet media has advantages related to time and costs. However, buyers often feel difficult when accessing online websites. There are several types of errors that are experienced by buyers when using online buying and selling site services. It is including mistakes in selecting display menus, difficulties in finding items needed because there are too many choices available, errors in interpreting menus used, and sometimes difficulties in knowing product specifications because no relevant information is available on the site. In this study, we discuss the application of the HTA and SHERPA method to assess one of the online buying and selling sites currently used by Indonesian people, namely B.com. There are 100 respondents participated in this study. The study methods are including error identification, analyzing the error using SHERPA, and evaluating the website design. The result of the study provides some recommendation to the online buyer such as ensuring the quality of internet network, filling the data carefully, and confirming the purpose and nominal value of the transaction before it sent to the seller.
Bibliometric Analysis of Publications in the Scopus Database: A Study at Diponegoro University during 2014-2018
Authors: Utama Yos Johan , Setiyono Budi , Jamari  , Tauviqirrahman Mohammad , Susanto Heru
Published: October 2019

This paper presents the strategy of Diponegoro University to increase its research productivity towards the world-class university. Bibliometric indicators are employed to characterize the research activities of Diponegoro University, Indonesia with production in the period of 2014-2018 in publications that are indexed in the Scopus database. The number of documents and their comparison with other universities, and productive authors are of particular interest. The results reflect that the university documents improve significantly during the research time frame. In comparison with other top ten universities in Indonesia, for the last five years, Diponegoro University has achieved the fastest rate of publication (up to 471%). However, compared to other universities in neighboring countries, Diponegoro University is still left behind. In addition, it is shown that prolific authors contributing to documents in Scopus are uneven in terms of origin of faculty. Based on these results, a recommendation with respect to the research productivity is discussed in this paper.
Design of Indoor Room Gas CO and SO2 Detection Based on Microcontroller Using Fuzzy Logic
Authors: Widodo Slamet , Amin M.Miftakhul , Supani Ahyar
Published: October 2019

The incidence of poisoning due to carbon monoxide gas arising from drilling activities on the first floor of a building in the Kelapa Gading beauty clinic in Jakarta resulted in 17 people experiencing poisoning. In this study developing a device on the sensor used to detect CO and SO2 gas, in the air of a closed room using gas sensor MQ 135 and MQ 136. The results of testing the CO and SO2 gas gauges using samples of cigarette smoke and sulfur powder using MQ 135 and MQ 136 sensors with fuzzy rule base logic for motor speed to produce CO and SO2 gas, that obtained a value of 0.233 ppm SO2 gas safe conditions and gas input CO with the sensor obtained a value of 0.513 ppm, the condition is safe so that the output is 49.8 ppm, the condition of the fan blower does not rotate. Whereas when the reading value of 5.0 ppm is very concentrated and the CO gas input with the sensor is 13.8 ppm the condition is very concentrated producing an output of 228 ppm the very danger.
Forecasting of Rainfall in Central Java using Hybrid GSTAR-NN-PSO Model
Authors: Yasin Hasbi , Warsito Budi , Santoso Rukun , Hakim Arief Rachman
Published: October 2019

Forecasting of rainfall trends is essential for several fields, such as airline and ship management, flood control and agriculture. The rainfall data were recorded several time simultaneously at a number of locations and called the space-time data. Generalized Space Time Autoregressive (GSTAR) model is one of space-time models used to modeling and forecasting the rainfall. The aim of this research is to propose the nonlinear space-time model based on hybrid of GSTAR, Feed Forward Neural Network (FFNN) and Particle Swarm Optimization (PSO) and it called GSTAR-NN-PSO. In this model, input variable of the FFNN was obtained from the GSTAR model. Then use PSO to initialize the weight parameter in the FFNN model. This model is applied for forecasting monthly rainfall data in Jepara, Kudus, Pati and Grobogan, Central Java, Indonesia. The results show that the proposed model gives more accurate forecast than the linear space-time model, i.e. GSTAR and GSTAR-PSO. Moreover, further research about space-time models based on GSTAR and Neural Network is needed to improving the forecast accuracy especially the weight matrix in the GSTAR model.
Digital Forensic InnoDB Database Engine for Employee Performance Appraisal Application
Authors: Kristiyanto Daniel Yeri , Suhartono Bambang , Wibowo Agus
Published: October 2019

Data is something that can be manipulated by irresponsible people and causing fraud. The use of log files, data theft, unauthorized person, and infiltration are things that should be prevented before the problem occurs. The authenticity of application data that evaluates the performance of company employees is very crucial. This paper will explain how to maintain the company’s big data as a valid standard service to assess employee performance database, based on employee performance of MariaDB or MySQL 5.0.11 with InnoDB storage engine. The authenticity of data is required for decent digital evidence when sabotage occurs. Digital forensic analysis carried out serves to reveal past activities, record time and be able to recover deleted data in the InnoDB storage engine table. A comprehensive examination is carried out by looking at the internal and external aspects of the Relational Database Management System (RDBMS). The result of this research is in the form of forensic tables in the InnoDB engine before and after sabotage occurs.
Abklärung Monarthritis – Schritt für Schritt
Authors: Ehrenstein Boris
Published: October 2019

The work-up of acute monoarthritis is challenging due to the abundance of differential diagnoses. In addition to a bacterial septic arthritis, which can, if not treated promptly, cause rapid irreversible joint damage, many diseases have to be considered: inflammatory rheumatic diseases, activated osteoarthritis, other infectious arthritis, cristal induced arthritis, and rare tumorous diseases. In cases with high urgency, and/or when medical history, physical examination and laboratory parameters remain without a specific etiologic clue, septic arthritis has to be excluded by immediate diagnostic joint aspiration. In many patients the cause of monoarthritis can already be determined by ordering a leucocyte count of the synovial fluid sample, a microscopy for crystals, and gram staining and culture for bacterial pathogens.