Efektivitas Ekstrak Organik Kulit Buah Jengkol (Pithecellobium Lobatum Benth.…

ABSTRACT Maize (Zea mays) is one of the most important carbohydrate-producing food crops in the world along with wheat and rice. Maize production in Riau decreased by 15%-75% due to Spodoptera frugiperda J.E. Smith larvae attack. Jengkol fruit rind (Pithecellobium lobatum Benth.) is one of the plants that have the potential as a vegetable insecticide. P. lobatum contains the active compound je…

Penerapan Model Pembelajaran Inkuiri Terbimbing Berbantuan Media Virtual Lab …

Physics as a science that studies natural phenomena requires an understanding of facts, concepts, principles, and theories obtained through the scientific process. However, physics learning is often centered on the teacher, so students tend to only memorize formulas without understanding their meaning which causes physics to be considered difficult. One approach that can overcome this problem i…

Disfemisme Dalam Tuturan Masyarakat Desa Igal Kecamatan Mandah Kabupaten Indr…

Bahasa merupakan alat penting dalam interaksi sosial, dan tiap komunitas menggunakan ragam bahasa yang berbeda. Salah satu fenomena dalam penggunaan bahasa adalah disfemisme, yaitu ungkapan atau kata yang memiliki makna kasar, tidak sopan, atau berkonotasi negatif. Dalam masyarakat Desa Igal, Kecamatan Mandah, Kabupaten Indragiri Hilir, disfemisme sering digunakan dalam komunikasi sehari-h…

Pengaruh Suplai Tegangan Kurang Terhadap Kinerja Motor Induksi 3 Fasa Di Lab…

ABSTRACT An undervoltage supply below the nominal value can significantly affect the performance of a 3-phase induction motor, especially under load conditions. This study aims to analyze the effect of an undervoltage supply on a 3-phase induction motor in the Electrical Energy Conversion Laboratory at Universitas Riau. The experiment was conducted with voltage variations of 380 V, 360 V, 340 …

Isolasi Lignin Limbah Kulit Batang Sagu Dengan Metode Organosolv

ABSTRACT Sago bark is a byproduct of the sago starch filtering process that contains lignocellulosic components. The separation of these lignocellulosic components can be achieved through a lignification process. One chemical method of delignification employs an organosolv solvent. This research aims to determine the optimal concentrations of formic acid and acetic acid to achieve the highest …

Aplikasi Edible Coating Dari Pati Jagung Pada Cabai Rawit Merah

ABSTRACT Red cayenne pepper is one of the commodities in Riau that has a shelf life that only a few days at room temperature, then it needs to be handled after a post harvest. Edible coating is a thin layer that will prevent the water movement then the respiration process is inhibited. Edible coating can be made by starch, such as corn starch because it has a high content of amylose and amylop…

Analisis Putusan Mahkamah Agung Nomor 65 Mp/Hum/2018 Tentang Pengujian Pkpu N…

ABSTRACT The constitutional issue regarding the requirements for nominating members of the Regional Representative Council for the 2019 Election, began with the Constitutional Court Decision Number 30/PUU-XVI/2018 dated 23 July 2018 which stated that DPD member candidates may not have the status of administrators (functionaries) of political parties, both at the level central and at the re…

Analisis Kinerja Embung Batang Dareh Bulakan Kota Payakumbuh

ABSTRACT The Batang Dareh Bulakan Reservoir in Limbukan Village, South Payakumbuh Subdistrict, Payakumbuh City is a crucial infrastructure for water resources management in the region. This research aims to evaluate the performance of the reservoir using the Likert scale method. The assessment stages refer to Circular Letter of the Directorate General of Water Resources Number SE/D/2017, …

Pengujian Prinsip Exclusionary Rules Dalam Sidang Praperadilan Di Indonesia

ABSTRACT The determination of a suspect is part of coercive measures and is almost equivalent to the determination of a person as a convict. Therefore, the determination of a suspect must be carried out carefully and based on valid evidence, as stipulated in Article 184 of the Indonesian Criminal Procedure Code (KUHAP). The phrase "valid evidence" in KUHAP carries two important meanings. First…

Pengaruh Fear Effect Pada Model Predator-Prey Holling Tipe-Iii Dengan Perlind…

The Lotka-Volterra model describes predator-prey interactions, which is then modified using the Holling type-III functional response by incorporating the phenomena of fear effect and prey refuge. In the studied model, three equili- brium points are obtained: the extinction equilibrium, which is a saddle point; the predator-free equilibrium, which can be either a saddle or a locally asymp- totic…

Politik Hukum Pembentukan Peradilan Tata Usaha Militer Dalam Perspektif Negar…

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Penegakan Hukum Pidana Terhadap Warga Negara Asing Yang Melakukan Praktek Pro…

ABSTRACT Law enforcement is a means of realizing the law envisioned by the law makers. Enforcement of criminal law against foreign nationals who practice prostitution in Pekanbaru is an important issue in maintaining security and public order, as well as maintaining Indonesia's image in international eyes. This research aims to analyze how criminal law enforcement is applied to foreign national…

Perancangan Dan Pembuatan Body Mobil Hemat Energi Gardapati Kategori Prototype

ABSTRACT ABSTRACTABSTRACT This research aims to design and manufacture the body of the Gardapati energy-efficient car in the prototype category, adhering to KMHE 2024 regulations. The vehicle body was designed using CFRP (Carbon Fiber Reinforcement Polymer) to reduce weight and enhance aerodynamic efficiency. Aerodynamic simulations were conducted using Ansys Workbench software to compare the …

Pengaruh Penggunaan Aseton, Metanol, Dan Air Terhadap Kinerja Heat Pipe Photo…

ABSTRACT This study aims to analyze the effect of using acetone, metanol, and water as working fluids in heat pipes on the performance of a Photovoltaic/Thermal (PV/T) system. A PV/T system integrates photovoltaic panels to generate electricity and thermal collectors for water heating, thereby enabling more efficient solar energy utilization. The heat pipe plays a crucial role in enhancing…

Karakterisasi Komposit Hibrid Serat Tandan Kosong Sawit (Tks)/Serat Karbon Be…

ABSTRACT Unmanned Aerial Vehicle (UAV) is an unmanned aerial robot that is now a national sport in the First Person View (FPV) category. Carbon fibre, as a popular FPV frame material in the aerospace industry, has the disadvantage of being brittle and not environmentally friendly as it is difficult to decompose. As an alternative, synthetic and natural fibre-based composite materials, such as …

Pemanfaatan Microcellulose Limbah Daun Nanas Sebagai Penguat Bioplastik Pati …

ABSTRACT The use of conventional plastic causes serious environmental pollution due to its long degradation time and difficulty in recycling. Therefore, an alternative to environmentally friendly and easily biodegradable plastic materials is needed. One of the biodegradable materials that can be found in nature is starch from durian seeds and cellulose from pineapple leaf fibers. This research…

Analisis Kinematika Lengan Excavator Skala Laboratorium

ABSTRACT This study aims to analyze the kinematics of a laboratory-scale excavator arm using manual calculation methods. The analysis includes determining the Degrees of Freedom (DOF), position, velocity, and acceleration of the boom, arm, and bucket mechanisms. The results show that the excavator arm mechanism has 3 DOF. In position analysis, the widest range is found at Point H for the boo…

Analisis Overall Equipment Effectiveness (Oee) Dan Penjadwalan Pemeliharaan M…

ABSTRACT This study analyzes the effectiveness of Kernel Crushing Plant machines at PT. Wilmar Nabati Dumai using the Overall Equipment Effectiveness (OEE) method. This study also determines the machine maintenance interval based on Mean Time To Failure (MTTF) and Mean Time To Repair (MTTR). The results of the OEE analysis show that the machine effectiveness value is still below the world-clas…

Analisis Hasil Pembengkokan Pipa Pada Alat Pembengkok Pipa Hidrolik Gerak Ver…

ABSTRACT Vertical motion hydraulic pipe bending equipment or also called edge bending uses the rotary draw bender method, with a hydraulic jack rod pushing and rotating the die so that it pulls the pipe until it bends following the path of the rotating die. This equipment is designed for continuous laboratory scale research. Bent pipes often experience deformation in the form of shrinkage at t…

Pabrik Propilen Glikol Dari Gliserol Proses Dehydration-Hydrogenation Dengan …

ABSTRACT Propylene glycol is one of the organic compounds commonly used as a food preservatives, cosmetic raw materials, wetting agents for chewing gum, monomer in the synthesis of polyester, and anti-freeze liquids. The demand for propylene glycol is increasing along with the development of the industry, especially the cosmetics and textile industries. The market value of propylene glycol glo…