The study of waterwheels curved undershot type is done in order to find a source of energy as an electricity generator. The picohydro generator test equipment is produced based on field survey data. The test is carried out by varying the flow rate and torque load and then calculations are performed to determine the performance of the waterwheel. From the test it is known that the maximum power …
Friction welding is a solid-state welding without the use of filler metal by using pressure method where by two workpieces to be connected are placed in contact and regulated relative motion in pressure, so that on the contact surface there will be heat (close to the metal liquid point), then after the rotation is stopped will form metal connection. Friction welding in the laboratory technology…
The main constraint faced in the utilization of lignocellulosic organic waste is lignin content that is difficult to degrade both enzymatically and chemically. One solution to solve the problem is by composting method with the addition of Trichoderma viride and MOL Tapai. Composting TKKS using windrow method for 40 days. The study was conducted by varying the dosage of Trichoderma viride and MO…
In Law No. 22 of 2009 on Road Traffic and Transportation that has been regulated in the use of vehicles with the rules, but in fact there are still many who violate the rules, especially for minors who drive a vehicle without having a driver's license and this with the support of the parents. But so far, any form of violation is not seen by the traffic police even the lack of sanctions imposed …
The term reclamation is a derivate of the English term reclamation comes from the reclaim verb meaning to take it back, with emphasis on the word “back” reclamation according to law number 1 year 2014 the amendement to law number 27 year 2007 is an activity carried out by everyone in order to increase the land resources reviewed from environmental and socio-economic point of view by way of …
Roads damage can use inconvenience for road user. Roads are damage should be repaired or increased. Overlay calculations using data deflection on the way through the Garuda Sakti Pekanbaru City conducted to complete the road infrastructure. The purpose of this study was to calculate the extra thick layer (overlay), the design life 5 years and 10 years, traffic growth 7,04 %, while the length of…
The research aims to observe and to find the best concentration of wild betel leaf powder extract to control cocoa pod disease caused by Phytophthora palmivora Butl. The research had been conducted from October to December 2015 at the Laboratory of Plant Pathology, Faculty of Agriculture, University of Riau. The research was conducted experimentally using a completely randomized design consisti…
The purpose of this research is to know the influence of biogas liquid waste, the effect of N fertilizer and the interaction of the combination of biogas liquid waste fertilizer with N fertilizer, and to determine the dosage of biogas liquid waste, N fertilizer and combination of biogas liquid waste fertilizer with N fertilizer that can increase the production of plants mustard. This research w…
Modified sago starch (mosas) is sago starch which has been modified microbiology by Lactobacillus plantarum RN2-12112. Mosas be able use for substituent of manufacture sweet bread. The purpose of this study is obtained the modified sago starch by microbiology use Lactobacillus plantarum RN2-12112 and getting the ratio of flour and mosas sweet bread with the best quality standard. This study use…
The purpose of the study was to compare the antibacterial activity of Lactobacillus casei subsp. casei R-68 and Lactobacillus casei commercial against Staphylococcus aureus FNCC-15 and Escherichia coli FNCC-19. The research was carried out experimentally by testing isolates and cell-free supernatant of Lactobacillus casei subsp. casei R-68 and Lactobacillus casei commercial and to test the sens…
This study was conducted to determine the best concentration of Tween80™ in the manufacture of bioethanol from coconut water condensed by Saccharomyces cerevisiae. This study with increasing the urea and Tween80™ varying concentrations of this study conducted an experiment with four treatments and measurement in duplicate. Concentration of Tween80 ™ were T10 (0%), T2 (0.1%), T3 (0.2%) and…
This study aims to discover the effect of packaging and storage temperature conditions on the storability of white oyster mushroom meatballs and catfish that meet the quality standards of fish balls (SNI 01-2346-2006). This study was experimentally conducted using a completely randomized design (CRD). Results of analysis of variance showed that the condition of packaging and storage has signifi…
The research was to determine the effect of sago starch and rebon flour combination to the quality of sago crackers (According to SNI No. 02-7141-2009). A Completely Randomized Design used that consists of four treatments and four replications. The treatments were K1U1 (100% sago starch and 0% rebon flour), K2U2 (90% sago starch and 10% rebon flour), K3U3 (85% sago starch and 15% rebon flour) a…