Journal of Innovation and Technology

Modification of Casava Starch Properties by Spontanesous Fermentation

Neti Yuliana — 2023-04-01

The impact of spontaneous fermentation on the physical and chemical characteristics of fluidized cassava starch treated in a sedimentation tank were examined. Tapioka, aci puter, and elot are three types of casava starch products that were made from starch slurry collected at various periods of spontaneous fermentation. By different spontaneous fermentation time, the appearance of granules was significantly changed. Besides, there was diffrent response color to iodine test indicating a different amylopectin chain-length distribution pattern. Among them, there were significant differences in moisture content, swelling power, water absorption ratio, gel formation ability and pH value. These studies showed that spontaneous fermentation might be used to modify casava starch products.

The Selection of Suppliers of Ready Mix Concrete Raw Materials Using the Fuzzy AHP Method (The Case Studies: Sadawarna Dam Construction Project Package 1)

Hajar Kamilah — 2023-04-30

The construction of facilities such as buildings, roads, and dams has an important part role in supporting daily life activities. One of all the facilities currently being built is the Sadawarna Dam Construction Project Package 1. Where does the project function to supply the needs of water resources and irrigation in West Java. However, in the construction process the project has encountered obstacles such as delays in the delivery of raw materials by the suppliers which caused the casting time to be delayed. The solution to these problems can be found by the improvement the supplier selection method. One of the methods that can be used is the Fuzzy Analytical Hierarchy Process (Fuzzy-AHP). Where in the process will expand measuring tools in the selection decisions that involve expert respondent. As The variables in determining suppliers use 4 criteria such as price, delivery, quality, and location as well as 7 sub-criteria such as payment methods, bid prices, delivery times, delivery of flexibility, delivery of capacity, consistency of quality, and specification conformance. From these variables, a comparison value with the AHP scale will be obtained which will be converted into a Triangular Fuzzy Number (TFN) scale. The results of this research obtained the best criteria is quality and sub-criteria is the bid price, as well as the best alternative from the selection of suppliers of concrete raw materials suppliers of fine aggregate materials is CV BTP Cimalaka at 51.3% and suppliers of coarse aggregate materials are PT Fajar Mandiri at 63.7%.

Renewable Energy in Bangka Belitung Island Province

Wahri Sunanda — 2023-04-30

Bangka Belitung Island Province, which consists of 7 regencies/cities, has the potential for new renewable energy, both solar, wind, marine and biomass. Energy management policies in the regions have been outlined in regional regulations concerning the 2019-2050 regional general energy plan. It is targeted that in 2025, the energy mix will reach 17.21% and 30.97% in 2050. This article aims to highlight the potential and challenges on development and managing the renewable energy in Bangka Belitung Island Province.

Analysis of the Potential of North Bengkulu's Air Nokan River in the Context of Fulfilling Water Needs for Micro-hydro Power Plants and Irrigation

GUSTA GUNAWAN - — 2023-04-30

The Air Nokan River is located in Kemumu Village, Arma Jaya District, North Bengkulu Regency which is thought to have potential for agricultural water resources and Micro Hydro Power Plants (PLTMH).The detailed objectives of this study are as follows: i). Calculating how much water is available in the Air Nokan river. ii). Calculating the water requirement for an irrigation area. iii). Calculating the need for water for power generation and iv). Designing buildings for PLTMH. The method of this study is to use various mathematical equations that have been found by previous researchers. The primary data used are river dimensions and flow velocity. The water discharge in the river is calculated using the continuity equation. The mainstay discharge is calculated using the Mock method. Secondary data in the form of rainfall was obtained from three rain measuring stations. Rainfall data is processed using the algebraic average method. Climatological data were obtained from BMKG Bengkulu Province. Evapotranspiration was calculated using the modified Penman method. The results of data processing obtained a cross-sectional area of ??the river 58 m² and a flow velocity of 1.5 m/s so that the river water discharge is 69.6 m³/s. The maximum discharge required for irrigation purposes is 2.13 m³/s. The maximum discharge required for power generation is 5.5 m³/s. The mainstay discharge with the lowest 85% probability in January is 7.63 m³/s.Based on the results of the analysis, it was concluded that the Air Nokan river can meet the needs of water to flow irrigation canals and power plants

Escalation of Visual Street Furniture Accentuation at Public Corridor of Baiturrahman Mosque in Putroe Phang Park

Rinal Mirsa — 2023-04-30

The public corridor is the basic character of the road which represents a linear movement space, becomes a provision for circulation. The road corridor as a linear space is not only a circulation space, but as part of a community activity space that has the potential to increase and develop. The formulation of the problem in this study is how to identify street furniture in public corridors, visual accentuation of street furniture in public corridors and escalation of visual accentuation of street furniture in public corridors. Aims to find out how the escalation of the visual accentuation of street furniture. This study uses a quantitative method with a descriptive approach. The results obtained from this study are that the majority of respondents to street furniture that are more attractive and prominent are decorative lights. However, street furniture that doesn't stand out is the sidewalk. Things that must be escalated are sidewalks and facilities with pedestrian paths. To create a good pedestrian path, it must have complete, safe and comfortable criteria.