bluuebunny/crossref_metadata_2025_split huggingface dataset:
Operational limitation of Indonesian traditional wooden boat in the framework of second generation intact stability criteria
Authors: Paroka D , Muhammad A H , Rahman S , Azis M A 
Published: February 2021

Abstract
Recently, the International Maritime Organization (IMO) developed the second generation intact stability criteria for all possible capsizing scenario in seaways with performance based approach. This paper presents application of the criteria to investgate operational limitation of an Indonesian traditional woooden boat for dead ship condition. The hydrodynamic characteristics of the ship are determined by model experiment except the effective wave slope coefficient is calculated using the simplified Froude-Krylov assumption of roll exciting moment and the formula of weather criterion. The wave characteristics are described by JONSWAP spectrum based on the wave statistic of Flores sea and the gusty wind is calculated by Davenport spectrum. The results show that the Indonesian traditional wooden boat comply with the criteria when the downflooding angle is larger than 25.0 degrees. The vulnerability criteria level 1 and the vulnerability criteria level 2 of the criteria are not consistent when the effective wave slope coefficient is calculated using the formula of weather criterion but it is consistent when the simplified Froude-Krylov assumption is used. The inconsistency could appear due to the geometry characteristics of Indonesian traditional wooden boats which are different from the geometry characteristics of ships used to develop the weather criterion as the level 1 of vulnerability criteria.
Search and rescue station location selection and conceptual design: a case study of western region of Indonesia
Authors: Hadi F , Nur H I , Maharani N K P , Permana C B S , Buana I G N S , Ardhi E W 
Published: February 2021

Abstract
The existence of marine Search and Rescue Units (SRU) to support the search and rescue operations currently are not supported by sufficient infrastructures and facilities. The infrastructures and facilities operated by the National Search and Rescue Agency (NSARA) have not been able to cover all working areas. One example is the location of NSARA dock facilities which is in remote area and has a narrow access channel causes duration to get to the area of accident is quite long. In that condition, the coordination among the SAR vessels and crew cannot perform efficiently and effectively. On the other hand, the National SAR Agency regulation No. 14, the year 2015, describes the necessary infrastructures and facilities that must be provided to support the implementation of marine SAR operations. This paper uses Western Region of Indonesia as a case study aiming to determine the optimum location and conceptual design of SAR station. Set Covering Problem method used to determine SAR station location and SAR vessels required, whereas conceptual design of the infrastructures is established based on data of routes and location selected. From the set covering model, we found 10 locations of SAR station, namely Aceh, South Kalimantan, Bengkulu, South Sumatra Bangka Belitung, Riau, West Kalimantan, Central Java, Riau Islands, and Yogyakarta. There is a total of 20 units of ships deploy with the total operation cost of IDR 263 billion/year (USD 18.5 million/year). The minimum dimensions of the berth have a length of 15 m and a width 5 m, while the gangway has a length of 163 m and a width of 5 m. The total cost of SAR station is IDR 8 billion/year (USD 562,390/year).
Exploring Architectural Style of Gianyar and Creating Building Material Innovations
Authors: Wirawibawa Ida Bagus Gede , Dewa Gede Agung Diasana Putra I 
Published: February 2021

Abstract
Traditional architectural styles are essential for presenting local identity, so that it is necessary to recognize and explore local architectural identities in an attempt to maintain traditional architectural styles as one of the richness of local culture. Generally, the traditional Balinese architecture, particularly the Gianyar architectural style, is still used by Balinese. The design’s application is also attributable to the Balinese local government legislation about using traditional Balinese architectural style in a building. However, the style’s design process is an architectural challenge for building actors and people willing to realize that the construction processes usually need more time and costly. Because of this situation, it is considered essential to producing a building material that gives a traditional impression through the efficient use of resources and funds. By introducing a phased approach, this research starts with an analysis of the Gianyar architecture, which is used as a guide in designing traditional-style materials used by the broader communities.
Heating Treatment of Air in Combustion Chamber For The Use of Mixture Ethanol and Gasoline Fuel
Authors: Ikhsani A A , Kustanto M N , Fachri B A 
Published: February 2021

Abstract
This research was conducted to improve the engine performance with ethanol and gasoline mixture, because from fuel mixture with high concentrate causes value of flash point and heat evaporation fuels becomes higher. To overcome these, the air that entrance in combustion chamber heated up to 26°C, 30°C, 40°C and 50°C, the fuel used are E0, E30 and E50 on 2000 to 8000 rotation. The result of research shows E0 fuel highest torque on 30°C with a value 8,98 Nm had 0,22% increase, E30 fuel highest torque on 50°C with a value 9,5 Nm had 1,05% increase and E50 fuel highest torque on 50°C with a value 7,77 Nm had 0,64% increase. On E0 power is 5,96 kW on 30°C had 0,33% increase, the highest power of E30 is 6,29 kW on 50°C had 1,9% increase and the highest power of E50 on 50°C with a value 4,49 kW had 0,89% increase. For the highest consumption is 2000 rotation, for E0 fuel on 50°C with a value 1,43Kg / Hp.Hour, E30 with a value 1,48 Kg/Hp.Hour on 26°C and E50 with a value 2,03 Kg/Hp.Hour on 26°C, this result shows that air heating treatment can improve the engine performance.
Risk Allocation Model For Cisumdawu Toll Road Projects
Authors: Setiawan D , Milyardi R , Ing T L , Rizkiana C 
Published: February 2021

Abstract
In the Cisumdawu Toll Road project there are some complex problems, including the first tunnel structure in Indonesia that functions as a toll road. This complex construction project is currently experiencing delays which creates risks for project delays. In this study the aim is to identify risks and create an optimal risk allocation model between the project owner and the contractor. The allocation of risk between project owner and contractor in a contract plays an important role for the success of the project. It should be based on a proper assessment of the involved risks and choosing the party best able to manage them. This research was obtained about risks that can be impacted by the project in each phase. The scope of non-excusable factors often is considered a contractor’s fault which results in project construction. Based on the results of descriptive test of the 5 main risks include the most important risk in the Cisumdawu Toll Road Construction Phase II (STA 9+750 – STA 27+100) is soil work. The results show that the soil work risk should bear by the contractors by lump sum fixed price contract.
Physical Stability Test Sunscreen Gel Extracts Blackberry Fruit (rubus fruticosus l.)
Authors: Gunarti N , Aisyah I , Lia F 
Published: February 2021

Abstract
Blackberry (Rubus sp.) fruit contains high levels of anthocyanins and other phenolic compounds, mainly flavonols and ellagitannins, which contribute to its high antioxidant capacity and other biological activities. Sunscreen preparations are cosmetic preparations that are used as protection to reduce the impact of sun exposure, whose formulations contain active ingredients to absorb or reduce sunlight, especially in areas exposed to ultraviolet rays and infrared waves. One of the potential natural ingredients for sunscreen is blackberry fruit (Rubus sp.). Contains flavonoid compounds that can prevent the harmful effects of UV rays. This study aims to determine the stability of the blackberry fruit extract sunscreen gel formula for 90 days of storage to determine the SPF value test results of blackberry fruit extract using UV-Visible. The research design is an experimental research conducted in a laboratory. The sample used in this study was Blackberry which was made into thick extract by maceration method. Furthermore, the thick extract obtained was made into a sunscreen gel and then tested for physical stability and the calculation of the SPF value. The sunscreen potency test is determined based on the method of calculating the percent erythema transmission value (%Te) and the percent transmission pigmentation (%Tp) as well as the Sun Protection Factor (SPF) value. On testing the SPF the average value on the test day 0, day 7, day 15, day 21, day 30, day 60, day 90, respectively 28,03±0,77; 28,28±0,16; 28,46±0,41; 28,66±0,59; 28,85±0,33; 29,04±0,11; 29.24±0,27. Percent of erythema (% Te) testing over 90 days was included in the total block category. Percent pigmentation (% Tp) testing for 90 days was included in the total block category and the SPF test for 90 days was included in the category ultra.
Formulation and Antibacterial Activity Test of Foot Spray with Beluntas Leaf Ethanol Extract (Pluchea Indica L.)
Authors: Farhamzah  , Herli A , Mursal I L P 
Published: February 2021

AbstractFoot odor is one of the things that is quite disruptive to appearance, the 2014 American Podiatric Medical Association studied a significant increase in the prevalence of foot odor in the community. One of the causes of foot odor is the presence of bacteria, especially the bacteria Bacillus Subtilis. This study used the ethanol extract of beluntas leaf (Pluchea Indica L.) as the active ingredient because the ethanol extract of beluntas leaf has been widely used and proven to have antibacterial activity besides the ethanol extract of beluntas leaf has a high enough compatibility to be used as a cosmetic product, including spray preparations. The spray form was chosen because of its easy and pleasant use. This study aims to make a foot odor control product in the form of a spray with 3 concentrations of beluntas leaf ethanol extract, 0.5%, 1.0% and 1.5% to study the antibacterial activity using the well diffusion method. The results showed that the ethanol extract of beluntas leaf can be formulated into foot spray preparation with the results of the organoleptic examination of the three formulas are clear liquid, and yellow slightly green color. The pH of the preparation is in the range 5.10 -5.92. In formula 3 (F3) with a concentration of 1.5% beluntas leaf ethanol extract, it has a strong bacterial inhibition zone with an average inhibition zone diameter of 12.5 mm.
Chemical Characteristics of Motaf Sweet bread with Addition of Temulawak Starch
Authors: Sandri D , Lestari E 
Published: February 2021

Abstract
Bread is one of the processed foods from wheat which is widely consumed by the wider community which is used as a source of carbohydrates other than rice and noodles. In some countries, bread made from wheat flour is a staple food. Along with the development of the food industry made from wheat flour, the need for wheat flour is also increasing. So it is necessary to do efforts to find food sources other than wheat flour. In Indonesia, there are talipuk seeds which have the potential to be developed into a future source of carbohydrates and temulawak which contains quite a lot of starch. This study aims to analyze the chemical characteristics ofsweet bread modified talipuk flour (motaf)with the addition of temulawak starch. This research was conducted using a completely randomized design method (CRD) which consisted of 5 treatments consisting of the ratio of wheat flour, motaf, and temulawak starch flour. The sweet bread of these 5 treatments was tested for moisture content, ash content, protein, fat, carbohydrate and crude fiber analysis. The data were analyzed using the effectiveness test. The results showed that the best treatment produced on sweet bread made from the addition of modified talipuk flour (motaf) and temulawak starch was treated with the addition of 0.01 g of temulawak starch flour. The resulting sweet bread has 19.96% moisture content, 1.01% ash content, 8.65% protein content, 13.62% fat content, 56.76% carbohydrate content, 35.19% fiber content and the value of effectiveness results. the highest is 0.39.
Web-based Design of Financial Apps: Case of Kosan 54
Authors: Sari D , Pradana M , Nugraha D W , Oktafani F 
Published: February 2021

Abstract
Financial Management is the process of financial planning in budgeting, auditing, management, control, deposit funds that are held for effective and efficient financial decisions.. As the existing financial management processes in boarding house number 54 (Kosan 54) is still manual, it is prone to mistakes during the recording and making their own bills and financial statements, along with the process of bill payment by the boarding members. Therefore, a system that can perform data processing in an integrated and well computerized system using a WEB-based system is urgently needed. The designed system is a WEB-based Financial Management Application. To build the application, a software such as MySQL database is needed, as well as using the PHP programming language. This finance management application then will be of great help in the planning of appropriate financial income and expenses incurred.
Decision Making Analysis for Free Internet Quota Assistance Online Learning during the Covid-19 Pandemic
Authors: Budiman E , Hairah U 
Published: February 2021

Abstract
One of the Indonesian government’s efforts to reduce the impact of the crisis due to the Covid-19 pandemic is through the distribution of social assistance through the distribution of free internet data for students to support online learning during the implementation of government policies regarding large-scale social restrictions. This social assistance involves 350 students as an alternative as a target for decision making. In an effort to support this policy, this study offers a multi-criteria decision-making analysis approach using the Moora and Vikor methods. The results of this study present the optimal performance of the accuracy, precision and error rate of the two methods.
The future has arrived, are we ready for EV?
Authors: Bose Probhas , Mandal Dipak Kumar 
Published: February 2021

Abstract
With the invention of petroleum in 1859, R & D of internal combustion (IC) engine powered vehicle commenced and the first gasoline powered automobiles hit the market of Germany in 1876. Two major problems are associated with petroleum powered automobiles; these are chemical and noise pollution. These are causing tremendous damage to the nature and its habitat. Also the petroleum reserve is fast depleting. Hence all the eyes were focused towards non-petroleum bases automobile. Automobile with alternate fuels, engine with improved efficiency were tried but keeping the health of our planet in mind, maximum thrust of research is aim to run the automobile using green energy. Solar energy, the most popular green energy, found suitable in light transport like rickshaw and three wheelers because of low energy density. EV may be the solution of future transportation system. It offers zero emission and reduces noise pollution. Cost of purchase of EV is more, though its less running cost. The technology, especially the energy storing technology is yet to be matured. Overall cost of EV will come down within affordability with the technology. EV will be popular over conventional vehicle and it appears to be the viable solution in near future.
Flattening analysis of plastically graded cylindrical contact under plane stress condition
Authors: Jana Tamonash , Mitra Anirban , Sahoo Prasanta 
Published: February 2021

AbstractThe present work deals with finite element based flattening analysis of a functionally graded cylindrical contact against a rigid flat surface under plane stress condition. The yield strength of the semi-cylinder is varied radially according to an exponential function. The contact between the semi-cylinder and the rigid flat is considered to be perfect-slip type in nature. To reduce the computational time, a 2D quarter circle is used to model the cylinder and rigid flat surface is modelled using a straight line. The effect of the gradation parameter on contact behaviours e.g. contact area, contact force, contact pressure etc. of the semi-cylinder are presented and discussed.
EXPERIMENTAL INVESTIGATION ON A DOWNDRAFT BIOMASS GASIFIER USING TREE WASTE AND SAWDUST PELLET
Authors: Dutta A. , Das Sampad Kumar , Roy P. C. 
Published: February 2021

Abstract
In this article, investigation and analysis of an experiment for downdraft biomass gasification has been conducted using two different feed stocks namely tree waste and sawdust pellet at different equivalence ratio. The different gas yield due to gasification mainly hydrogen, carbon monoxide, methane, carbon dioxide and nitrogen have been observed by the use of online gas analyser. The equivalence ratio of air has been varied from 0.3 to 0.4 for both of the biomass feedstock. On the basis of producer gas yield, the LHV of producer gas have also been calculated for different equivalence ratio and for both of the biomass. After that the LHV has been compared between the two biomass feedstock for equivalence ratios of 0.3, 0.33 and 0.4. The trend of LHV on the basis of different equivalence ratio has been examined and plotted.
Experimental analysis of small scale water cooler equipped with TTHC heat exchanger
Authors: Kumar Rajesh , Gaurav Kumar , Chandra Prakash 
Published: February 2021

Abstract
In the present work, experiments were conducted to recover waste heat from water cooler condenser. A Tube in Tube Helical Coil (TTHC) heat exchanger was made from cu pipe of 4.47 mm outer diameter of inner tube and 8.30 mm inner diameter of outer tube replaced the water cooler condenser to recover the waste heat. A new empirical correlation was suggested to predict the annulus Nusselt number for laminar flow of water with Reynolds number ranging from 1500 to 3900 and Prandtl number approx 1.6. The results reveal that the annulus Nusselt number varies with volume flow rate through annulus of helical tube significantly in laminar flow region. The small scale water cooler equipped with TTHC heat exchanger recovered maximum 371.5 W heat by cooling water.
Thermal Model Development of a Biomass Regenerated Desiccant Supported Greenhouse Cooling for Orchid Cultivation
Authors: Mandal Chandan , Ganguly A. 
Published: February 2021

Abstract
In this paper, a novel scheme of biomass regenerated desiccant supported greenhouse cooling with distributed fan-pad evaporative system has been proposed. The system aims to provide suitable thermal condition inside the greenhouse for cultivation of high value flowers like varieties of Orchid which require a temperature between 21 °C to 26 °C and humidity from 50 to 70% for the sub-tropical climate prvailing in the plains of India. In the proposed system two stage desiccant based cooling is used to obtain a low humidity ratio. A biomass based heating system is coupled for regeneration of the desiccant. Thermal modeling of desiccant wheel and greenhouse are done to estimate air temperature inside the greenhouse. A comparative study has been made based on estimated greenhouse air temperature with the results of the reference model available in the literature. From the performance analysis of the proposed system, it is revealed that the maximum temperature of the greenhouse air can be restricted within 25 °C and 25.8 °C for a hot and humid day prevailing in the month of July and September respectively. However the system can maintain a lower temperature of 19 °C during the morning time which is more conducive for target plantation (Orchid) in the given region.
RANS studies of hydrogen-enrichment premixed turbulent flames
Authors: Muppala Siva PR , Vasudevan Sooraj Paleli M 
Published: February 2021

Abstract
In this study, we show numerical predictions of the Zimont and Peter’s turbulent flame speed models for low-swirl Methane/Air/Hydrogen flames [1]. These models are contained as default options within the ANSYS Fluent Premixed reaction model. Two distinct simulation tasks as part of the present study are – non-reacting and reacting flows, for with three different methane mixtures in compositions added with – 0, 40 and 60% hydrogen. The results show that the RANS approach provides a reasonable prediction of the cold flow conditions, whilst the reacting flow conditions, good agreement is reached up to 40% enrichment, except near the recirculation region,.
Energy harvesting applications using 3D-printed coreless generator
Authors: Herawan Safarudin Gazali , Syahputra Said Abi , Tokit Ernie Mat , Sa’at Fatimah Al-Zahra Mohd , Rosli Mohamad Afzanizam Mohd 
Published: February 2021

Abstract
3D-printed coreless generator has been presented for energy harvesting applications using permanent magnet as source of external magnetic field in the rotor. The phototype of proposed coreless generator is built using 3D-printer with Black Polylactic Acid (PLA) as a filament for stator housing, rotor and other parts. The major parts of the proposed coreless generator are the stator, which has four coils of winding copper wire and the rotor with eight permanent magnets which are arranging N and S magnet poles alternately. This research is conducted to determine how much power can be generated from the proposed 3D-printed permanent magnet generator. The prototype permanent magnet generator is tested with rotational speed and load condition. The experimental results have been shown that the coreless generator can generate the electrical energy up to 5 W at 6000 rpm.
Comparison of BLOCPLAN and CORELAP algorithm for Material Handling Improvement at M Bakery
Authors: Lufika Raihan Dara , Sentia Prima Denny , Maulana Irfan 
Published: February 2021

Abstract
It is essential to have a suitable and effective layout design on a production floor. M Bakery is one of the bread industries that has been established since 2010. The core problem in the case study object is the far distance of the material handling movement. One solution to this problem is to improve the layout of facilities in the production area. The study will compare two different algorithms which are BLOCPLAN and CORELAP and choose the best one between these algorithms. The total movement moment of the current layout is 379,932 meters/year and OMH is IDR 1,215,712/year. The results of the BLOCPLAN based layout are the total movement moment of 263,767 meters/year, OMH of IDR 1,054,201/year, and an efficiency rate of 30.57%. While the results of the CORELAP based layout are the total movement moment of 418,710 meters/year, OMH of IDR 1,477,648/year, and an efficiency rate of -10.21%. From the comparison of the result of the two algorithms, the chosen proposed layout design is the BLOCPLAN based layout which has the highest efficiency rate of 30.57%.