Analisis Kinerja Mahasiswa dalam Praktikum Isolasi Dna

Praktikum merupakan fitur penting dalam pendidikan sains. Praktikum membantu pelajar untuk mengembangkan pemahaman tentang sains, menghargai bahwa sains itu berdasarkan bukti, dan melalui praktikum pelajar dapat memperoleh keterampilan hands-on secara langsung. Penelitian bertujuan untuk mengeksplorasi kinerja praktikum dari 26 orang mahasiswa Program Studi Pendidikan Biologi pada salah satu LPTK swasta di Kota Pekanbaru dalam praktikum mengisolasi DNA bakteri Escherichia coli. Instrumen penelitian berupa rubrik kinerja praktikum yang disusun berdasarkan tahapan kerja dalam mengisolasi DNA dengan Fasilitas praktikum yang terbatas. Rubrik kinerja praktikum terdiri dari tiga aspek (persiapan praktikum, pelaksanaan praktikum, dan kegiatan akhir praktikum). Ketiga aspek tersebut diuraikan menjadi delapan sub-aspek yaitu perlengkapan keselamatan, rancangan praktikum, penggunaan sentrifus, penggunaan vortex, penggunaan pipet mikro dan tip, pengambilan bahan kimia/reagen, partisipasi selama praktikum, dan penutup praktikum. Data skor kinerja dikumpulkan dengan metode observasi terhadap aktivitas mahasiswa selama praktikum berlangsung dengan menggunakan rubrik kinerja tersebut. Skor kinerja dikonversikan ke dalam bentuk persentase lalu diinterpretasikan menjadi kinerja praktikum berdasarkan kategori yang ditetapkan. Berdasarkan hasil analisis data diperoleh rerata persentase kinerja praktikum mahasiswa pada topik isolasi DNA sebesar 97,23% dengan kriteria ‘sangat baik'

Study of Sangihe-Filipino Fishermen Activity in Bitung City, North Sulawesi, Indonesia

The study was conducted in the coastal area of Lembeh Strait, Bitung City, North Sulawesi, Indonesia. Seven districts comprised the test site. The aim of this research was to analyze the activity of fishermen of Sangihe-Filipino descent (Sa-Fi) by multiple regression analysis. Primary data concerning fishing activities of Sa-Fi Fishermen was obtained through interview techniques, questionnaires and field observation. Activity values ​​(Y) show a factor of fishing activities (Xn) which allegedly affect the fishermen activities. These results indicated that the activity of Sa - Fi fishermen affected by the language that they use in carrying out life as a fisherman in Bitung City. Old fishermen settled in Bitung correlated with fishing knowledge. Sa-Fi fishermen fishing knowledge correlated with the number of dependents and income of fishermen families. Sa-Fi fishermen's income is correlated with their spending. Penelitian dilakukan di wilayah pesisir Selat Lembeh Kota Bitung pada 7 kecamatan sebagai lokasi penelitian, untuk menganalisis aktivitas nelayan keturunan Sangihe-Filipina (Sa-Fi) dengan analisis regresi berganda. Data primer mengenai aktivitas nelayan Sa-Fi diperoleh melalui teknik wawancara, penyebaran kuesioner dan observasi lapangan. Nilai aktivitas (Y) menunjukkan faktor kegiatan penangkapan ikan (Xn) yang diduga berpengaruh terhadap aktivitas nelayan. Hasil penelitian ini menunjukkan bahwa aktivitas nelayan Sa-Fi dipengaruhi oleh bahasa yang mereka gunakan dalam menjalankan kehidupannya sebagai nelayan di Kota Bitung. Lama menetap nelayan Sa-Fi di Kota Bitung berkorelasi dengan pengetahuan menangkap ikan. Pengetahuan menangkap ikan nelayan Sa-Fi berkorelasi dengan jumlah tanggungan keluarga dan pendapatan nelayan. Pendapatan nelayan Sa-Fi berkorelasi dengan pengeluaran nelayan

Relationship Between Diet and Physical Activity with the Event of Anemia in Pregnant Women

The prevalence of anemia in pregnant women is 41.8 % . The causes of anemia in pregnancy include gravida, age, parity, education level, economic status and compliance with Fe tablet consumption, diet and physical activity. The purpose of this study was to determine the relationship between diet and physical activity with the incidence of anemia in pregnant women at Batunadua Health Center, Padangsidimpuan City in 2021 . The type of research is quantitative research with a cross sectional approach study . The population in this study were all pregnant women at Batunadua Health Center Padangsidimpuan City as many as 229 people. The sample in this study were 70 pregnant women at Batunadua Public Health Center, Padangsidimpuan City using random sampling method . The analysis used is Chi Square and Kolmogorov-Smirnov test . The results of this study indicate that there is a relationship between diet ( p=0.000) , and physical activity ( p=0.000) with the incidence of anemia in pregnant women. The conclusion is that diet and physical activity have a relationship with the incidence of anemia in pregnant women. Suggestions for pregnant women to increase antenatal care visits and find out about the incidence of anemia in pregnancy

Last appearance of Homo erectus at Ngandong, Java, 117,000–108,000 years ago

Homo erectus is the founding early hominin species of Island Southeast Asia, and reached Java (Indonesia) more than 1.5 million years ago1,2. Twelve H. erectus calvaria (skull caps) and two tibiae (lower leg bones) were discovered from a bone bed located about 20 m above the Solo River at Ngandong (Central Java) between 1931 and 19333,4, and are of the youngest, most-advanced form of H. erectus5,6,7,8. Despite the importance of the Ngandong fossils, the relationship between the fossils, terrace fill and ages have been heavily debated9,10,11,12,13,14. Here, to resolve the age of the Ngandong evidence, we use Bayesian modelling of 52 radiometric age estimates to establish—to our knowledge—the first robust chronology at regional, valley and local scales. We used uranium-series dating of speleothems to constrain regional landscape evolution; luminescence, 40argon/39argon (40Ar/39Ar) and uranium-series dating to constrain the sequence of terrace evolution; and applied uranium-series and uranium series–electron-spin resonance (US–ESR) dating to non-human fossils to directly date our re-excavation of Ngandong5,15. We show that at least by 500 thousand years ago (ka) the Solo River was diverted into the Kendeng Hills, and that it formed the Solo terrace sequence between 316 and 31 ka and the Ngandong terrace between about 140 and 92 ka. Non-human fossils recovered during the re-excavation of Ngandong date to between 109 and 106 ka (uranium-series minimum)16 and 134 and 118 ka (US–ESR), with modelled ages of 117 to 108 thousand years (kyr) for the H. erectus bone bed, which accumulated during flood conditions3,17. These results negate the extreme ages that have been proposed for the site and solidify Ngandong as the last known occurrence of this long-lived species