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All Journal Jurnal Rekayasa Mesin Jurnal Sains Materi Indonesia Dimas: Jurnal Pemikiran Agama untuk Pemberdayaan Jurnal Penelitian Pembelajaran Fisika J-ADIMAS (Jurnal Pengabdian kepada Masyarakat) Jambura Journal of Electrical and Electronics Engineering Jurnal Kependidikan: Jurnal Hasil Penelitian dan Kajian Kepustakaan di Bidang Pendidikan, Pengajaran dan Pembelajaran Advance Sustainable Science, Engineering and Technology (ASSET) Automotive Experiences Journal of Materials Exploration and Findings Pelita: Jurnal Pengabdian kepada Masyarakat Widya Teknik

Irna Farikhah

Universitas PGRI Semarang

Author-ID : 264041

Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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PEMANFAATAN PROJECTED MOTION MEDIA UNTUK MENINGKATKAN PEMAHAMAN KONSEP MAHASISWA PADA MATA KULIAH ILMU PENGETAHUAN BUMI DAN ANTARIKSA (IPBA) Khoiri, Nur; Farikhah, Irna; Sucipto, Untung
Jurnal Penelitian Pembelajaran Fisika Vol 2, No 1/April (2011): JP2F
Publisher : Jurnal Penelitian Pembelajaran Fisika

Show Abstract | Download Original | Original Source | Check in Google Scholar

Ilmu Pengetahuan Bumi dan Antariksa (IPBA) merupakan salahsatu bidang Ilmu yang harus dikuasai oleh calon pendidik di SMPmaupun SMA.Oleh karena itu Program Studi Pendidikan fisika IKIPPGRI Semarang memasukkan salah satu mata kuliah ini untuk dipelajari oleh calon guru. IPBA merupakan ilmu yang membutuhkanpemahaman konsep.Selama ini banyak mahasiswa fisika yang kurangmemahami konsep dalam perkuliahan IPBA karena selama ini dosenhanya menggunakan media konvensional.Oleh karena itu dibutuhkanmedia yang tepat untuk pemahaman konsep IPBA. Salah satu caranyaadalah dengan menggunakan projected motion media.Penelitian ini merupakan penelitian eksperimen.Metode penelitianini dengan adanya uji instrument terlebih dahulu.Lalu instrument diuji cobakan pada kelompok eksperimen. Metode ini menggunakannilai gain untuk mengetahui peningkatan pemahaman konsepmenggunakan media ini.Berdasarkan penelitian, peneliti dapat mengambil kesimpulanbahwa dengan menggunakan projrcted motion media dapatdigunakan sebagai media pemaham konsep.Kata Kunci: Projected Motion Media, Pemahaman Konsep, IPBA

STUDY OF THERMOMECHANICAL EFFECTS OF MAIN CHAIN LIQUID CRYSTAL ELASTOMER AS FUNCTION OF CROSSLINKER CONCENTRATION Irna Farikhah; Yusril Yusuf
Jurnal Sains Materi Indonesia Vol 12, No 2: FEBRUARI 2011
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

STUDY OF THERMOMECHANICAL EFFECTS OF MAIN CHAIN LIQUID CRYSTAL ELASTOMER AS FUNCTION OF CROSSLINKER CONCENTRATION. Thermomechanical effects of dry Main Chain Liquid Crystal Elastomer (MCLCE) with the different concentration of crosslinker 8 %, 12 %, 14% and 16% have been studied. Length of MCLCE monotonically shrinks parallel to the director, while it expands perpendicularly to the director, with a somewhat faster change at nematic isotropic transition phase, Tni. The result of the investigation showed that the value of maximum contraction is greater and faster than maximum expansion.

PEMANFAATAN PROJECTED MOTION MEDIA UNTUK MENINGKATKAN PEMAHAMAN KONSEP MAHASISWA PADA MATA KULIAH ILMU PENGETAHUAN BUMI DAN ANTARIKSA (IPBA) Nur Khoiri; Irna Farikhah; Untung Sucipto
Jurnal Penelitian Pembelajaran Fisika Vol 2, No 1 (2011): APRIL 2011
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/jp2f.v2i1/April.123

Numerical Study on the Effect of Mean Pressure and Loop's Radius to the Onset Temperature and Efficiency of Traveling Wave Termoacustic Engine Endang Dian Rokhmawati; Irna Farikhah; Ummi Kaltsum; Harto Nuroso; Aan Burhanudin; Yuris Setyoadi; Muhammad Amiruddin; Irfan Abd Rahim
Automotive Experiences Vol 3 No 3 (2020)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

The thermoacoustic engine can be a device to convert waste heat energy in the engine car become useful energy such as for charging battery in car or Air conditioner of the car. This work can be done by experimentally and numerically. There are some parameters that have an impact on the performance of the engine. They are geometry of the engines, working fluid, and mean pressure. The performance of the engine depends on the efficiency and the heating temperature. In the car, waste heat energy is not high enough. Therefore, we need to utilize the low heating temperature to be converted into useful energy. This study contributes to numerically the effect of mean pressure and loop’s radius of the regenerator on the onset temperature and the efficiency of traveling wave thermoacoustic engines. The application that is used to solve numerical problems is fortran95. There are two codings that are used in fortran95. They are stability limits and efficiency codes. The lowest onset temperature that achieved is 153˚C with efficiency up to 38.1% that can be reached when the mean pressure is 4.0 MPa and the loop's radius is 5 cm. This result indicated that we can use low heating temperatures from waste heat of engine car to turn on electronics equipment inside the car.

Penyuluhan Identifikasi Potensi Energi Matahari Sebagai Sumber Listrik di SD Negeri Tambakharjo Semarang Adhi Kusmantoro; Irna Farikhah
J-ADIMAS (Jurnal Pengabdian Kepada Masyarakat) Vol 10, No 1 (2022)
Publisher : (STKIP) PGRI Tulungagung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/j-adimas.v10i1.3009

Energi listrik yang digunakan di Indonesia sebagian besar berasal dari pembangkit listrik dengan sumber energi tidak terbarukan. Kebutuhan energi listrik di masyarakat sesuai dengan pertumbuhan jumlah penduduk. Pemakaian sumber ini dengan dalam jangka waktu yang panjang dapat habis. Oleh karena itu untuk meningkatkan pemakaian energi listrik digunakan sumber energi terbarukan. Salah satu sumber energi terbarukan yang melimpah adalah sumber energi matahari, karena wilayah Indonesia terletak pada garis khatulistiwa. Sumber ini dapat diperoleh secara gratis dan tidak menimbulkan dampak lingkungan. Oleh karena itu Tim Pengabdi Universitas PGRI Semarang melakukan identifikasi potensi energi matahari di wilayah keluarahan Tambakharjo, khususnya pada SD Negeri Tambakharjo Semarang. Metode yang digunakan terbagi dua tahapan yaitu tahapan observasi lapangan dan tahapan perencanaan PLTS. Hasil pengukuran maksimal pada jam 11.00 hingga 12.00 sebesar 49.21 Wh. Dengan pengukuran ini menunjukkan bahwa lokasi pengabdian sangat cocok jika digunakan sistem PLTS. Dalam metode perencanaan dihasilkan perhitungan beban 18490 Wh, maka dibutuhkan panel surya 200 Wp sebanyak 18 buah, 16 buah baterai untuk penyimpan energi matahari, dan pengatur arus pengisian baterai dan beban atau SCC 120 A.

Planning of Air Conditioner Cooling Load In The Dean Room Of The Faculty Of Engineering and Information Technology University Of PGRI Semarang Supriyadi, Slamet; Farikhah, Irna; Suhartono, Suhartono
Journal of Materials Exploration and Findings Vol. 1, No. 1
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

The specification of the cooling load or chiller in the FTI UPGRIS dean's room currently requires a review of the distribution of cooling air in the room due to the number of electronics and occupants in the room and the size of the air conditioner. Therefore, the room must be taken into account to prevent insufficient cooling load, As a result, it is impossible to reach the desired temperature and humidity set. The FTI Dean's room has an air conditioner with a cooling capacity of 1 unit. It should be able to cover the amount of cooling in the room. To calculate the cooling load borne by the room of the Dean of the FTI UPGRIS, an analysis of the calculation of the cooling load was carried out to determine the number of cooling units needed to provide sufficient cooling in the Dean Room of the FTI UPGRIS. Data collection techniques obtained from the results of research in the room used quantitative research. quantitative data that the largest load is the sensible load 322753.21 Btu/hr, and the latent load is 47152.52 Btu/hr with the total cooling load 369905.73 Btu/hr + 5% Safety Factor (SF) 388.401.01 Btu/hr at 16.00 WIB. Why does the highest load occur at 13.00 WIB, this is due to the maximum load or the peak of the cooling load in the FTI Dean's room. And in terms of the load density of the FTI Dean's room of 388,401.01 Btu/hr divided by the building area of the FTI Dean's room of 530.76 ft^2, the result is that the cooling load density is 731.78 (Btu/hr) per ft^2. From research in the FTI Dean's room, the result was 113.83 Kwatt. The selection of AC units is adjusted to the size of the room, the larger the room that is cooled in the FTI Dean's room, 2 AC units are installed with a power of 1.5 pk with a capacity of 12,000 Btu/hr.

Analisis Bahan Ajar Fisika Berdasarkan Perspektif Education for Sustainable Development Rina Wijayanti; Fenny Roshayanti; Irna Farikhah; Nur Khoiri; Joko Siswanto
Jurnal Kependidikan: Jurnal Hasil Penelitian dan Kajian Kepustakaan di Bidang Pendidikan, Pengajaran dan Pembelajaran Vol 7, No 2 (2021): June
Publisher : Universitas Pendidikan Mandalika (UNDIKMA)

This study aims to describe the results of the analysis of physics teaching materials for high school energy sources based on the perspective of Education for Sustainable Development (ESD). The research method used is descriptive quantitative research. The population in this study were all materials in physics teaching materials for class XII in Pemalang Regency with samples of energy sources in 5 class XII teaching materials used by teachers in Pemalang Regency. The research instrument was in the form of a text / unit check list analysis based on the ESD indicator to obtain data.The results of the study found that the teaching materials used represented the ESD theme with an average appearance proportion of 21.56%, for the socio-cultural aspects of 8.05%, for environmental aspects 7.53% and 5.98% for economic aspects. From the results of research based on requests to develop ESD-based teaching materials on energy sources.

Socialization and Training of Solar Power Generation (PLTS) at SD Negeri Tambakharjo Semarang Adhi Kusmantoro; Irna Farikhah
Dimas: Jurnal Pemikiran Agama untuk Pemberdayaan Vol 22, No 1 (2022)
Publisher : LP2M of Institute for Research and Community Services - UIN Walisongo

SD Negeri Tambakharjo Semarang uses PLN electricity with low installed power. The school is located in an area that has a total photovoltaic output power and solar radiation intensity of 1,486 Mwh/year and 1953.3 Kwh/m2/year. The average output power per day of photovoltaic (solar panels) in October and November 2021 was 4551 Wh and 3778 Wh. Therefore, the purpose of community service is to socialize the use of solar power plants (PLTS) through learning activities (education) and solar pv training for students and school teachers. The methods used in this activity are divided into three stages. In the first stage, field observations were carried out to find problems related to the availability of electrical energy in schools. In the second stage, the implementation of community service includes the delivery of solar panel material with lectures, demos, and solar power plant system designs in schools. In the third stage, it is the stage of evaluation or feedback by providing questionnaires to participants. The results of this service activity provide information data on understanding of solar panels and batteries in the good category. For practical activities, it needs to be improved to be taught for students in grades 5 and 6, so that solar pv props are indispensable in the school.

Pengembangan Instrumen Tes Critical Thinking Skill Dan Angket Science Motivation Siswa Materi Pesawat Sederhana Sukmawati, Indah; Siswanto, Joko; Farikhah, Irna
Jurnal Penelitian Pembelajaran Fisika Vol 13, No 1 (2022): APRIL 2022
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/jp2f.v13i1.10679

Tujuan penelitian ini adalah mengetahui dan mendeskripsikan validitas instrumen Critical Thinking Skill danÂ Science Motivation siswa materi pesawat sederhana. Penelitian ini dilaksanakan di SMP N 3 Pemalang berupa penelitian pengembangan (R and D) untuk menghasilkan produk baru. Metode pengumpulan data yang digunakan adalah metode kuesioner. Analisis data yang digunakan adalah uji validasi ahli dan praktisi, menganalisis hasil skor angket validasi yang diperoleh dari validator kemudian dianalisis dengan menggunakanÂ formula Aikenâ€™s.Â Â Indeks dengan empat kategori dan 8 validator.Â Indeks penilaian dari ahli dan praktisi selanjutnya dikonsultasikan dengan table Aikenâ€™s V untuk mengetahui valid dan tidaknya item tes dan angket.Â Hasil penelitian menunjukkan bahwa. hasil validasiÂ tes Critical Thinking Skill dengan formula Aikenâ€™sÂ nomor 1 sampai 12 dengan indeks Aikenâ€™s sebesar 0,961.Â SelanjutnyaÂ butir angket Science Motivation nomor 1 sampaiÂ 30 denganÂ indeks Aikenâ€™s sebesar 0,958. Berdasarkan hasil validasi ahli danÂ validasi praktisi dapat disimpulkan bahwa instrumenÂ tes Critical Thinking Skill dan angket Science Motivation dinyatakan valid.Kata kunci: Critical Thinking Skill,Â Science Motivation, Pesawat Sederhana.

Pengenalan PLTS Sebagai Pembangkit Listrik Energi Terbarukan Bagi Siswa dan Guru SD Negeri Kalibanteng Kulon 01 Semarang Kusmantoro, Adhi; Farikhah, Irna; Wardani, Theodora Indriati
J-ADIMAS (Jurnal Pengabdian Kepada Masyarakat) Vol 12, No 1 (2024)
Publisher : (STKIP) PGRI Tulungagung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/j-adimas.v12i1.4926

Dengan semakin bertambahnya penduduk di Indonesia dan perkembangan teknologi maka kebutuhan energi listrik juga mengalami peningkatan. Pada saat sekarang banyak kegiatan atau pekerjaan yang membutuhkan sumber energi listrik. Dengan terputusnya sumber energi listrik maka banyak kegiatan yang terganggu. Namun pembangkit listrik di Indonesia masih menggunakan sumber fosil atau sumber energi tidak terbarukan, yang semakiin lama semakin menipis ketersediaannya. Untuk mengatasi permasalahan tersebut maka penggunaan energi terbarukan pada pembangkit listrik mulai ditingkatkan. Salah satu energi terbarukan yang melimpah di Indonesia adalah energi matahari. Pada kegiatan pengabdian masyarakat di SD Negeri Kalibanteng Kulon 01 Semarang diperkenalkan Pembangkit Listrik Tenaga Surya (PLTS) dengan menggunakan komponen utama panel surya. Tujuannya untuk mengenalkan potensi energi matahari sebagai salah satu energi terbarukan untuk pembangkit listrik. Kegiatan diikuti seluruh Guru dan siswa kelas 6 SD Negeri Kalibanteng Kulon 01 Semarang. Dalam kegiatan tersebut dilaksanakan dengan pemberian materi PLTS di kelas dan demo perangkat PLTS di luar kelas. Dalam melakukan demo dilaksanakan pada jam 9 hingga jam 12 siang, karena pada waktu tersebut iradiasi matahari sangat besar, sehingga terlihat proses konversi dari iradiasi matahari menjadi listrik DC.

Co-Authors Aan Burhanudin Adhi Kusmantoro Aldiansyah, Edo Putra Carsoni Carsoni, Carsoni Endang Dian Rokhmawati FX. Didik Purwosetiyono Hakim, Muhammad Afta Dzikril Harto Nuroso Hasto, Ken Imadudin Harjanto Irfan Abd Rahim Joko Siswanto Joko Siswanto Margono Margono Muhammad Amiruddin Muhammad Amiruddin Nur Khoiri Nur Khoiri Nur Khoiri Rahim, Irfan Abd Ramadhani Saputra, Ananta Rina Wijayanti Rokhmawati, Endang Dian Setyoningsih Wibowo Sigit Ristanto Slamet Supriyadi Solly Aryza Spuriyadi, Slamet Sukmawati, Indah Ummi Kaltsum Untung Sucipto Wardani, Theodora Indriati Yuris Setyoadi Yuris Setyoadi Yusril Yusuf

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