ABSTRACT This research aims to obtain the best concentration of Sodium Hydroxide (NaOH) in relation to the characteristics of activated carbon from rubber seed shells. This research was conducted experimentally using a Completely Randomized Design (CRD) consisting of 5 treatment levels in the form of NaOH activator concentrations and 3 replications. The treatment in this study consisted of in …
ABSTRACT Acoustics is the study of sound including its production, transmission and effects. Sound is the result of the vibration of objects in the form of an analog signal with amplitude that can change continuously with time and propagate through the air. Pipes and piping systems are very important in industry as they play a vital role in regulating fluid flow from one location to another ef…
Uncontrolled growth of microalgae can cause algae blooms in waters, which have a negative impact on aquatic ecosystems. Blooming algae can reduce water quality, reduce dissolved oxygen, and release toxins that are harmful to other aquatic organisms. Based on research, hydrogen peroxide has been proven to be effective in reducing the density of microalgae at certain concentrations. However, in a…
In the face of competition between firms issue that increasing and accompanied by many problems faced by companies in Indonesia, company managers require the services of an accountant, in particular public accounting firm whose duties carry out audit of the financial statements. What has been presented in accordance PABU (Prinsip Akuntansi Berterima Umum) that is SAK (Standar Akuntansi Keuangan…
This study discusses the development of digital flip book media on the history of oil exploration in Duri City as a media for learning history in imperialism and colonialism learning materials at SMAN 11 Mandau. This study aims to 1) determine the development of digital flip book media on the history of oil exploration in Duri City on the learning materials of imperialism and colonialism during…
The background to the problem in this research is the implementation of road infrastructure development in Dusun Tua Pelang Village, Kelayang District, Indragiri Hulu Regency in 2020,2021,2022. Construction of road infrastructure in Dusun Tua Pelang Village began in 2020, but until 2022 it had not been completed. This raises the question of factors influencing this development. The aim of this …
Pendidikan menjadi pondasi utama dalam perkembangan zaman. Ilmu Pengetahuan Alam (IPA) menjadi bidang keilmuwan yang erat dengan keadaan alam dan seisinya. IPA mengajarkan kita untuk memahami dan menambah kecerdasan tentang ilmu-ilmu alam. Fisika salah satu mata pelajaran yang menjadi bagian dari IPA. Fisika sering dianggap menjadi mata pelajaran yang sulit bagi beberapa peserta didik. Kesulita…
The background of this research is that Pekanbaru City is currently filled with a population of productive age which can be an opportunity to accelerate economic growth or what is known as the demographic bonus. Through the Quality Family Village (Kampung KB) program, the Pekanbaru City government is trying to realize the same development goals and targets as the national priority development a…
This study aims to determine the level of risk of manual handling and musculoskeletal complaints on production workers at CV. Berkat Saudara Beton. The population and sample in this study included 15 production workers using saturated sampling techniques. Data collection techniques were carried out by distributing questionnaires and conducting interviews. The research method used was the LMM Ke…
This research aims to analyze the ergonomic work fatigue of drivers at CV Jasa Tama Mandiri Pekanbaru. This research method is descriptive analysis. The population in this study are permanent employees who have worked for at least 1 year, with a total of 56 drivers in the business unit. The results of this study showed that of the 56 respondents in this study, there were 4 people who ha…
This research aims to examine the influence of timeliness on the earning response coefficient, the influence of systematic risk on the earning response coefficient, the influence of profitability on the earning response coefficient, the influence of leverage on the earning response coefficient and the influence of company growth on the earning response coefficient. The objects of this r…
This study was conducted with the aim of knowing the effect of Social Media Advertising and Discount Tagline on purchasing decisions through Impulsive Buying at Shopee using the Shopee PayLater method for students in Pekanbaru City. The population in this study were students who used Shopee PayLater in Pekanbaru City. Sampling in this study was carried out using purposive sampling tec…
IMPLEMENTATION OF CHILD DEVELOPMENT DEALING WITH CASE LAW REPETITION OF CRIMINAL ACTS IN SPECIAL CHILD DEVELOPMENT INSTITUTIONS CLASS II PEKANBARU By: Alexandro Lowis Pasaribu Email: [email protected] Supervisor: Teguh Widodo Email: [email protected] Department of Sociology, Faculty of Social and Political Sciences, Uniersitas Riau Bina Widya Campus…
Liquid organic fertilizer (LOF) of catfish waste contains nutrients N, P, and K. The nutrients are needed for the growth of Azolla microphylla population in peat water media that can improve peat water quality parameters. The purpose of this study was to determine the effect of LOF of catfish waste on the growth of A. microphylla in peat water media and to obtain the best doses of LOF of catfis…
This reserch was conducted in Pekanbaru city, which is one of the big cities in Riau province and is also the capitical of Riau province which is currently developing rapidly in various types of industry, so that it become a good target for sales or distribution of body types and also demand for other industrial products and services in the city of Pekanbaru. The aim of this reserch is to analy…
Bleaching process is an important step to increase the brightness of pulp. In Bleaching process, there are various methode and one of them is peroxide extraction that using peroxide. This peroxide extraction can increase brightness with attacking the cromophore group in pulp and resulting high brightness. Way to do this process is by adding NaOH first and then continued with peroxide into the p…
Advances in technology and communication have become increasingly rapid, affecting every access to human life, which has also given rise to anxieties, including the emergence of crime in cyberspace. In this day and age, crime in the virtual world (cyber crime). One of the crimes that is currently developing is online gambling crime. Online gambling is included as a cyber crime because in carryi…
Platycerium bifurcatum is an epiphytic plant that naturally grows on branches and trunks of trees in tropical, subtropical, and rainforest environments. Previous studies have reported the antibacterial activity testing on methanol, dichloromethane, ethyl acetate, and water extracts of P. bifurcatum. Based on the literature, there hasn't been any antibacterial activity testing against n-hexane e…
Entrepreneurial interest is a sense of preference for entrepreneurial activities or interest in doing business activities. Entrepreneurial interest is influenced by several factors including knowledge and creativity. This study presents whether knowledge and creativity affect the entrepreneurial interest of economics education study program students. This study aims to determine the effect of s…
This study aims to analyze the effect of financial stability, external pressure, nature of industry and change in auditor on financial statement fraud. This type of research is quantitative. Moreover, the population was Food & Beverage Companies companies listed on the Indonesia Stock Exchange (IDX). The data collection technique used purposive sampling. In line with that, there were 28 compani…