Oyster mushroom (Pleurotus ostreatus) is one of the most cultivated mushrooms in the world which contains beneficial compounds for health so that the oyster mushroom is often used as an alternative food. The most frequent planting medium used for growing the oyster mushroom is sawdust that contains lignin and cellulose which are difficult to degrade. Microorganisms are used as bio-activator to …
Urea and creatinine are toxic in blood. Increased level of urea and creatinine in blood is one indicator of renal disfunction, one of which is caused by urolithiasis. Urolithiasis treatment with surgery and high-power laser is expensive and has high risk of re-formed kidney stones, so many people turn to use alternative medicine such as herbal medicine. Pelawan (Tristaniopsis obovata R.Br) is o…
The existence of the Sumatran tiger (Panthera tigris sumatrae) depends ultimately on the abundance of its potential preys in its remaining natural habitats. Yet, little is known about it in almost all areas where the presence of the big cat has been positively confirmed, such as in Bukit Rimbang-Bukit Baling Wildlife Reserve in Riau Province. The objectives of the present study were: (1) to exp…
The research was conducted in 28 April – 18 May 2017 located in Subdistrict Palas, Rumbai District, Pekanbaru City, Riau Province. This study aims to determine the amount of investment capital, knowing the ratio of income and profits and analyze the feasibility of cultivation of catfish dumbo using the application of biofloc and conventional. The method used in this research is case study met…
Tofu liquid waste is rich in micro and macro nutrients that can be used to grow microorganism such as Tubifex sp. To understand the effectiveness tofu liquid waste addition in the Tubifex sp. culture media, a study was conducted from July – August 2017. Different amount of waste was mixed with water, there were P0 (0% waste), P1 (25% waste), P2 (50% waste), P3 (75% waste) and P4 (100% waste).…
Pollutant from activities conducted around the Pinang Luar Lake enters the water and thus reducing its quality. The purpose of this research is to understand the water quality of the Lake Pinang Luar based on the type and abundance of periphyton community. This research was conducted from April to May 2017. There are 3 research stations, in the inlet (St 1), middle area (St 2) and in the outlet…
The effect of stocking density and feeding rate on the growth and survival rate of comet gold fish larvae (Carassius auratus) was conducted on 14 May to 23 June 2017 in the Laboratory of Fish Hatchery and Breeding Faculty of Fisheries and Marine, University of Riau. The larva was reared in 15 liters aquarium using water resirculation system. This research used the experimental method, while the…
The effect of substitution and combination of feed on the growth and survival rate of gold fish larvae (Carassius auratus) was conducted on May to June 2017 in the Laboratory of Fish Hatchery and Breeding Faculty of Fisheries and Marine Sciences, University of Riau.The larvae were reared in 15 liters aquarium at stocking density 2 larvae/liter. A completely randomized design (CRD) with 5 treatm…
This study was conducted on June to October 2017 in the Laboratory of Parasites and Fish Diseases, Fisheries and Marine Science Faculty, Riau University. The objective of this research was to understand the best of Lawsonia inermis L. solution for immersion in preventing the of Aeromonas hydrophila infection. There were five treatments applied namely negative control (Kn) was the fishes were no…
Edible coating application serves to replace a layer of natural waxes lost due to post harvest handling. This study aims to determine the effect of concentration of carrageenan in edible coating solution of aloe vera on the quality of guava fruit during storage. This study used a completely randomized design, which consists of five treatments and three replications. The treatments were K0 (with…
Fish of Selais Bungkuk (Hemisilurus heterorhynchus) is one of the catfish in Riau which has high economic value currently becomes endangered. The purpose of this study was to aimed to examine biological reproduction aspect of H. heterorhynchus which included body length distributon of fish, the maturity stages, gonad somatic index (GSI), sex ratio, fecundity and spawning patterns as the basic i…
Time schedule can be define as distribution of time for each part of work during a project, start from the begin of work until the end of it. The goals of this research are to analyze the time schedule using network planning with CPM method; to calculate the incremental cost due to acceleration, total cost according to number of labour on critical path; and also to compare the calculation b…
Riau has the largest peat land in Sumatra, which is about 4.044 million ha. Peatlands have the potential as a carbon sink and unique habitat. But most of the peatlands of Riau has been transformed into a function of oil palm plantations, tree plantations, agricultural areas and settlements. It is expected to cause a decline in soil carbon reserves, decreased function of peatland ecosystems and …
The high value of side barriers on a road segment will cause a decrease in road performance. The amount of side barriers is very influential on the capacity of road and vehicle speed. The purpose of this study is to analyze the factors that influence side barriers as well as service levels to improve traffic performance. The research conducted in the form of traffic volume survey (LHR) to see v…
The improvement program of mung bean (Vigna radiata L.) can be done by crossbreeding, selection, and testing of the progeny to obtain new varieties. study aims to analyze the segregation of characters sparkle seed, seed shape, and color of green pea pods on the plants of the result of crossbreeding plants green pea pods brown and black. The study was conducted at the experimental station of Bio…
Mangrove ecosystem is a natural resource that has an important value in various aspects of life and environmental services. Increasingly wide spread damange to ecosystem is suspected to have lowered the various function and benefits. The research aimed to describe the characteristics of mangrove stands, calculated value of the economic benefits of mangrove ecosystem resources and determine …
Decreasing of water debit for agricultural irrigation service is the basic problem in Batang Samo Weir in Rokan Hulu Regency that caused by direct water use for fish ponds at some place around 30,05% along main irrigation channel. To reduce water losses in the primary canal, water flow analysis needed in order to create a new intake channel for the development of fishery area downstream of Bata…
Side friction is road side activity that can lead to conflict and affect the movement of the traffic flow and reduce the function of road performance. The ammount of side friction affects capacity and speed of road vehicles. This research are obtained by doing survey of traffic volume to see the density of vehicles, then surveys the side friction to see the influence of interference and instant…
3GPP sets are the standard for the latest wireless communications technology for Long Term Evolution (LTE). It has been used to meet the needs of consumers today. But only few of development city have implementing it. The rest of the city still not implement it. One of them is the taluk kuantan city. This region has not been deployed by this technology. Due to that reason the design has been ma…
Information on electrical conditions and electrical control in households is very difficult to do when away from home. The use of mobile phones can be the best solution for this because at this time the controller and monitoring system using the phone has grown rapidly. By using GSM and Arduino Module can make a tool that can monitor and control electricity at home. From the prototype-making ex…