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Analisis Coolant Dromus Beserta Variasi Coolant dari Minyak Kelapa dan Jagung terhadap Kekasaran Permukaan Material Baja ST-60 pada Pembubutan Konvensional Rony Irawan; Nurhadi Nurhadi; Fendy Kussuma
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 3 (2025): Juni : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v3i3.897

Abstract

Product quality is affected by the conventional turning process that requires coolant to maintain surface smoothness and reduce tool wear. Vegetable oils such as coconut, corn, and palm oil are environmentally friendly alternatives to chemical coolants (dromus). This study tested the effect of vegetable coolants on the surface of ST 60 steel using an experimental method with variations in a mixture of oil, water, and liquid soap. Turning was carried out at a depth of 0.5 mm, a rotation speed of 1035 rpm, and a cutting speed of 65 mm/min. The results showed that the lowest roughness was in variation 7 (80% corn oil + 10% water + 10% liquid soap) with an initial roughness value of 2.438
Prediksi Penyakit Gagal Jantung Tahun 2025-2028 Rawat Inap di RSUD Gambiran Kota Kediri Anisa Rahmawati; Krisnita Dwi Jayanti; Eva Firdayanti Bisono; Ayu Pangestuti; Nugroho Nugroho; Nurhadi Nurhadi; Budi Pranoto
Antigen : Jurnal Kesehatan Masyarakat dan Ilmu Gizi Vol. 3 No. 2 (2025): Antigen : Jurnal Kesehatan Masyarakat dan Ilmu Gizi
Publisher : LPPM STIKES KESETIAKAWANAN SOSIAL INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57213/antigen.v3i2.667

Abstract

Heart failure is the most common cardiovascular disease. Gambiran Regional Hospital has the 1st position of heart failure cases out of the top 10 diseases with the largest population in hospitalizations. To determine the prediction of heart failure disease in 2025-2028 which will increase or decrease. Using a descriptive research method, with a retrospective study research approach The population of all heart failure patients in 2021-2024 at Gambiran Regional Hospital, with a sampling technique of total sampling, the number of samples of inpatient heart failure patients in 2021-2024 at Gambiran Regional Hospital. Data collection was carried out by observation. The total number of heart failure patients increased significantly to 259 (2022). The trend has increased and decreased, the number of male patients jumped sharply to 150,3 (2024), while for women it jumped to 92,3 (2024). Overall, the prediction of the highest heart failure patient in 2028 will reach 316,2 while the lowest will be in 2025. The number of heart failure hospitalizations shows a trend of change that tends to increase during 2021–2024. Based on gender, male patients dominated visits. The 2025–2028 prediction predicts an increase in the number of patients, with the highest number in male patients and total visits reaching 316,2.: Hospitals can collaborate with local health departments to hold routine screening programs for those at high risk.
Kajian Budaya Atas Kondisi Virtualitas Politik Mutakhir Nurhadi Nurhadi
Jurnal Pendidikan dan Kebudayaan Vol. 14 No. 071 (2008)
Publisher : Badan Standar, Kurikulum, dan Asesmen Pendidikan, Kemendikdasmen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24832/jpnk.v14i071.3093

Abstract

Dunia politik dalam era virtualitas menampilkan dirinya dalam berbagai wujud penampakan: kebenaran, kepalsuan; permukaan, kedalaman; kejujuran, absurditas, esensi, ironi. Diperlukan metafora untuk memahami makna berbagai penampakan politik yang saling bertentangan itu. Makna politik dapat dibentangkan melalui metafora cahaya. Cahaya adalah sesuatu yang memberikan penerangan, semacam pelita yang mengantarkan manusia guna mendapatkan pencerahan. Pencerahan yang dikemukakan dalam buku ini ditampilkan dari tiga sudut pandang kajian, yakni pembahasan permasalahan politik dari segi cultural studies, metode semiotika, dan fenomenologi-hermeneutika. Buku ini merupakan upaya untuk menafsirkan fenomena-fenomena budaya politikterutama aktor-aktor politik-dengan menggunakan ketiga pendekatan tersebut.
Analisis Pengaruh Perubahan Lift Camshaft terhadap Daya dan Torsi pada Motor 4 Langkah 200cc Andhika Novan Ramadhani; Bambang Irawan; Septyana Riskytasari; Nurhadi Nurhadi
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 4 (2025): Agustus : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v3i4.974

Abstract

Camshaft lift is an important parameter that determines the height of the valve lift, calculated from the valve position when it is completely closed to the fully open position. This component plays a crucial role in regulating the flow of the air and fuel mixture into the combustion chamber. This study aims to improve the performance of a 200cc 4-stroke motorcycle engine through camshaft lift modification, which is expected to affect the characteristics of engine torque and power. Modifications were carried out by designing two types of modified camshafts, namely series A and series B, as a comparison to the standard camshaft. The research method used is experimental testing using a dynamometer to measure engine torque and power at various speeds, ranging from 4,000 to 10,000 RPM. The data obtained were analyzed to determine the effect of each type of camshaft on engine performance. The test results show that the B series camshaft provides the most significant performance improvement compared to the standard and A series camshafts. At 7,500 RPM, the standard camshaft produces an average torque of 19.2 Nm, the A series camshaft 19.6 Nm, while the B series camshaft reaches 21.2 Nm. Meanwhile, at 10,000 RPM, the average power of the standard camshaft is recorded at 22.2 HP, the A series camshaft 24.1 HP, and the B series camshaft reaches 26.3 HP. This increase indicates that the camshaft lift modification is able to optimize the duration and height of the valve opening, so that the supply of the fuel and air mixture to the combustion chamber becomes more efficient. Thus, camshaft modification, especially the B series, is an effective and applicable solution in increasing the performance output of a 200cc motorcycle engine without having to make major changes to the overall engine structure.
Pengaruh Lingkungan Kerja dan Work Life Balance terhadap Kepuasan Kerja Karyawan pada PT Bumi Serpong Damai Tbk Tangerang Selatan Esteria Silalahi; Nurhadi Nurhadi; Seno Sudarnomo
JUMBIWIRA : Jurnal Manajemen Bisnis Kewirausahaan Vol. 4 No. 3 (2025): Desember : Jurnal Manajemen Bisnis Kewirausahaan
Publisher : BADAN PENERBIT STIEPARI PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56910/jumbiwira.v4i3.2938

Abstract

This study was motivated by the importance of work environment and work-life balance in improving employee job satisfaction at PT Bumi Serpong Damai Tbk. The purpose of this study was to examine the partial and simultaneous effects of work environment and work life balance on employee job satisfaction at PT Bumi Serpong Damai Tbk. The population and sample for this study consisted of 100 respondents, with a saturated sampling technique used. The results of the study indicate that the work environment has a positive and significant influence on job satisfaction, with a calculated t-value of 5.038 (p < 0.05). Work life balance also has a positive and significant influence, with a calculated t-value of 5.765 (p < 0.05). Simultaneously, both variables significantly influence employee job satisfaction with a calculated F value of 89.787 (p < 0.05) and a variable contribution of 64.9%. These findings emphasize that both factors are crucial for management to consider in efforts to enhance employee job satisfaction. Based on the research results, it is recommended that companies improve workplace conditions by providing adequate facilities and creating a supportive work environment. In conclusion, enhancing a conducive work environment and implementing effective work-life balance are key factors in improving employee job satisfaction at PT Bumi Serpong Damai Tbk, which will positively impact overall company productivity and performance.
PENGARUH JARAK PELAPISAN PADA PROSES THERMAL SPRAY ALUMINIUN (TSA) TERHADAP KEKUATAN IKATAN COATING DAN KETEBALAN LAPISAN PADA BAJA AISI 1020 Ismail, Pitrah Rapi; Sri Hastuti; Catur Pramono; Nurhadi Nurhadi; Wibowo, Rheza Ari; Akhmad Nurdin; Hassany, Ibnu Rosyid Al; Bramono Pandu
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 1 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i1.275

Abstract

Thermal spray arc is a familiar coating method used around 100 years ago. This coating technique was chosen to reduce damage and improve the surface quality of materials with coating bonds that are in direct contact with extreme marine environments. The minimum thickness of the TSA coating is around 100 – 500 µm. According to NACE/AWS/SSPC, a coating layer submerged in seawater will lose 20 µm every year, for a minimum bond strength of 6.89 Mpa. The research aims to analyze the effect of coating distance on AISI 1020 steel. The tests carried out are dry film thickness, pull of adhesive, and bending tests. This research uses distance variations of 150 mm, 250 mm, 350 mm. The research results show that the use of distance has an effect on the bond strength of the layer and the substrate. The best bond strength and bending ability values ​​were found at a distance of 350 mm, with a coating strength of 10.81 Mpa and no bending cracks. Increasing distance variations in the thermal spray process increases bond strength and bending ability.
Analisis Tingkat Kepuasan Agen PERISAI terhadap Regulasi BPJS Ketenagakerjaan (Studi Kasus pada Kantor Cabang Darmo Surabaya) Amelia Cahya Syah Fitri; Nurhadi Nurhadi
Maeswara : Jurnal Riset Ilmu Manajemen dan Kewirausahaan Vol. 3 No. 1 (2025): FEBRUARI : Maeswara : Jurnal Riset Ilmu Manajemen dan Kewirausahaan
Publisher : Asosiasi Riset Ilmu Manajemen Kewirausahaan dan Bisnis Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/maeswara.v3i1.1530

Abstract

This research analyzes the satisfaction level of PERISAI agents regarding BPJS Ketenagakerjaan regulations at the Darmo Surabaya Branch Office. The PERISAI program, launched in 2018, represents a strategic innovation in the agency system to expand membership, particularly in the Non-Wage Recipient (BPU) sector. The study employs a qualitative approach with a case study design, involving participatory observation over four months (September-December 2024), in-depth interviews, and documentation analysis. Results indicate that the PERISAI policy transformation since May 2022, particularly the increase in contribution incentives from 7.5% to 15%, has positively impacted agent motivation. The reward system combining financial and non-financial incentives through gathering programs and point systems proves effective in building loyalty. Success in achieving BPU participant acquisition targets is influenced by agents' ability to develop personal approaches and build local community networks. The integration of digital platforms in acquisition processes and performance monitoring enhances operational efficiency. Capacity development programs through cross-generational communication training and social security fund management provide a strong foundation for PERISAI agents' task execution.
Co-Authors Abdul Haris Abdul Rahman Abdul Rahman Ade Fristy Syahara Adela Friska Putri Agus Hardjito AGUS PRASETIO Agus Siswanto Agustian Agustian Ajeng Tita Negoro Amelia Cahya Syah Fitri Ananda Harum Putri Terate Andhika Novan Ramadhani Andika Angger Nugraha Andreas M. Kuncoro Andri Rachmat Kumalasian Nasution Anisa Rahmawati Anissatul Mufidah Annisa Assajdah Annisa Inka Maulidini Priyanto Ayu Pangestuti Bambang Syaeful Hadi Bramono Pandu Budi Pranoto Burhan Halim Catur Pramono Chatarina Muryani Danang Gunarto Dedi Supriadi Deni Luvi Jayanto Dwi Astutik Eka Nurman Firdaus Elok Rizma Hapsari Endah Retnani Wismaningsih Esteria Silalahi Eva Firdayanti Bisono Fatkhur Rohman Firly Dwi Ainur Rochmah Fitra Fitra Galuh Citraningrum Hassany, Ibnu Rosyid Al Hastuti Hastuti Hemi Wulan Martatiwi Hery Setyawan Hidayat, Andra Dwitama Hidayatu Sholihah Ida Ayu Putu Sri Widnyani Ilyas Husti Irawan Irawan Ismail, Pitrah Rapi Isna Manistasari Joni Devitra Kamelia Aziza Khairuldi Khairuldi Khoirun Nisak Shabira Krisnita Dwi Jayanti listiyono yono listiyono M. Fendy Kussuma Hadi Sufyan Martanto Martosupono Mira Esculenta Martawati Mochammad Muzakki Muhammad Mutafanninun Muhammad Yaasin Mulyadi Mulyadi Nana Tri Sutisna Nimas Auralia Damayanti Novri Gusrial Can Nugroho Nugroho Nurdin, Akhmad NURUL KHOTIMAH Okta Hadi Nurcahyono Okta Hadi Nurcahyono Putri Lestari Rahimudin, Rahimudin Rangga Meulligga Daniarko Riri Irma Suryani Risa Helilintar Rony Irawan Rudolf Sinaga Saifuddin Zuhri Saripuddin Saripuddin Sembiring, Rinawati seno sudarmono Hadi Seno Sudarnomo Septina Galih Pudyastuti Septyana Riskytasari Sevi Oktrianadewi Siany Indria Liestyasari Sigit Pranawa Siti Hadiyati Nur Hafida Soenarto Notosoedarmo Sri Hastuti Sriadi Setywati Suhadi Purwantara Syahrir, Syamsul Syamsul Ph.D M.A. Hadi Sza Sya Monica Valeria Teguh Sutanto Tony Wijaya Ulfa Niswatul Umar Umar Undang Rosidin Usaji Maulana Vicky M. Taufik Wahyu Wijaya Widiyanto Wandra Arasdi Wayan Suana Wibowo, Rheza Ari Yosafat Hermawan Trinugraha Zakki Fuadi Emzain Zen Muttaqin Zenza Wismoyo Ancok