Apple tomatoes with the scientific name Lycopersicum Pyriporme can last 7 days at room temperature and 14 days if stored in the refrigerator. The purpose of this study was to examine the effect of the ELF magnetic field intensity 600 uT and 1000 uT for 30, 60 and 90 minutes on the degree of acidity (pH), density (ρ) and physical quality of apple tomatoes. The research design used was RAL (completely randomized design). Data collection on the pH variable begins with crushing the tomatoes and then measuring the pH value of each fruit using a digital pH meter. The density variable was obtained by weighing the mass of each fruit and dipping the fruit in 150 ml of distilled water as the initial volume, then the difference between the final volume and the initial volume was obtained to obtain the final density of each fruit using the density equation. Physical condition variables can be obtained by counting the number of good fruits and recording each measurement. Observations were made for 20 days with data collection on the 0, 4th, 8th, 16th, and 20th days. The results showed that there were differences in the value of pH, density and physical quality of tomatoes between the control group and the experimental group. Exposure to the ELF magnetic field can affect the activity and reproduction of pathogenic microorganisms in apple tomatoes so as to maintain the pH value, density and physical quality of apple tomatoes.

ABSTRAK. Mahasiswa jurusan pendidikan dituntut tidak hanya memahami suatu konsep materi saja, namun harus memiliki kemampuan multirepresentasi menyelesaikan permasalahan dalam bentuk lain. Analisis dengan tujuan mengetahui pemahaman konsep karakteristik gelombang eleketromagnetik mahasiswa semester 3 pendidikan fisika universitas jember, menggunakan metode penelitian analisis deskriptif. Hasil data diperoleh bahwa responden memiliki kemapuan representasi Verbal senilai 78,5%, lebih tinggi dibandingakan representasi Grafik yaitu 59,9%. Selisih kemampuan representasi Verbal dan representasi Grafik mahasiswa sebesar 18,60%. Dengan demikian, analisis kemampuan multirepresentasi siswa pada materi Karakteristik gelombang elektromagnetik tinggi pada format representasi verbal.

ABSTRAKExtremely Low Frequency (ELF) adalah spektrum gelombang elektromagnetik frekuensi 0-300Hz . Penelitian radiasi dari medan magnet ELF berdampak positif bagi bahan pangan karena bersifat non-ionizing. Tomat  merupakan buah dengan kandungan gizi yang tinggi, namun memiliki masa simpan yang pendek yaitu ± 7-8 hari pada suhu diatas  C. Alternatif cara memperpanjang umur simpan tomat adalah dengan paparan radiasi medan maget ELF. Tujuan penelitian ini adalah untuk menganailis ada atau tidaknya pengaruh ELF pada pH tomat. Sampel yang digunakan adalah tomat berjenis Apel (Lycopersicum Pyriporme). Jenis penelitian yang digunakan adalah penelitian eksperimen laboratorium dan desain penelitian Rancang Acak Lengkap. Sampel berjumlah 180 buah terbagi atas kelompok kontrol  (30 sampel) dan kelompok eksperiman (150 sampel)  dengan perlakuan medan magnet ELF intensitas 600 µT dan 1000 µT selama 30, 60 dan 90 menit. Penelitian dikerjakan selama 20 hari. Pengolahan data dan analisis data dilakukan dengan uji kruskal wallis melalui software IBM Statistic SPSS 23. Kesimpulan hasil yang didapatkan bahwa adanya  pengaruh paparan medan magnet ELF terhadap sampel ditandai dengan perubahan nilai pH akibat aktivitas mikroorganisme patogen dalam tomat yang terganggu. Hal tersebut dibuktikan dengan grafik hasil perubahan pH setiap pengukuran kelompok kontrol sangat tajam perubahannya dibandingkan kelompok eksperimen yang cenderung berubah dengan selisih sedikit.   Kata kunci: radiasi; extremely low frequency; tomat apel (lycopersicum pyriporme) ABSTRACTExtremely Low Frequency (ELF) is a spectrum of electromagnetic waves with a frequency of 0-300Hz. Research Radiation from the ELF magnetic field has a positive impact on foodstuffs because it is non-ionizing. Tomato is a fruit with high nutritional content, but has a short shelf life of ± 7-8 days at temperatures above  C. An alternative way to extend the shelf life of tomatoes is by exposure to ELF magnetic field radiation. The purpose of this study was to analyze the presence or absence of the effect of ELF on tomatoes. The sample used was apple tomato (Lycopersicum Pyriporme). The type of research used is a laboratory experiment research and a completely randomized design research. A total of 180 samples were divided into a control group (30 samples) and an experimental group (150 samples) with the ELF magnetic field treatment with an intensity of 600 T and 1000 T for 30, 60 and 90 minutes. The research was carried out for 20 days. Data processing and data analysis was carried out by using the Kruskal Wallis test using the IBM Statistical SPSS 23 software. The conclusion of the results obtained was that the effect of exposure to the ELF magnetic field on the sample was marked by changes in pH values due to disturbed activity of pathogenic microorganisms in tomatoes. This is evidenced by the graph of the results of changes in pH for each measurement of the control group, the changes are very sharp compared to the experimental group which tends to change with a slight difference. Keywords: radiation; extremely low frequency; apple tomato (lycopersicum pyriporme)

The financial performance seen through the ratio calculation has a relationship to the capital of Islamic banks. Bank Syariah Mandiri as the largest Islamic bank in Indonesia is a benchmark for the Islamic banking industry in Indonesia. The purpose of this study is to see the relationship between financial performance and capital adequacy of Bank Syariah Mandiri. By using secondary data from 2015-2019 and performing classic assumption tests, multiple linear regression tests, and hypothesis testing, the results showed that ROA had no significant effect on CAR. FDR has a significant negative effect on CAR. BOPO has no significant effect on CAR. NIM has no significant effect on CAR. NPF has a significant negative effect on CAR. The results of multiple linear regression analysis simultaneously show that ROA, FDR, BOPO, NIM, NPF simultaneously affect CAR