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All Journal Jurnal Manajemen Atma Jaya JURNAL PENJAKORA Jurnal Kejaora (Kesehatan Jasmani dan Olahraga) Economics and Digital Business Review Journal of Business Administration (JBA) Jumper : Jurnal Mahasiswa Pendidikan Olahraga Jurnal Manajemen Edu Learning : Journal of Education and Learning Economic Reviews Journal Jurnal Indonesia Sosial Teknologi Center of Economic Students Journal (CSEJ) MULTIPLE: Journal of Global and Multidisciplinary Journal of International Multidisciplinary Research Technologia Journal Pangale Journal of Forestry and Environment Jurnal Elementaria Edukasia Jurnal Sains Materi Indonesia Journal of Physical Education Health and Sport Aksi Kita: Jurnal Pengabdian Kepada Masyarakat
Jayadi
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Religion Agriculture, Biological Sciences & Forestry Arts Humanities Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Efektivitas Perkecambahan Kemiri dengan Metode Konvensional Jayadi; Irundu, Daud; Idris, Andi Irmayanti
Pangale Journal of Forestry and Environment Vol 2 No 1 (2022): Pangale
Publisher : Program Studi Kehutanan Fakultas Pertanian dan Kehutanan Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/pangale.v2i1.1892

Abstract

Candlenut is a native plant of Indo-Malaysia and has been introduced to the pacific islands since ancient times. The constraint experienced by the community is the lack of seeds for candlenut cultivation, so this study aims to determine the effectiveness of water immersion and combustion treatments for candlenut seed germination and to obtain the most effective treatment in breaking the candlenut dormancy period. The method used in this research is the method of Randomized Block Design (RAK). The results obtained from this study were the combustion treatment was better than the hot water immersion treatment and the best was group III or large seeds.
Effect of Precursor Solvent on the Carbon Micro-Structures Derived from Spray Pyrolysis of Pine Resin (Gondorukem): Preliminary Study Jayadi; Widayatno, Wahyu Bambang; Wismogroho, Agus Sukarto; Firdharini, Cherly; Maddu, Akhiruddin; Alatas, Husin; Sari, Yessie Widya
Jurnal Sains Materi Indonesia Vol. 25 No. 2 (2024): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2024.893

Abstract

Carbon materials have been widely used in various fields. This study aimed to produce carbon using spray pyrolysis with pine resin (gondorukem) as the precursor and different solvents, namely gondorukem-acetone (GAC), gondorukem-ethyl acetate (GEA), and gondorukem-dichloromethane (GDC). The precursor was prepared in a 1:8 (m/v) ratio, and the spray pyrolysis method was employed by heating the atomized precursor solution in the heating zone of a tube furnace. The atomization precursor was infused with nitrogen gas at a rate of 1 l/min with furnace temperature set at 1000°C with heating times of 5, 10, and 20 mins. The carbonaceous materials produced from the pyrolysis were collected on the wire mesh 1000 that was put on a stainless pipe. Carbon that has been coated on the wire mesh 1000 was analyzed using the optical microscope (OM). The physical properties and morphology of the synthesized carbonaceous material were analyzed using field emission scanning electron microscopy (FE-SEM), Fourier-transform infrared spectroscopy (FTIR), Raman, and Brunaur-Emmett-Teller (BET). Based on FE-SEM analysis, the particle size of the GAC sample has an average of 283.58 nm and the highest carbon content, which reached an average of 97.312 At%. GAC samples had the lowest disorder properties in the Raman spectroscopy test, with the value of ID/IG reaching 0.795764. The functional groups observed were C–H stretching at 2920.49 cm-1, N–H bending at 1629.07 cm-1, and C–O stretching at 1159.70 cm-1. Based on carbon content, disorder properties, and functional group stabilization, carbon from the GAC precursor provides the ideal characteristics to be used as a filter material in medical masks. Meanwhile, based on BET testing, the carbon materials from GEA have the ideal material morphological properties to be used as a filter in medical masks. Spray pyrolysis is an efficient method for producing carbon materials, and the use of gondorukem as the precursor shows great potential for various applications.
The Effects of L-Arginine Supplementation on Oxygen Saturation and Blood Lactic Acid on the Physical Fitness Level of Muaythai Athletes in West Kalimantan Bawana Mukti, Ibrah Fastabiqi; Jayadi; Heri Purnama Pribadi; Dhoni Akbar Ghozali; Agam Akhmad Syaukani; Muh. Isna Nurdin Wibisana; Herdianty Kusuma Handari
Journal of Physical Education Health and Sport Vol. 11 No. 2 (2024)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpehs.v11i2.17298

Abstract

This study aims to determine the extent of the effect of L-Arginine amino acid supplementation on oxygen saturation and lactic acid levels at the fitness level (VO2Max) of West Kalimantan muaythai athletes. High lactic acid levels can be an indicator of fatigue in athletes after undergoing a physical fitness test. This type of quantitative descriptive research used a randomized group pretest-posttest group design sampling method. The subjects in the study used were male athletes on the West Kalimantan Muaythai team who will be prepared for the 2024 International Student Muaythai Championship. In this study, the subjects were divided into two groups, the first group was given a placebo and the second group was given the amino acid L-arginine. Each group was given the same treatment, namely a physical fitness test to determine the VO2Max level using a bleep test. Before and after carrying out the physical fitness test, the subjects were checked for oxygen saturation, and blood lactic acid samples were taken. The results showed that L-Arginine supplementation had a positive effect in helping to maintain optimal oxygen saturation in the body and reducing the accumulation of blood lactic acid levels that can cause fatigue in Muay Thai athletes. This shows the significant role of L-arginine supplementation in helping to enhance physical endurance performance and speed up recovery during and after physical activity.
The Influence of Leadership Style on Employee Performance through Organizational Culture at PT PLN (Persero) ULP Mattoanging Regina Dian Pratiwi; Jayadi
Journal of Business Administration (JBA) Vol. 5 No. 2 (2025): December 2025
Publisher : Jurusan Administrasi Niaga, Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/jba.v5i2.5626

Abstract

The importance of effective human resource management has increased significantly in the face of globalization and growing competition, as employees play a central role in achieving organizational strategic goals. This study aims to find out the leadership style, organizational culture, and employee performance, as well as the influence of leadership style on employee performance, the influence of leadership style on organizational culture, the influence of organizational culture on employee performance, and the indirect influence of leadership style on employee performance through organizational culture. The study population included 97 employees of PT PLN (Persero) ULP Mattoanging, with a sample of 50 permanent and contract employees selected through purposive sampling techniques. This study used a quantitative method with a descriptive and associative approach. Data was collected through questionnaires and analyzed using SmartPLS 3.0 through outer model tests, inner models, and hypothesis tests. The results of the study showed that 1) leadership style has a significant effect on employee performance, 2) leadership style has a significant effect on organizational culture, 3) organizational culture has a significant effect on employee performance, 4) there is an indirect influence of leadership style on employee performance through organizational culture, although the direct influence is greater. Thus, organizational culture plays a role in improving employee performance, but it does not strengthen the relationship between leadership style and employee performance.
The Influencee of Human Resource Development on Employee Performance at PT Pelindo Terminal Petikemas New Makassar Jayadi; Widia, Widia; Dian Gita Utami
Journal of Business Administration (JBA) Vol. 5 No. 2 (2025): December 2025
Publisher : Jurusan Administrasi Niaga, Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/jba.v5i2.5843

Abstract

In the era of increasingly dynamic business competition, human resource development has become a crucial factor in improving employee performance and ensuring organizational sustainability. The significance of this study lies in its contribution to providing an overview of the effectiveness of human resource development and identifying its influence on employee performance at PT Pelindo Terminal Petikemas New Makassar. This study aims to determine the effect of human resource development on employee performance at PT Pelindo Terminal Petikemas New Makassar. The research population consisted of 149 employees, with a sample of 60 respondents determined using the Slovin formula and the proportionate stratified random sampling technique. Data were collected through questionnaires and interviews, then analyzed using validity and reliability tests, simple linear regression, the coefficient of determination, and the t-test with the assistance of SPSS version 25. The results of this study indicated that human resource development, measured through education and training indicators, has a positive and significant effect on employee performance, which is measured through job knowledge, teamwork ability, and independent creativity. The coefficient of determination also shows that human resources contribute significantly to the improvement of employee performance.
Pengaruh Kepuasan Kerja Dan Lingkungan Kerja Terhadap Kinerja Karyawan Pabrik Gula Takalar PT. Sinergi Gula Nusantara Azwar; Lantara, A. Niniek F.; Jayadi
Center of Economic Students Journal Vol. 8 No. 4 (2025): October-December (2025)
Publisher : Fakultas Ekonomi dan Bisnis, Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56750/ghc8nx47

Abstract

Penelitian ini bertujuan untuk: (1) mengetahui pengaruh kepuasan kerja terhadap kinerja karyawan PT Perkebunan Nusantara XIV Pabrik Gula Takalar, dan (2) mengetahui pengaruh lingkungan kerja terhadap kinerja karyawan PT Perkebunan Nusantara XIV Pabrik Gula Takalar. Penelitian menggunakan pendekatan kuantitatif. Pengujian instrumen penelitian meliputi uji validitas dan uji reliabilitas, sedangkan analisis inferensial menggunakan analisis regresi linier berganda, koefisien korelasi, koefisien determinasi, serta pengujian hipotesis. Berdasarkan hasil penelitian secara parsial, variabel kepuasan kerja memiliki nilai t-hitung 2,384 lebih besar dari t-tabel 1,99006 dengan nilai signifikansi 0,020 < 0,05, sehingga dapat disimpulkan bahwa kepuasan kerja berpengaruh positif dan signifikan terhadap kinerja karyawan, dan hipotesis pertama diterima. Variabel lingkungan kerja memiliki nilai t-hitung 23,915 lebih besar dari t-tabel 1,99006 dengan nilai signifikansi 0,000 < 0,05, sehingga dapat disimpulkan bahwa lingkungan kerja berpengaruh positif dan signifikan terhadap kinerja karyawan, dan hipotesis kedua diterima.
Co-Authors Adriza Agam Akhmad Syaukani, Agam Akhmad Agung Rachmat Raharja Agus Sukarto Wismogroho, Agus Sukarto Aichah Fadlina Ramadanty Yusuf Akhiruddin Maddu Andi Wulansari Angga Pramudianto Asep Supena. Azwar Bawana Mukti, Ibrah Fastabiqi Budiandriani, Budiandriani Dani Nurcholis Dhoni Akbar Ghozali Dian Gita Utami Dola Ramalinda Don Jaya Putra Ferianto Firdharini, Cherly Handaya, Setia Herdianty Kusuma Handari HERI PURNAMA PRIBADI Husin Alatas Indri Astuti Irundu, Daud Lantara, A. Niniek F. Lathifah Sandra Devi Mahfudnurnajamuddin Muchsam, Yoki Muh. Isna Nurdin Wibisana Nisa, Maulidatun Parman Ramadani. H, Nur Fadliah Ranti Regina Dian Pratiwi Selong, Abbas Setiawati Setiawati Siskariyanti Siti Helmyati Su'un, Muhammad Suliwa Suyanto Tori Sutisna Wahyu Bambang Widayatno, Wahyu Bambang Widia, Widia Wila, Gustri Yessie Widya Sari Yuni Pratikno Zamjam Ginanjar