LP - International Published Articles: Recent submissions
Now showing items 1-20 of 769
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An Analysis on the Effect of Environmental Performance and the Implementation of Environmental Management System (ISO 14001) on the Issuer Financial Performance
(2019)This study aims to examine and analyze the impact of Environmental Performance as measured by the result of PROPER (Pollution Control Evaluation and Rating) assessment and the implementation of ISO 14001 environmental management ... -
The Role of Institutional Ownership in Strengthening the Enterprise Value on the Banking Issuers
(2019)This study examines the role of institutional ownership in moderating the relation between fundamental factors of a company and Corporate Social Responsibility (CSR) and Enterprise Value (firm value). The type of this ... -
A Low Profile Rectangular Patch Microstrip Antenna for Dualband Operation of Wireless Communication System
(2018)This paper discussed a low profile rectangular patch microstrip antenna design working on dual-band 1.8 GHz and 2.4 GHz. Dual-band characteristic is achieved by using inset-feed point and slot size adjustment. The designed ... -
Computer Simulation and Implementation of Defected Ground Structure on a Microstrip Antenna
(2018)Defected Ground Structure (DGS) is a method reducing etching area on antenna ground to form desirable antenna's ground field. This paper reports the method impact on microstrip antennas working on 1800 and 2400 MHz. These ... -
Design and Analysis Microstrip Dipole using Fractal Koch for 433 MHz Applications
(2018)This paper discussed the dipole microstrip antenna design using fractal Koch for working on frequency of 433 MHz. The fractal Koch was used to reduce the size of the microstrip antenna. The smaller the antenna size, the ... -
Passive Filter Design for Reducing Harmonics in Light Emitting Diode Bulb
(2018)Harmonics reduce power quality and increase inefficiency. Although light emitting diode (LED) bulb has been considered more efficient than previous bulb technologies; its internal circuits potentially generate additional ... -
Underground Radio Propagation on Frequency Band 97 Mhz – 130 Mhz
(2018)Radio communications do not work only in the air and underwater, but also underground. Some applications such as mining and earthquake detection require underground radio devices. This paper reports an assessment of ... -
Miniaturization of Rectangular Patch Microstrip Antenna by using Complementary Split Ring Resonator
(Universitas Sumatera Utara, 2018)The mobile device miniaturization requires the applied antenna microstrip size be much smaller to reduce the radio front-end load. This paper discusses the rectangular patch microstrip antenna miniaturization by ... -
The Management Development of Kuda Kepang in Serdang Bedagai Regency, North Sumatera
(2017)This study deals with the model of management development of kuda kepang in Sedang Bedagai regency, Sumatera Utara. The aim of the study is to analyze the management development in some kudang groups. Data collection uses ... -
The Use of the Kelor Seeds (Moringa oleifera) as Alternative Coagulant In Waste Delivery Process of Textile Industrial Waste
(2017)This research is to know the influence of moringa seed as coagulant, pH of liquid waste textile industry (jeans wash), size of moringa seed particles to decrease of turbidity percentage. Measurements were made to Total ... -
Effect of Clam Shell Powder (Anadara granosa) Composition on Physical and Mechanical Properties of Polyester Resin Particle Board Products
(2017)In this work, the produced particle board was one of the panel products that was made by using shells powder as filler and unsaturated polyester resin as matrix with the addition of methyl ethyl ketone peroxide as catalyst ... -
The Effect of Increasing Chitosan on the Characteristics of Bioplastic From Starch Talas (Colocasia Esculenta) using Plasticizer Sorbitol
(2018)The aims of this research to determine the profile of starch gelatinization, bioplastic and the effect of increasing chitosan and sorbitol to the properties of tensile strength and elongation of break bioplastic. Preparation ... -
Utilization of Jackfruit Seeds (Artocarpus heterophyllus) in the Preparing of Bioplastics by Plasticizer Ethylene Glycol and Chitosan Filler
(Universitas Sumatera Utara, 2018)Bioplastic is the plastic that is naturally decomposed with the help of microorganisms. The use of starch as the main ingredient for the plastic manufacture has a great potential, because in Indonesia, there are varieties ... -
The Effect of Chitosan, Sorbitol, and Heating Temperature Bioplastic Solution on Mechanical Properties of Bioplastic from Durian Seed Starch (Durio zibehinus)
(2016)Nowadays, bioplastics is often researched to substitute the conventional plastics because bioplastics come from raw materials that is very enviromentally friendly and bioplastics is degradable. The purposes of this research ... -
Effect of Gelatinization Temperature and Chitosan on Mechanical Properties of Bioplastics from Avocado Seed Starch (Persea americana mill) with Plasticizer Glycerol
(2015)Bioplastics are polymers which are derived from renewable biomass resources, such as starch, cellulose and lignin for plants and casein, protein and lipid for animals. The aim of this research to obtain the effect of ... -
Production of Bioplastic from Avocado Seed Starch Reinforced with Microcrystalline Cellulose from Sugar Palm Fibers
(2018)The influence of microcrystalline cellulose derived from sugar palm fibers and glycerol on the mechanical properties of bioplastics from avocado seed starch was studied. Sugar palm fibers underwent alkali treatment, ... -
Supply of Avocado Starch (Persea Americana Mill) as Bioplastic Material
(2017)The purpose of this study was to determine the effect of time precipitation of avocado slurry seed to yield of starch. Starch analysis included starch content, moisture content, amylose content, amylopectin content, ... -
Optimizing Rectangular Patch Antenna with Microstrip Line Feed Using Single Stub
(2013)Antenna microstrip is one of the antenna types that have been chosen to support small and lightweight equipments. However, its performance is poor in conventional form. This paper discussed the optimization of a single ... -
Higher Plasma Cd4 Lymphocyte Count Correlates with Better Cognitive Function in Human Immunodeficiency Virus-Acquired Immunodeficiency Syndrome (HIV-AIDS) Patients
(2017)Neurocognitive disorders in HIV-AIDS are still prevalent despite the use of antiretroviral therapy and seem to be under-recognized. Plasma lymphocyte CD4 count is a marker for general immunology status, but its association ... -
Correlation Between Hypertension and Cognitive Function in Elderly
(2017)Hypertension and cognitive impairment are common disorders among elderly adults, and their prevalences tend to rise as the population ages. This study aimed to determine the correlation between hypertension and cognitive ...