Polyhydroxyalkanoate (PHA) is a biodegradable polymer substitute for synthetic
plastics accumulated naturally in bacteria as a reserve of carbon and intracellular energy
under unbalanced environmental conditions.This ...
Social media such as Twitter, Instagram, and Facebook are the most popular
communication media used worldwide. Twitter is used to express user opinions and
emotions on something, both praising or criticizing. The emotions ...
This article discusses Zillmer reserve of endowment insurance for single insurance
participant who are x years old using the interest rate model of Vasicek and Weibull
distribution. The parameters in the model is estimated ...
Wastewater pollution has become a serious environmental problem for the human and
other living organisms. The source of waste could be originated from dye residues.
Effluent from textile industry contain recalcitrant ...
Laccase is enzyme can be produced by the fungus Trichoderma asperellum
LBKURCC1 that was isolated from cacao rhizosphere soil in Riau plantation area.
This study aimed to determine the optimum pH and temperature for ...
Nipah (Nypa fruticans Wurmb.) is a plant that belongs to the Palmae family and has
been grouped into mangrove plants. Nipa can produce sap which has the potential to be
used as bioethanol. This study aimed to determine ...
Banana is a member of the genus Musa family Musaceae which has high diversity and
is widely cultivated in Indonesia, including in Tapung Hilir District, Kampar Regency,
Riau. The purpose of this study was to identify ...
throughout the body. Heart health must be maintained because the mortality rate caused
by heart disease is among the highest in the world. So early action is needed to predict
the diagnosis of heart disease as a form of ...
This article discusses the modification of Golbabai-Javidi method by approximating
the second derivative with a cubic polynomial to solve nonlinear equations. Analyt-
ically, using Taylor expansion and geometric series, ...
The most common economic problem in every country is inflation. Inflation can be
defined as a condition where the price of an item and or service increases in general and
is sustainable, which causes the price of other ...
Riau University Academic Information System is a system used by Riau University
students to access information faster through an internet connection. This system was
expected to make it easier for each user to carry out ...
This study aims to find patterns of drug combinations that are often bought together. One
way to solve this problem is the Association rule method using the CT-Pro algorithm.
This algorithm is a market basket analysis ...
Pyrazolines is a five-ring heterocyclices containing two nitrogen atoms in the ring.
Pyrazoline had a wide variety of biological activities, such as an inhibitor of tyrosinase
enzyme. Pyrazolines 4-(3-(4-hydroxyphenyl) ...
Module photovoltaic is an alternative energy development device as a converter of light energy into electrical
energy. However, in its development the efficiency of the photovoltaic module is still relatively low. ...
Plumeria Rubra L is one of the ornamental plants of the Apocynaceae family which has
been empirically proven as a medicinal plant. This study aimed to isolate and
characterize secondary metabolites from an n-hexane extract ...
Nipa waste from the nira harvest is a fibrous waste that is not further processed by the
people of Sabak Auh Village, Siak, even though it has the potential to be used as a product.
It has high economic value. The potential ...
In any triangle ABC, three different mixtilinear incircles can be constructed. In this
articles, point D will be constructed on the circumcircle of triangle ABC in order
to obtain a cyclic quadrilteral ABCD, so that ...
Jackfruit seed is a biomass from mature jackfruit processing which has not been
used optimally, because only a part of people who have used it as food. Some
research have been looking for an alternative way to utilize ...
The Government of the Republic of Indonesia in 2017 established the National
Strategy (STRANAS) as a form of government effort in accelerating the reduction of
stunting in Indonesia. Through the STRANAS, the government ...
Jackfruit is a plant that can thrive in tropical climates. Generally the part of the jackfruit
plant that is often used is the fruit, while the seeds of the jackfruit are often wasted.
Several studies have tried to find ...