6 research outputs found
PERUBAHAN PERILAKU SIFAT MEKANIS BETON MUTU TINGGI AKIBAT PENGGUNAAN ABU CANGKANG KERANG SEBAGAI PENGGANTI ABU TERBANG MENGACU SNI 03- 6468-2000
No full textDi Indonesia banyak sekali bahan-bahan limbah yang dapat dijadikan sebagai bahan alternatif dalam campuran beton. Salah satunya adalah cangkang kerang yang banyak dijumpai di pesisir pantai labuhan maringgai. Dengan optimalisasi pemanfaatan limbah kulit kerang ini diharapkan mampu mengurangi limbah yang mencemari lingkungan dan memberikan nilai tambah tersendiri. Beberapa penelitian menunjukan bahwa cangkang kerang dapat dijadikan sebagai bahan penyusun dalam campuran beton. Sebelum dijadikan sebagai campuran dalam pembuatan beton mutu tinggi cangkang kerang terlebih dahulu dibersihkan, dihancurkan dan disaring menggunakan saringan no. 200. Komposisi penambahan serbuk cangkang kerang adalah 0%, 15%, 20% dan 25% menggunakan mutu beton rencana fc’ 41,5 Mpa, pengujian dilakukan pada umur beton 7 hari, 14 hari dan 28 hari. Hasil pengujian menunjukan bahwa pada usia 28 hari beton normal yaitu 26,10 Mpa, pada beton dengan campuran 15% abu cangkang kerang yaitu 26,46 Mpa, pada beton dengan campuran 20% abu cangkang kerang yaitu 29,71 Mpa dan pada beton dengan campuran 25% abu cangkang kerang yaitu 27,29 Mpa. Pada penelitian tersebut didapatkan nilai tertinggi pada pengujian kuat tekan beton pada campuran 20% abu cangkang kerang yaitu sebesar 29,71 Mpa
ANALISIS JOB MAPPING PADA PROSES EVALUASI KINERJA KARYAWAN DENGAN PENDEKATAN ANALYTICAL HIERARCHY PROCESS (AHP) (STUDI KASUS: PERUSAHAAN BIJIH PLASTIK)
No full textJika membutuhkan abstrak atau isi jurnal silahkan menghubungi author melalui e-mail [email protected] atau [email protected]
Dipublikasikan tanggal: 4 Juli 202
Rhodiola Rosea: a plant from the Crassulaceae family that has the potential to reduce muscle pain and increase range of motion during exercise-induced muscle damage.
No full textThis study aims to analyze the potential of rhodiola rosea in reducing muscle pain and increasing ROM during EIMD. This experimental research uses a pre- and post-control group design. Research subjects were selected using a purposive sampling technique, then the subjects were divided into 2 groups, namely group (K1) which was given placebo and group (K2) which was given rhodiola rosea at a dose of 500 mg. A total of 18 healthy men aged between 19-25 years participated in this study. Data collection began on the first day by collecting data on subject characteristics. After that, they were asked to warm up. Physical activity is carried out afterward. These activities include high-intensity activities, such as walking lunges, good mornings, and leg extensions. This exercise is done in 4 sets with a 1-minute break (recovery) between sets. Exercise intensity is monitored using a Polar H9 Heart Rate Sensor. On day 2 or 24 hours after training, subjects took pre-test data to measure muscle soreness and ROM. Subjects were then given placebo or rhodiola rosea treatment, depending on the group assigned. On the 3rd day or 48 hours after training, post-test data was collected again. Muscle intensity was measured using a Visual Analog Scale (VAS) and ROM was measured at the knee joint using a goniometer. After the data was obtained, the data were analyzed using the IBM SPSS version 26 application. The results of this study reported that the K1 group given placebo did not significantly reduce muscle pain and increase ROM during EIMD, while the K2 group given rhodiola rosea at a dose of 500 mg significantly reduced pain. muscle and increase ROM during EIMD. Considering that pain management and ROM are very necessary to support body function, we recommend the use of rhodiola rosea for sports enthusiasts to support physical performance. [ABSTRACT FROM AUTHOR
Capabilities Information Technology And Knowledge Sharing : A Bibliometric Perspective
No full textThis study was conducted with the aim of determining various bibliometric characteristics of documents published in the Scopus database. The information starts from the type of access, year, author, subject area, document type, publication stage, source title, keyword, affiliation, funding sponsor, country, source type, and language. Capabilities Information Technology and Knowledge Sharing are defined as the use of information technology capabilities and information technology management processes between business units by using the capabilities of resources together. Research on Information Technology Capabilities and Knowledge Sharing by providing a big picture that is visualized from year to year. This study aims to map research in the field of Information Technology Capabilities and Knowledge Sharing with data from all international research publications. This study performs a bibliometric method and analyzes research data using the Services Analyze Search Results from Scopus and the VOSviewer application. The data obtained in this study amounted to 619 academic documents published from 1992 to 2020 globally. The results showed that the most productive institutions and individual researchers at the global level in the field of Capabilities Information Technology and Knowledge Sharing were Suan Sunandha Rajabhat University with 11 documents and Liu H with 7 articles. Most subject areas are Business, Management and Accounting with 619 documents. Then the most publications occurred in 2020 with 82 documents, and documents per year based on sources of 17 from Industrial Management And Data Systems. The most document types in this field were in the form of articles (79.6%) or 439 documents. The largest number of documents by country from the Study of Capabilities Information Technology and Knowledge Sharing is the United State with 190 countries and then China with 65 documents. And finally, the number of documents based on the Funding Sponsor of this study is the National Natural Science Foundation of China, totaling 32 documents
Tetrapak waste treatment using microwave pyrolysis to produce alternative gas fuels
No full textTetrapak waste is one of the most abundant wastes in the world. It consists of layers of paper, LDPE, and aluminium foil. It is difficult to recycle, however it can be converted into valuable gaseous fuel if processed by microwave heat using a dual reactor catalytic process, SiC as microwave absorber, and natural zeolite as catalyst. The sample was pyrolyzed at different Microwave Output Power (MOP) levels (300, 450, 600, and 800 W) and Catalytic Temperatures (CT) levels (350, 400, 450, and 500°C) for 30 minutes. The results showed that the MOP and CT levels positively affect the increase of the yield and improve the heating value of the gas product. For instance, at 800 W, the gas yield increased from 73 wt. in the process without catalyst to 78 wt. in the catalytic temperature of 500°C. The same effect occurred when various MOP levels were used. The gas yield increased when the MOP level raised. H2, CH4, CO, CO2, and other hydrocarbons with low molecular weights (C2+) are the major components of gas products. The presence of catalyst, an increase in CT, and a rise in MOP all boosted the generation of syngas (H2+ CO) up to 54.55 wt.. The gas yields from this experiment have a LHV of 21.97–23.46 MJ/m3 and total energy of 34.59–171.24 kJ. The high-quality gaseous products can be used as alternative fuels or feed gas for chemical synthesis © Copyright: The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted distribution provided the original author and source are cite
ACHIEVEMENT OF COMPANY VALUE IN THE FOOD AND BEVERAGE SECTOR BASED ON FINANCIAL PERFORMANCE
No full text<p><strong>Abstract</strong></p>
<p>The company value reflected in the share price is an important focus for investors and companies so it is necessary to analyze the factors that can influence it. Conceptually, the increase in company value can be driven by financial performance including ROE, EPS, MVA and EVA. However, in the initial survey, an empirical gap was found at PT Indofood CBP Sukses Makmur Tbk, where these four variables did not always influence stock prices, and the research gap that occurred required the author to further examine the influence of these four variables on stock prices. The difference between this research and the previous one lies in the longer research period, namely 10 years, so it is more representative. With a population of 58 companies, a purposive sample was obtained of 21 companies. Though Robust Least Square Analysis, it is on found that simultaneously and partially Roe, EPS, MVA and EVA have a significant effect on firm value, thus the four variables can be used to measure the value of F&B companies listed on the IDX</p>
