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JOURNAL OF APPLIED SCIENCE (JAPPS)
Published by Institut Teknologi Sains Bandung
ISSN : 26567288     EISSN : 26567334     DOI : https://doi.org/10.36870/japps
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Journal of Applied Science (JAPPS) is a collection of scientific articles relating to the field of applied science which includes engineering and design. This journal discusses the scientific development of engineering in the fields of civil engineering, mining engineering, metallurgical and material engineering, petroleum engineering, and engineering in other fields. In addition, it also contains scientific articles in the field of planning such as urban and regional planning and Architecture which is balanced with design in the fields of Product and Interior Design. In the process, this journal involves the reviewer with a minimum doctoral qualification from domestic and foreign universities affilitations. In addition, it also involves observers from industry and the government with appropriate qualifications in the field of review. JAPPS will be published twice a year, in February and August with different topics for each volume. In its future development, JAPPS will be published in two versions: Indonesian and English.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 55 Documents
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Penerapan Analitycal Hierarchy Process (Ahp) dalam Menentukan Lokasi Pabrik Tempe Cahyaning Kilang Permatasari
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 2, No 2 (2020): Journal of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v2i2.182

Abstract

Nowadays, tempe household industry entrepreneurs must choose the right factory location. Location is very influential for develop of a company, besides it can minimize problems in the future. The purpose of this study was to determine the percentage of priority criteria in selecting factory locations. The results of the calculation of priority criteria, it is hoped that entrepreneurs will find it easier to determine a suitable location to build a tempe factory. This research was conducted in Karanganyar Regency. The method used to determine the priority criteria for selecting the tempe factory location is Analytical Hierarchy Process (AHP) method. After through the process of obtaining data and analyzing calculations using Microsoft Excel, the percentage result of the criteria are geological and climatic conditions (34.67%), availability of labor (26.94%), market and marketing distance (14.93%), transportation facilities (11.36%), supporting facilities and utilities (7.08%) and distance to the location of raw material suppliers (5.02%). This criterion combines several aspects based on the level of importance, so that the results of the order in selecting the location of the tempe factory will be more objective
Study of Park and Ride Facilities in Cikarang Annisa Annisa; Leonardus Bambang Budi Prasetyo
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 3, No 1 (2021): Journal of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v3i1.205

Abstract

The enormous number of Cawang-Cikarang toll road private vehicles users have caused congestion in Jakarta. To reduce congestion in Jakarta, suburban areas, such as Cikarang, commuters shall utilize Park and Ride (P&R) facilities than use private vehicle to Jakarta. This study is important to give the commuters information of P&R in Cikarang, so they can make an option of their trip. P&R facility has a main function as a hub to change from private vehicle to public transportation. Observation as well as questionnaire were used to reveal findings for this study, the data results are analyzed with descriptive statistics. This study revealed that users of P&R facilities from Cikarang are generally commuters who have offices in urban areas and reside in suburban areas. The problem that occurs in Cikarang is that parking facilities in transit locations (stations / terminals / stops) have not been utilized optimally. This study aims to analyze the actual state and user satisfaction of P&R facility in Cikarang. The six locations include: (1) Cikarang Station; (2) Metland Telaga Murni Station; (3) Lemahabang Station; (4) Cikarang Terminal; (5) Capitol Stop; and (6) AO Citywalk Lippo Cikarang Bus Stop. The results showed that the majority of respondents (N=231) were satisfied (m=3.78; SD=0.99, p
Evaluasi Sertifikasi Green Building pada Gedung Institut Teknologi & Sains Bandung Siti Mega Rosalia; Annisa Annisa; Siswanti Zuraida
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 2, No 2 (2020): Journal of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v2i2.183

Abstract

Global warming is one of the world’s prominent issue that related to the environment. As a support to reduce the causes of global warming, Institut Teknologi dan Sains Bandung (ITSB) has applied a concept of green building and got the greenship building’s certificate since 2013 2016 with the result score was 64 points or gold category of Green Building of Council Indonesia (GBCI). This study aims at evaluating the existing building of ITSB for knowing the new result score of greenship building’s certification. This results score can be a simple directive for ITSB to do the new certification. The collecting data that used were partisipative observation, interview, and quisionnaire as the primary data and literature as the secondary data. The evaluative-descriptive qualitative methods was used to analyze data. The evaluating of Greeship Existing Buildings using an assessment from GBCI with 6 parameters, those parameters are Approprite Site Developent (ASD), Energy Efficiency and Conservation (EEC), Water Conservation (WAC), Material Resource and Cycle (MRC), Indoor Health and Comfort (IHC) , and Building Environmental Management (BEM). The result of this research show that the accumulation of the scores of 6 parameters were 47 points, it means that ITSB could receive the bronze category on Greenship Existing Building.
Pengaruh Peletakan Komposisi Warna Monochrome pada Bidang Window Display Terhadap Ketertarikan Pengunjung Arsaika Widasati
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 3, No 1 (2021): Journal of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v3i1.199

Abstract

Window display is used to display products, provide information, attract visitors’ attention then persuade visitors to approach and enter the store. Colour composition is the most attractive design element on window display to visitors’ attention the most. This element is the easiest to identified by visitors. Monochromatic colour composition consists of one colour (hue) in various variants of its value and saturation. It is stated as an attractive and effective composition, thus it is widely used in window display spatial elements. This experiment investigated what kind of monochrome compositions that should be applied in window display that attract visitor the most. Window display schematic simulations with monochrome compositions are used as the stimulus of this research. The research subjects observed the simulation while filled out a set of online questionnaires. Results obtained from experiments prove that the monochrome schematic illustration which use a dark color (value 100) on the back wall and on the floor has the highest attractiveness to the visitors among other types of monochrome compositions.
Simulasi Pemodelan Numerik Hidrodinamika dan Aliran Sedimen pada Bendung PLTA Musi – Bengkulu Asep Irwan; Dimas Setiya Gunawan; Martin Wahyunus; Hadi Mulyanto
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 2, No 2 (2020): Journal of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v2i2.179

Abstract

This research aims to identify Hydro-Power Plant (PLTA) sedimentation in Musi-River, Bengkulu, Indonesia. Based on field observation and simulation modeling Surface Modeling System 8.01. High sediment levels cause accumulation of reservoirs and loss of direct storage, which in turn causes loss of production potential for the Musi Hydro-Power Plant, Bengkulu. The data used in this modeling are bathymetry, current velocity of measurement results, water level, and grain size of sediment. Based on field observations, it was found that basic sediment types were dominated by silt and sand. The highest elevated sediment content values of 0.166 gr/l, current velocity in the upstream was 0.54 - 0.61 m/s while the middle section was 0.43 m/s. After the hydrodynamic model is carried out, then the sedimentation model has values that vary throughout the area model, this is influenced by several factors, one of which is the current movement that can affect the amount of water bottom friction. Volume of sediments obtained in the weirs at the PLTA Musi is 211,588 m3 during the simulation of 1 month if multiplied in 1 year, then it obtained 2539,056 m3. From the results of this research, PLTA Musi must prevent this sedimentation bymaking sediment traps in the upstream.
Analisis Perbandingan Kehilangan Prategang Akibat Variasi Letak Tendon PC I Girder Jembatan Beton Prategang Ibham Yamin; Siswanti Zuraida; Ilham Ilham
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 2, No 2 (2020): Journal of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v2i2.184

Abstract

Prestressed force loss always occurs in prestressed concrete (loss prestressed). The most common form used in pre-tensile beams is straight tendons and for post-tensile beams are curved tendons. In planning a prestressed concrete bridge structure, the loss of prestressed force must be considered, because the stress on the prestressed concrete tendon decreases continuously over time. The number of factors that are interrelated, for the effectiveness of the design, location of tendons along the spans need to be considered, so that the tensile strength that occurs in the extreme fiber beam is limited or none at all in the cross section. This final project will examine the shape of the PC beam I Girder with 4 tendon setting conditions namely straight tendon cable which is on the neutral axis so that the eccentricity = 0 (condition1), straight tendon cable which is at 1/6 h so that the eccentricity ≠ 0 (condition 2), tendon cable with draped / parabolic shape (condition 3), and tendon condition with harped shape (condition 4). The biggest prestressed loss results were PC I Girder (condition 2) = 395.81 MPa (26.07%), while the smallest prestressed loss is PC I Girder (condition3) = 367.44 MPa (24.2%). Condition 1 and 2 in girder is not suitable for use because it exceeds the value of the allowable stress at the limit of prestressed and deflection permits on girder are safe for each condition.
Hydroxyapatite synthesize from Pugilina cochlidium and Babylonia spirata, L shells as bone graft materials candidates in periodontics Aini Hariyani Nasution; Rini Octavia Nasution; Desy Marlyn Situmorang; Andrie Harmaji
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 3, No 1 (2021): Journal of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v3i1.200

Abstract

Hydroxyapatite has been widely used as bone graft materials in periodontics. However, hydroxyapatite is still considered costly, and many of them are imported. Hydroxyapatite manufacturers from natural sources could be an affordable alternative for periodontal regeneration therapy. Pugilina cochlidium and Babylonia spirata, L are the natural sources with high calcium carbonate. The two clamshells are easily found in Indonesia but their usage is still limited as hydroxyapatite materials. This study aims to synthesize the hydroxyapatite with sol-gel method from Pugilina cochlidium and Babylonia spirata, L as bone graft materials candidates.
Eksplorasi Material Semen untuk Pengembangan Produk Elemen Estetik I Ketut Suarna
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 2, No 2 (2020): Journal of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v2i2.180

Abstract

Cement is a unique material, initially as the base material with the mainfunction as an adhesive for other materials whose existence is always covered. Nowdays, the application of cement materials in interior elements appears to be more honest. Natural ash color and cement characteristics are interesting things to be exposed. The use of cement material has also grown not only limited to the elements that make up space (floors, walls and ceilings), but has stepped into space facilities (furniture) and aesthetic elements. Through a series of experiments with the "design by doing" method, experiments were carried out by giving chemical treatments such as foam agents, adding magnesium carbonate powder and adding magnesium oxide to the base materials (cement, cement + sand) to explore and discover various potentials, uniqueness, peculiarities and lighter feature as new ideas in aesthetic elements product development in interior design. The results obtained from a series of experiments showed differences in the cement concrete characteristics through its texture, shape, number and size of pores and difference in weight .
Analysis Of Risk Management In Development SMK Stikes Rajawali Bandung (Case Study: Well Foundation) Firda Aulia Khairin; Annisa Annisa
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 3, No 1 (2021): Journal of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v3i1.201

Abstract

The SMK STIKES Rajawali Bandung project is a unique project because it has a steep terrain location that creates various risks, so a risk analysis is needed. The identification in this study was 32 risks. This research uses qualitative and quantitative methods with the stages of identifying possible risks, assessing risks, knowing the causes, and ways of dealing with dominant risks if they occur. The results of the study of the 32 risks consisted of 3 very high risks, 2 high risks, 23 medium risks and 4 low risks. The biggest risk comes from the external risk that can be detected, namely the risk of rain with a score of 20. Therefore, the risk of rain requires ideal treatment using a dewatering pump.
Pengembangan Model Gas Conditioning Unit dalam Sistem Seal Gas di Kompresor Sentrifugal: Studi Kasus Kerusakan Dry Gas Seal Riswan Adhitya Saputra
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 3, No 1 (2021): Journal of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v3i1.195

Abstract

Dry gas seal is an important component in the sealing system in centrifugal compressors. The gas seal supply that enters the dry gas seal must meet the specifications that have been determined based on API 692. However, on reality at the site dry gas seal damage often occurs, one of which is due to contamination from the gas seal supply that will enter the dry gas seal. The sulfur contamination in the corrosive process gas reduces the life and reliability of the dry gas seal. In addition, the selection of a gas conditioning unit model that is not quite right will result in the gas seal supply quality beyond the predetermined specifications. In this study, to obtain a good quality gas seal supply, development was carried out in the existing gas conditioning unit, upgrade seal gas strainer design using the duplex type and changing the type of strainer, changing the size of the gas filter seal from 0.3 micron to 0.1 micron and the use of coalescing. filter, repair seal gas heater and heat tracing installation on the seal gas piping, and finally replacement of seal gas booster components. The research method used is the study of literature from various references and previous studies, collecting data in the field and analyzing the findings using the PROACT method. From the analysis, it can be concluded that the development of the gas conditioning unit model in the gas seal system has a positive impact on the reliability of the dry gas seal in this centrifugal compressor.

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