Tertiary Butyl Alcohol is an alcohol compound with the molecular formula C4H9OH. In the current industrial era, tertiary butyl alcohol is produced as a finished product and as an intermediate product. Tertiary butyl alcohol is used as a chemical solvent and also in the pharmaceutical field, while intermediate products are used as raw materials for the process of making methyl tertiary butyl eth…
Ethylene glycol is an organic compound with the molecular formula C2H6O2 which is included in simple diols, in the current industrial era ethylene glycol has an important role and is widely used as antifreeze in car radiators and as raw material for the manufacture of polyester fiber, in addition to being an auxiliary material in the latex industry and coolant in compressors. The main raw mater…
Isopropyl alcohol (C3H7OH) is a colorless, volatile and flammable liquid. Isopropyl alcohol has various uses, both as a final product and intermediate. Some examples of isopropyl alcohol as a final product are: as a solvent, the manufacture of chemicals in agriculture, additives in medicines, and antiseptic ingredients. As an intermediate product, isopropyl alcohol is used for the production of…
All ofmaterial in the earth has specific restivity value, so that it can be measured with using Geoelectrical equipment. Geoelectrical method uses electric resistivity variation based on the measurement ofpotentials differentiation caused ofthe current injected into the earth. Sofar the value ofmaterial resistivity still known in general, like sand: 10 -5000 ohm.m, sand saturated: 1 -1750 o…
The aim ofthisresearch is to leant the influence ofrecycledaggregate with the certain percentage against strength that was produced. Recycled aggregate could be easily obtained in the devastatedarea since there we a large number of debrisfrom buildings. In thisresearch, recycled aggregate will be used to replace apart or the whole gravelsand in mortar, The ratio between cement and sand in …
The objective of this study is to analyze strength and ductility behavior high-strength concrete columns confined high-yield-strength steel by variousyield strength of transverse reinforcement, spacing of transverse reinforcement and shape ofconfinement (circular hoops andspirals). The advantages of thisstudy is to reduce reinforcement detailing, so it can increase workability. Behavior of …
The structure failure in the pavement system always causes damages and makes roadway notfunction optimally. To know the level of existing damage, an investigation to measure the PCI (Pavement Condition Index) is required to be done, in this study we consider the road link ofKuok - Kampung Gadang especially at KM 2. The purpose ofthis study is to know the condition ofthat road using PCI clas…
Mixing time is very important in controlling concrete compressive strength, the longer waktu pengadukan the more concrete compressive strength decrease. This is occored because couldjoint against concrete mixture when it is setting time ofconcrete. In order to control setting time. It is used additive chemical material such asplastiment RTD-01 as solution. In this research, it is obseved t…
ABSTRACT Portland cement represent especial component in concrete technology. Cement process can make worse effect of this global warming and glasshouse so that need thrift of use cement through substitution with waste (pozzolan) as concrete mixes. Dregs is waste of acacia having the nature ofpozzolanik because containing element ofSiC>2 dan CaO which can be used as a substitution cement. …
The whole stream of Sungai Siak (Siak River) both upstream and downstream is located in the Riau’s province. Upstream of the Siak’s watershed is upstream for Tapung kanan River that having many tributaries. Siak’s watershed is a critical river bashin. It causes due to significantly fluctuated the watershed. A Large discharge fluctuations between the rainy and dry seasons could resulte…
Riau University is the largest campus in Riau province. Riau University has a Local Area Network (LAN) network in each faculty. Wireless networks are used to support academic learning systems, e-learning, and so on. In accessing the network, the importance of a good internet network quality is something that needs to be considered by the academic community within the FT UNRI environment. Theref…
A power transformer is a substation component that has an important role in the electricity distribution system. During operation, the power transformer cannot be separated from abnormal conditions or disturbances. A disturbance in the power transformer will have a much greater impact on the power transformer itself. The Bagan Batu substation has added an installed capacity of 60 MVA of power t…
The utilization of medical electronic devices has undergone extensive development in the present era, encompassing various facets such as product design, prototyping, and device control systems. Device engineering has emerged as a critical element across diverse dimensions of human life, spanning the domains of device engineering and healthcare. Effective communication assumes a profound role i…
Karas Island Reservoir is a reservoir that functions to provide raw water. The Karas Island Reservoir is located on Karas Island, Galang District, Batam City, Riau Archipelago. The Karas Island Embung needs maintenance so that it can provide benefits to the community. This research is intended to assess the performance of the Karas Island Reservoir based on the evaluation aspects of the reservo…
This research is located at the Kebun Raya Kota Batam Reservoir, with the aim of assessing the performance index of the Kebun Raya Kota Batam Reservoir. The performance index obtained will be used as a basis for planning maintenance operations at the reservoir. The assessed aspects of the reservoir include the Physical Aspect, Operational and Service Aspect, Security and Environmental Aspect, a…
Peatlands are naturally always wet and moist and will potentially cause various disasters if drained. In restoring the functions of peatland ecosystems as carbon storage, biodiversity storage, water storage, and reducing greenhouse emissions, peatland restoration through good water management is needed. This research was conducted at KHG Bengkalis Island, Bengkalis Regency, Riau Province. For T…
Brittle properties are a crucial weakness of concrete materials used in the world of construction. This encourages the use of additional materials which function to minimize direct collapse due to the brittle nature of concrete. One of the additional materials used is polypropylene fiber. This fiber is a type of plastic that is able to increase and improve concrete properties such as ductility …
Electrical Engineering is one of the majors at the University of Riau. Currently, academic seminars in the Department of Electrical Engineering are still carried out manually, such as assessment of Practical Work (KP) seminars, Proposal Seminars and Thesis Trials. The seminar was carried out by giving an assessment on the form given. Then, the assessment sheet is approved by the Practical Work …
Waste processing machines that are shaped like Automated Teller Machines (ATMs) are used to manage plastic bottle waste efficiently, to support the use of these machines so that it is easier for users to use waste processing machines. In operation, the point management application will provide features to retrieve points that users earn from the machine and features to redeem these points. So, …