This research aims to analyze the effect of the cassava peel biosorbent powder
activation process on the characteristics of the biosorbent powder, as well as
determine the optimum contact time and optimum dose of biosorbent ...
This research aims to synthesize biodiesel using a CaO catalyst from blood cockle shells
impregnated with SiO2 from coconut fiber at a concentration of 3% w/w. The resulting
catalyst was characterized using the Brunauer ...
Life insurance is a protection effort provided by the insurer against risks to the insured’s
life that will arise from an unpredictable event. Insurance companies need
to calculate reserves to prepare funds when participants ...
The porang plant (Amorphophallus muelleri Blume) is a type of Indonesian tuber plant
that belongs to the family of Araceae plants. In recent years, the demand for porang in the
world and domestic markets has continued ...
Mazaya Souvenir Shop Pekanbaru is a company that operates in the culinary sector to
be ranked first in the largest culinary industry in Pekanbaru, starting from processing,
raw materials, packaging quality and distribution ...
This research aims to determine the efficiency and optimum adsorption capacity for
variations in pH, contact time, and adsorbate concentration of white jabon bark powder
in the adsorption of lead (II) ions. White jabon ...
White jabon bark (Anthocephalus cadamba Miq.) has a high chemical content of
cellulose and lignin so it has the potential to be used as an adsorbent to adsorb lead(II)
metal ions. This research aims to determine the ...
This article discusses a new iterative method that is derivative-free and is obtained
by converting a single nonlinear equation to a system consisting of two equations.
By using the splitting method, a sufficient conditions ...
We discuss a development of mixtilinear incircle and excircle in bisectors of triangle.
The development carried out demonstrates the relation that forms between the radii
of mixtilinear incircles and excircles that can ...
A new approach is presented in this article with the purpose of calculating the
square roots of a quadratic matrix order 3. Determination of the explicit formula
for each square roots of quadratic matrix order 3 can be ...
CaO catalyst is a heterogeneous catalyst used in biodiesel synthesis. Modification
of the CaO catalyst with porous materials such as silica (SiO2) was carried out to
increase its catalytic activity. The aim of this ...
This research aims to determine the characteristics of activated pineapple leaf powder and
its ability to improve the physical quality of peat water which includes physical
parameters such as color, odor, pH, TDS (Total ...
This article discusses the solution of inventory problems using EOQ multi-item
model and Monte Carlo simulation to determine problem solving techniques that
can be used to managing inventory. EOQ multi-item model gives ...
Clay is composed of alumina silicate minerals with a layered and porous crystal
structure and can act as an adsorbent in adsorption processes. This research aims to
determine the optimal adsorbent dosage (0.1; 0.3; 0.5; ...
This article discusses the application of game theory on social media competition using
linear programming and Brown’s algorithm. This problem aims to determine the
optimal strategy for each social media. The social media ...
This article discusses a two-step iterative method for solving nonlinear equations.
This method is obtained by modifying Newton’s method using a weight function.
Analytically, it is shown that using Taylor expansion and ...
The welfare of workers at retirement age is an important factor in ensuring ful llment
of needs in old age, especially workers who work for a company or a government
agency. Workers must have an early plan that can ...
The Ocu language is among the dialects utilized by the residents of Kampar
Regency for communication. The indigenous community of Kampar has a
responsibility to preserve the sustainability of the Ocu language as an effort ...
Durian peel biomass has been widely studied as a source of activated charcoal because it
contains cellulose. This study aims to determine the adsorption capacity and adsorption
kinetics of durian peel activated charcoal ...
Cassava peel (Manihot esculenta Crantz.) has the potential to be used as an
adsorbent in the form of carbon used in the adsorption process to remove lead (II)
ions because of its cellulose content. This study aims to ...