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Effect of turbo cyclone vane angles on performance and emissions of a 1000 cc engine Monasari, Ratna; Qosim, Nanang; Jaya, Kukuh Laksana; Pratama, Argiansyah Bayu
Jurnal Polimesin Vol 23, No 4 (2025): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i4.7075

Abstract

The installation of a turbo cyclone in the intake manifold aims to increase airflow turbulence, thereby improving the air–fuel mixture process inside the combustion chamber. This study investigates the effects of turbo cyclone implementation on the performance, fuel consumption, and exhaust emissions of a 1000 cc engine. The cyclone was designed with six fixed vanes at angles of 30°, 45°, and 60°, and tested using two fuels: RON 90 and RON 92. Engine performance was measured with a dynamometer across 1000–6000 rpm, fuel consumption was evaluated using Specific Fuel Consumption (SFC), and exhaust emissions were analyzed with a gas analyzer. Results indicate that the 60° vane angle delivers the best overall performance, achieving a maximum power of 34.1 HP, peak torque of 57.4 Nm, and the lowest SFC of 93.33 g/kWh. Additionally, CO and HC emissions were reduced by up to 40% compared to the baseline (non-cyclone) condition. Among the tested fuels, RON 92 consistently provided better performance and lower emissions, highlighting its higher combustion efficiency. These findings demonstrate that the turbo cyclone (particularly at a 60° vane angle) effectively improves engine efficiency, enhances output, and reduces harmful emissions.
Gotong Royong Economy: Strengthening Islamic Values Through Local Traditions Qosim, Nanang; Ansori, Ansori; Masduqie, Muhammad Hamdan Ali
Proceedings of Annual Conference for Muslim Scholars Vol 8 No 1 (2024): AnCoMS, Oktober 2024
Publisher : Koordinatorat Perguruan Tinggi Keagamaan Islam Swasta Wilayah IV Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36835/ancoms.v8i1.555

Abstract

This article examines the concept of gotong royong economy as a manifestation of Islamic values strengthened through Indonesian local traditions. This research uses a qualitative approach with literature study and content analysis methods to explore the intersection between Islamic economic teachings and the practice of gotong royong in Indonesian society. The results of the analysis reveal that the implementation of a gotong royong economy can strengthen social cohesion, improve shared prosperity, and create a more just and inclusive economic system. The article also identifies some challenges in implementing the gotong royong economic model in the modern era, and offers recommendations to actualize this concept in the context of contemporary economic development. In conclusion, the gotong royong economy offers a unique paradigm in combining Islamic values with local wisdom, providing a strong foundation for the development of an economic system that is not only efficient, but also harmonious with Indonesia's spiritual and cultural values
The Impact of Digital Nomad Economy on Local Businesses Study of MSME Market Changes in Popular Destinations in Indonesia Qosim, Nanang; Rukmana, Arief Yanto; Usup, Usup
The Eastasouth Journal of Social Science and Humanities Vol. 2 No. 02 (2025): The Eastasouth Journal of Social Science and Humanities (ESSSH)
Publisher : Eastasouth Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/esssh.v2i02.474

Abstract

This study examines the impact of the digital nomad economy on micro, small, and medium enterprises (MSMEs) in popular destinations in Indonesia, including Bali, Yogyakarta, and Lombok. Using a quantitative research approach, data were collected from 120 MSME owners and managers through a structured questionnaire measured on a 1-5 Likert scale. The findings, analyzed with SPSS version 25, reveal that the digital nomad economy creates significant opportunities for MSMEs, including revenue growth, an expanded customer base, and improved service quality. However, challenges such as increased competition, gentrification, and technological barriers were also identified. Regression analysis showed that adaptation strategies, customer engagement, and perceived challenges significantly influence business performance. This study underscores the need for capacity-building initiatives, inclusive growth policies, and enhanced access to technology to ensure sustainable benefits from the digital nomad economy for local MSMEs.
Faktor Determinan Performa Kerja Karyawan di Industri Garmen Nasional Cakranegara, Pandu Adi; Qosim, Nanang; Wibowo, Rendi; Ambarwati, Retnoning; Setyawan, Antonius Ary; Widjayanti, Carolina Ety; Nuzulia, Siti; Damanik, Darwin
Jurnal Kewarganegaraan Vol 6 No 3 (2022): October 2022
Publisher : UNIVERSITAS PGRI YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31316/jk.v6i3.3776

Abstract

AbstrakBanyaknya jumlah karyawan produksi disuatu industry menjadi suatu tantangan bagi karyawan pekerja kantoran dalam mengontrol dan menjaga kualitas dan kuantitas hasil produksi dan juga harus menjaga kinerja kerjanya supaya tetap mendapatkan hasil yang maksimal. Tujuan utama dari penelitian ini adalah untuk mengetahui dan menganalisis pengaruh kepemimpinan, motivasi kerja, dan stress kerja terhadap kinerja karyawan Perusahaan di KBN Cakung. Dengan menggunakan pendekatan kuantitatif dengan 100 responden yang merupakan sampel jenuh yaitu seluruh pekerja karyawan pekerja kantoran di Perusahaan. Penulis juga menggunakan nonprobability sampling dengan purposive sampling. Peneliti menggunakan teknik analisis Metode pre test yang dilakukan kepada 30 responden, dan Metode Main test meliputi uji validitas, uji reliabilitas, uji normalitas, uji multikolinieritas, uji heteroskedastisitas, uji regresi linear berganda, dan uji hipotesi. Hasil penelitian menunjukkan bahwa kepemimpinan dan motivasi kerja tidak berpengaruh signifikan terhadap kinerja karyawan, dan stress kerja berpengaruh signifikan terhadap kinerja karyawanKata Kunci: Kepemimpinan, Motivasi Kerja, Stres Kerja, Kinerja Karyawan AbstractThe large number of production employees in an industry becomes a challenge for office workers in controlling and maintaining the quality and quantity of production, and also maintain their work performance in order to keep getting maximum results. The main purpose of this study was to determine and analyze the effect of leadership, work motivation, and job stress to performance of employees at Perusahaan at KBN Cakung. By using a quantitative approach with 100 respondents who are saturated samples, namely all office workers at Perusahaan. The author also uses nonprobability sampling with purposive sampling. The researcher used analysis technique. The pre-test method was conducted on 30 respondents, and the Main test method included validity test, reliability test, normality test, multicollinearity test, heteroscedasticity test, multiple linear regression test, and hypothesis testing. The results show that leadership and work motivation have no significant effect on performance of employees, and work stress has a significant effect on performance of employees.Keyword: Leadership, Work Motivation, Job Stress, Performance Of Employees
Manajemen Pesantren Terhadap Pengembangan Program Tahfidz di Pondok Mahasiswi Hafshawaty Genggong Probolinggo Hamid, Abdul; Qosim, Nanang; Najiah, Layli
Jurnal Kewarganegaraan Vol 6 No 2 (2022): Desember 2022
Publisher : UNIVERSITAS PGRI YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31316/jk.v6i2.4025

Abstract

AbstrakManajemen Pesantren terhadap perkembangan Tahfidzul Qur’an menuntut asatidzah untuk kreatif, menyenangkan serta memiliki kemampuan mengembangkan pendekatan  dam  memilih  metode  pembelajaran  yang  efektif.  Hal ini penting terutama untuk  menciptakan  iklim  pembelajaran  yang kondusif dan  menyenangkan.  Cara  asatidzah  melakukan suatu kegiatan pembelajaran memerlukan pendekatan dan metode yang berbeda dengan pembelajaran lainnya. Dalam Tujuan penelitian ini adalah ingin mengetahui bagaimana perencanaan dan pelaksanaan program Tahfidzul Qur’an di pondok mahasiswi hafshawaty Ingin mengetahui bagaimana sistem penilaian program  tahfidzul Qur’an di pondok mahasiswi hafshawaty. Metode Penelitian ini adalah penelitian lapangan (Field Research). Pendekatan yang digunakan adalah deskriptif kualitatif. Tempat penelitian ini dilakukan di Pondok Mahasiswi Hafshawaty Genggong kecamatan Pajarakan, kabupaten Probolinggo. Adapun informasinya yaitu kepala pondok, pengasuh santri, ketua tahfidz (asatidzah pembimbingTahfidzul Qur’an. Teknik pengumpulan data dalam penelitian ini wawancara yang mendalam, kemudian ditunjang pula dengan observasi dan dokumentasi.Hasil penelitian dari peneliti tersebut, bisa dilihat dari proses hafalan interaksi santri dari sumber belajar pada suatu lingkung, menentukan materi dari tahfidz murni, SLTA,SLTP, dan juga tahfidz mahasiswi  Jadi pelaksanaan pengajar adalah interaksi guru dengan santri dalam rangka menyampaikan bahan pelajaran kepada santri dan untuk mencapai tujuan pengajaran. Dalam sistem penilaian, menentukan aspek nilai dalam segi kelancaran, tajwidnya, makhroj, tartila, kedisiplinan dan kesopanan di antara segi aspek penilaian ini santri dikhususkan untuk mengikuti apa yang sudah menjadi ketentuan-ketentuan pondok.Kata Kunci : Manajemen Pesantren, Program TahfidzAbstractIslamic Boarding School management towards the development of Tahfidzul Qur'an requires asatidzah to be creative, fun and have the ability to develop approaches and choose effective learning methods. This is especially important to create a conducive and fun learning climate. The way asatidzah conducts a learning activity requires a different approach and method from other learning. The purpose of this study was to find out how the planning and implementation of the Tahfidzul Qur'an program at the hafshawaty female student lodge. This research method is a field research (Field Research). The approach used is descriptive qualitative. The place of this research was carried out at the Hafshawaty Genggong Student Boarding School, Pajarakan sub-district, Probolinggo district. The information is the head of the boarding school, the nanny of the santri, the head of the tahfidz (asatidzah supervising Tahfidzul Qur'an. The data collection techniques in this study were in-depth interviews, then supported by observation and documentation. The results of the research from these researchers, can be seen from the process of memorizing the interaction of students from learning resources in an environment, determining the material from pure tahfidz, high school, junior high, and also student tahfidz. to achieve teaching goals. In the assessment system, determining the value aspects in terms of fluency, recitation, makhroj, tartila, discipline and politeness among these aspects of the assessment, students are devoted to following what has become the provisions of the cottage.Keywords :Islamic Boarding School Management, Tahfidz , Program
Sosialisasi Fikih Wanita bagi Remaja Desa Balonggemek, Megaluh, Jombang Hidayah, Nurul; Qosim, Nanang; Pangestu, Noval; Ardiansyah, Al Bustomy; Maulidiyah, Ersa Risma; Chamimah, Siti Nur
Jumat Keagamaan: Jurnal Pengabdian Masyarakat Vol. 6 No. 1 (2025): April
Publisher : LPPM Universitas KH. A. Wahab Hasbullah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32764/abdimasagama.v6i1.4496

Abstract

Thoharah is a problem that is often ignored, especially among the public. Not a few of them ignore it. Therefore, there is a need for regular outreach on this issue, especially regarding menstruation, postpartum and istihadzah. This socialization can provide knowledge and strengthen knowledge in society, especially for teenagers who are growing up. The method used to realize this goal is the Asset Based Community Development (ABCD) theory, which prioritizes the utilization of assets and potential owned by the community and then used as empowering material. The results of this activity are new insights into the science of feminine jurisprudence for teenagers in the Balonggemek environment. Apart from that, the teachings of jurisprudence are embedded in everyday life. The most important thing is the growing awareness of learning about feminine jurisprudence. Keywords: Socialization, Women's Jurisprudence, Teenagers, Balonggemek.
Analisa Kebulatan pada Proses Drilling Material KFRP Mufarrih, Am; Harijono, Agus; Amrullah, Utsman Syah; Qosim, Nanang; Emzain, Zakki Fuadi
Jurnal Mesin Nusantara Vol 5 No 2 (2022): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v5i2.19472

Abstract

Proses drilling merupakan proses pemesinan yang paling banyak digunakan di industri otomotif dan manufaktur. Kinerja proses drilling pada material Komposit KFRP bisa diukur dengan karakteristik kualitas seperti kekasaran permukaan, burr height, kebulatan, konsumsi daya, gaya tekan dan delaminasi. Penelitian ini bertujuan untuk mengetahui pengaruh variasi variabel bebas sudut ujung pahat dan kecepatan makan terhadap variabel respon kebulatan. Rancangan percobaan menggunakan metode full faktorial yang berupa orthogonal array L9 dengan replikasi sebanyak dua kali. Variabel bebas yang divariasikan adalah sudut ujung pahat (100°, 118°, 140°) dan kecepatan makan (50 mm/menit, 115 mm/menit dan 180 mm/menit). Variabel respon yang diamati adalah kebulatan. Proses drilling dilakukan menggunakan mesin CNC Milling. Pahat yang digunakan adalah twist drill HSS Nachi diameter 10 mm. ANOVA digunakan untuk mengetahui variabel-variabel bebas yang memiliki pengaruh signifikan terhadap variabel respon yang diamati. Hasil penelitian menunjukkan bahwa sudut ujung pahat dan kecepatan makan berpengaruh signifikan terhadap respon kebulatan. Peningkatan sudut ujung pahat dan kecepatan makan akan meningkatkan penyimpangan kebulatan, sehingga agar diperoleh profil kebulatan yang baik, maka perlu menggunakan sudut ujung pahat yang kecil serta kecepatan makan yang rendah.
Co-Authors . Syamsulbahri A. Hanif Firdaus Abd Kadir, Abd Abdul Hamid Abdul Kadir Adfar, Mohamad Afif Kholisun Nashoih Agus Harijono Agus Setiawan Ahmad Hanif Firdaus Ainol Ainol, Ainol Akhmad Akhmad Akhmad, Akhmad Al Idrus, Albar Al Idrus, Thalhah Ali Sai’in AM MUFARRIH AM Mufarrih Ambarwati, Retnoning Amrullah, Utsman Syah Amrullah, Utsman Syah Andre Kurniawan Andre Kurniawan Anggita, Sharazita Dyah ansori ansori Apri Wiyono Ardiansyah, Al Bustomy Arifin, Hasmia Melati Asgar, Adita Nursyarifa Astuti, Fina Andika Frida Azka, Ahmad Ridlo A’yun , Nurul Barkah Fitriyana Buhori, Imam Cakranegara, Pandu Adi Chairil Afandy Chamimah, Siti Nur Damanik, Darwin Dian Kusuma Wardani Didik Suhariyanto Djalamang, Zulfikar Jakaputera Emzain, Zakki F Esianta, Esianta Evawarta I Pagisi Fachry Abda El Rahman Farida, Nike Nur Fataa Kusumattaqiin Fatahul Arifin Fatkhullah, Fatkhullah Fillah , Muhammad Mahbub Fina Andika F. A. Fitrianingrum, Rini Fitriyana, Barkah Gulom, Muhamad Gumono Gumono Harijono, Agus Hariyanto, Moh. Nasir Hasan Hasan Hazin, Burhan Ibnu Hermawansyah, Angga himmatul Aliyah, himmatul Huang, Shyh-Chour husnah, Rif'atul imasinska, imasinska Jailani Jasman Jasman Jaya, Kukuh Laksana Judijanto, Loso Kamal, Kamal Labandingi Latoki Lailiya, Izza Lassandy, Marthan Lutfi Hakim Maemunah Maemunah Marthan Lassandy Masduqie, Muhammad Hamdan Ali Mathoriyah, Lailatul Maulid Sakaria Maulidiyah, Ersa Risma Melyana Nurul Widyawati Mochammad Yunus, Mochammad Moh. Hartono Moh. Nasir Hariyanto Monasari, Ratna Muhammad Faisal Murdanto, Putut Mursito, Bambang Najiah, Layli Nasihun Amin Nugroho, Pipit Wahyu Nur Ahid Nur Hayati Nurapiah Nurapiah, Nurapiah NURUL HIDAYAH Pamungkas, Putra M Pangestu, Noval Pratama, Argiansyah Bayu Pratomo, Wanda Putra M Pamungkas PUTRI WULANDARI Raharjo, Nain D Rahman, Zayad Abd Rangga E. Santoso Ratna Monasari Ratna Monasari Regar, Erfendi Remon Lapisa Rezal, Mohammad Ridwan, Ridwan Rifqi, M. Ziad Rizal, Syaifuddin Rr. Poppy Puspitasari Rukhayati Rukmana, Arief Yanto Sadili, Sadili Sadimin Sadimin Sakaria, Maulid Salikun Salikun, Salikun Saparman, Saparman Sarsono Sarsono Setyawan, Antonius Ary Sholahuddin, Muhammad Faishol Siti Nuzulia, Siti Solehudin, Sollah Sollah Solehudin Sujarwadi, Sujarwadi Sulur Joyo Sukendro Syamsul Bahri Biki Syamsul Hadi Umar Salim, Firza Usup, Usup Utami, Eva Yuniarti Vinasti, Vinasti Wanda Pratomo Wibowo, Rendi Widjayanti, Carolina Ety Win, Sein Laer Yi Wulandari, Kharismana Umia Yang, Yu-Sheng Yanuar Mahfudz Safarudin Yasin, Muhamad Yuniarto Agus Winoko, Yuniarto Agus Yusuf Dewantoro Herlambang Zainal Abadi Zakki Fuadi Emzain Zikri, Moh