ABSTRACT This research was conducted at Ayam MDR Business, located on Manyar Sakti Street, Binawidya District, Pekanbaru. The purpose of this research was to identify and analyze strategies for increasing sales. The population in this study was all the smashed fried chicken business in Binawidya sub-district. This study used a non-probability sampling method, namely purposive sampling, with Mr…
ABSTRACT The quality of financial statements is important to support strategic decision-making. Despite receiving an unqualified opinion in its audit of the financial statements, the Audit Board of Indonesia revealed that there were still issues related to internal control systems and compliance with laws and regulations. This study aims to examine and analyze the effect of the quality of …
ABSTRACT This study aims to determine the effect of time budget pressure, professional commitment, and task complexity at KAP Riau and Riau Islands. The research method used was quantitative, with multiple linear regression as the analytical tool. The population in this study were Junior Auditors, Senior Auditors, and Lead Auditors who were at Public Accounting Firms in Riau and Riau Islands. …
ABSTRACT Medical waste incineration in hospitals may release microplastic particles into the atmosphere. Microplastics are plastic particles ranging from 1 μm to 5 mm in size, characterized by their light weight, ease of dispersion, and potential risks to human health and the environment. This study aimed to analyze the abundance, types, and polymer composition of airborne microplastics a…
ABSTRACT Siak River water has a high natural organic matter (NOM) content, which has the potential to form disinfection by-products in the form of trihalomethanes (THM) when it reacts with chlorine. THM are carcinogenic and have fatal impact on human health, so treatment is necessary before disinfection. This study aims to calculate the efficiency of organic and color removal in Siak R…
ABSTRACT The Siak River, a source of raw water for Pekanbaru City Water Company, contains organic matter content and high water color. Organic matter content in river water will produce THM when disinfected with chlorine, so it is necessary to treat organic matter before disinfection. This study aims to calculate the efficiency of organic matter and color removal and determine the optimal…
ABSTRACT Sago bark has potential as an alternative raw material for environmentally friendly bioenergy, with the potential bio-pellets from sago bark capable of producing a calorific value of around 4,855 kcal/kg, thus meeting the biomass pellet standard for energy. This study aims to analyze the effect of co-firing variation of sago bark biomass pellets based on SNI 8951:2020, to assess t…
ABSTRACT Dimethylacetamide (DMAc) is a highly important organic solvent widely used in the pharmaceutical, textile, and plastic industries due to its excellent thermal stability, high purity, and superior solvent properties. The demand for DMAc in Indonesia has continued to grow annually; however, the supply is currently fully dependent on imports. This presents a significant opportunity for I…
ABSTRACT The demand for Styrene in Indonesia is predicted to increase by 5.5% during the period from 2024 to 2031. The supply of styrene in Indonesia comes from various countries such as China, Canada, Thailand, and Japan. The increase in styrene demand from China's downstream industry is the main driver of rising styrene prices, with the highest demand for styrene dominated by the Asia-Pacifi…
ABSTRACT Ammonia is a compound formed from the bonding of hydrogen and nitrogen atoms which is a gaseous compound at ambient temperature that has a sharp odor and is stored in liquid form. The main use of ammonia compounds is as a raw material in making chemical fertilizers such as UREA and NPK. Apart from that, ammonia is also commonly used as a cooling agent and in the pharmaceutical fiel…
ABSTRACT Cyclohexanol is an intermediate compound that plays a vital role in the chemical industry, particularly as a primary raw material in the production of nylon 6 and nylon 66. As the textile and plastic industries continue to grow both in Indonesia and globally, the demand for cyclohexanol has consistently increased. In response to this opportunity, a cyclohexanol plant is designed with …
ABSTRACT Chloroacetic acid has the molecular formula ClCH2COOH is a compound in the form of a colourless or transparent crystalline solid with hygroscopic properties, which absorbs water from its environment. Chloroacetic acid is produced from the chemical reaction between acetic acid and clorine gas as the main ingredient with anhydrous acetate as a catalyst, this product is obtained thro…
ABSTRACT The design of a dimethyl terephthalate (DMT) plant with a capacity of 40,000 tons/year to meet the raw material needs of the polymer industry in the production of polyethylene terephthalate, which is still imported. The location of the plant was chosen Karanganyar Village, Jenu District, Tuban Regency, East Java Province based on the need for paraxylene raw materials, water sources, t…
This final project discusses the determination of solutions to the nonlinear Dio- phantine equation x3 + y3 = z2 over the ring of Gaussian integers for the special case x ≠ y. The solution approach employs exponential properties, elementary algebra, and a method of separating the real and imaginary parts of complex expressions. Since the analytical method used here is based on simple algebra-…
Penelitian ini dilatarbelakangi oleh rendahnya kemampuan komunikasi matematis peserta didik serta keterbatasan Lembar Kerja Peserta Didik (LKPD) yang dirancang khusus untuk memfasilitasi kemampuan komunikasi matematis berdasarkan Kurikulum Merdeka. Sebagai fasilitator pembelajaran, guru perlu menyediakan LKPD yang mendukung kemampuan komunikasi matematis, khususnya bagi peserta didik fase D. Ke…
Penelitian ini dilatarbelakangi oleh rendahnya kecakapan pemecahan masalah matematis peserta didik. Proses pembelajaran masih berpusat pada guru, sehingga peserta didik cenderung pasif dalam kegiatan pembelajaran di kelas dan belum mampu untuk memecahkan masalahnya sendiri. Peserta didik kurang memahami soal-soal pemecahan masalah disebabkan karena peserta didik kesulitan memahami informasi pad…
Penelitian ini dilatar belakangi oleh rendahnya kemampuan pemahaman konsep matematis siswa di Indonesia dan masih terbatasnya penggunaan LKPD yang disusun berdasarkan Kurikulum Merdeka oleh guru sebagai sarana penunjang pembelajaran. Sebagai fasilitator pembelajaran, guru perlu menyediakan LKPD yang mendukung pengembangan kemampuan pemahaman konsep matematis, khususnya siswa fase E. Kemampuan p…
Penelitian ini dilatarbelakangi oleh pentingnya instrumen tes untuk melatih, mengukur kemampuan representasi matematis peserta didik. Sehingga sangat diperlukan suatu penelitian pengembangan instrumen tes kemampaun representasi matematis. Instrumen tes yang dikembangkan meliputi kisi-kisi soal tes, kartu soal, dan rubrik penilaian. Instrumen tes kemampuan representasi matematis yang dikembangka…
Abstract: This study aims to produce a valid and practical Problem Based Learning (PBL) module to facilitate the mathematical problem-solving ability of phase D students on the topic of curved-surface solid shapes. This research employed the Research and Development (R&D) method using the 4D development model (Define, Design, Develop, Disseminate). The research instruments consisted of expert v…
Penelitian ini dilatarbelakangi oleh pentingnya kemampuan berpikir kreatif matematis siswa yang merupakan salah satu tujuan pembelajaran Kurikulum Merdeka. Namun, faktanya kemampuan berpikir kreatif matematis (KBKM) siswa khususnya pada materi Statistika masih rendah. Rendahnya pencapaian peserta didik khususnya indikator KBKM disebabkan karena siswa terbiasa menyelesaikan soal rutin yang hanya…