Salmonella typhi is a bacterium that causes salmonellosis which is a serious disease in Indonesia and is still endemic. Until now, the treatment and handling of cases of bacterial infection are still using antibiotics. The comparison of antibacterial effectiveness using turmeric extract, a ginger extract which is a natural ingredient with the antibiotics Ampicillin and Ciprofloxacin on Salmonella typhi isolates from hospital waste and household waste has been conducted. The purpose of this research is to compare the antibacterial effectiveness of Curcuma longa (turmeric) extract, Zingiber officinale (Ginger) extract, Ampicillin, and Ciprofloxacin antibiotics in inhibiting the growth of Salmonella typhi which are isolated from hospital waste and those isolated from household waste. This research is experimental research (experimental), using a control group and the research is carried out in a laboratory. The data collection technique was carried out by measuring the inhibition zone. Size of the inhibition zone of hospital isolates after treated by turmeric and ginger extract is smaller than household isolates. This result indicates that excessive usage of antibiotics will be able to increase the resistance or immunity of Salmonella typhi. Substances which are contained in turmeric and ginger extracts have ability to inhibit the growth of Salmonella typhi, with strong category against hospital isolates and very strong category against household isolates. It is concluded that turmeric and ginger extracts are able to    substitute synthetic antibiotics such as Ampicillin.

ABSTRAKTujuan penelitian ini adalah untuk mengetahui efektifitas penggunaan media poster 3 dimensi secara daring pada materi tata surya berbasis Google Classroom guna meningkatkan pemahaman konsep fisika siswa kelas VII SMPN 1 WERA. Penelitian ini berupa penelitian True eksperimental dasing pre-test dan post-test. Populasi penelitian adalah siswa kelas VII SMPN 1 WERA yang berlokasi di Desa Tawali, Kec. Wera, Kab. Bima, NTB. Pembelajaran yang digunakan ialah yang tidak menggunakan media poster 3 dimensi secara daring untuk kelas kontrol, untuk kelas eksperimen menggunakan media poster 3 dimensi secara daring. Sampel penelitian ialah kelas VII-1 sebagai kelas eksperimen dan kelas VII-2 sebagai kelas kontrol. Ada tiga tahap teknik pengumpulan data, yaitu tahap persiapan, tahap menentukan kemampuan awal sampel, dan tahap pelaksanaan tindakan. Instrumen penelitian berupa tes objektif, yakni uji validitas, uji realiabilitas, uji tingkat kesukaran, dan uji daya pembeda. Teknik analisis data yang digunakan ialah uji persyaratan analisis meliputi uji homogenitas dan uji normalitas. Serta uji hipotesis berupa uji-t. Diperoleh hasil perhitungan uji-t, pre-test thitung =0,332 dan ttabel =1,682 (thitung  < ttabel). Berarti hipotesis nol (Ho) diterima dan hipotesis alternatif (Ha) ditolak. Menandakan tidak ada perbedaan kemampuan awal siswa. Nilai post-test thitung =2,744 dan ttabel=1,682 (thitung  > ttabel) berarti (Ho) ditolak dan (Ha) diterima. Hasil analisis nilai uji N-gain; kelas eksperimen sebesar 0,44 berkategori “sedang” dan kelas kontrol 0,22 berkategori “rendah”. Akhirnya diperoleh bahwa efektifitas penggunaan Media Poster 3 Dimensi secara daring pada Materi Tata Surya berbasis Google Classroom dapat meningkatkan pemahaman konsep fisika siswa Kelas VII SMPN 1 WERA Tahun pelajaran 2019/2020. Kata kunci : efektifitas penggunaan media poster 3 dimensi secara daring; pemahaman konsep  ABSTRACTThe purpose of this study was to determine the effectiveness of the use of online 3-dimensional poster media on Google Classroom-based solar system material in order to improve understanding of the physics concepts of class VII students of SMPN 1 WERA. This research is in the form of true experimental research of pre-test and post-test. The study population was the VII grade students of SMPN 1 WERA located in Tawali Village, Kec. Wera, Kab. Bima, NTB. The lessons used are those that do not use online 3-dimensional poster media for the control class, for the experimental class using 3-dimensional poster media online. The research sample was class VII-1 as the experimental class and class VII-2 as the control class. There are three stages of data collection techniques, namely the preparation stage, the stage of determining the initial capacity of the sample, and the stage of implementing the action. The research instrument was an objective test, namely the validity test, the reliability test, the difficulty level test, and the discriminating power test. The data analysis technique used is the analysis requirements test including the homogeneity test and normality test. As well as hypothesis testing in the form of t-test. Obtained the results of t-test calculations, pre-test t = 0.332 and t table = 1.682 (t count <t table). It means that the null hypothesis (Ho) is accepted and the alternative hypothesis (Ha) is rejected. This indicates that there is no difference in students' initial abilities. The post-test value t = 2.744 and t table = 1.682 (tcount> ttable) means (Ho) is rejected and (Ha) is accepted. The results of the analysis of the N-gain test value; the experimental class was 0.44 in the "medium" category and the control class was 0.22 in the "low" category. Finally, it was found that the effectiveness of using online 3-dimensional Media Posters on Google Classroom-Based Solar System Material can improve understanding of the physics concepts of Class VII students of SMPN 1 WERA in the 2019/2020 academic year. Key words: the effectiveness of using online 3-dimensional poster media; understanding the concept.