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"buku ini membahas tentang potensi yang ada di dalam kerak bumu memanfaatkan sifat listrik suatu batuan dan mineral untuk mempelajari bawah permukaan bumi"

"Pendahuluan: Refleksi diri merupakan bagian mendasar dari perkembangan profesionalisme yang dapat dikembangkan melalui proses refleksi diri dalam portofolio, konvensional maupun digital. Penelitian ini bertujuan untuk mengeksplorasi pemanfaatan e-portofolio sebagai instrumen pengembangan kemampuan refleksi diri peserta didik pada program profesi dokter gigi. Metode: Penelitian ini merupakan studi kualitatif dengan desain fenomenologi. Sebanyak enam wawancara mendalam dan lima focus group discussion dilakukan untuk mengeksplorasi persepsi peserta didik dan staf pengajar terkait proses dan pemanfaatan e-portofolio setelah responden melakukan uji coba penggunaan e-portofolio selama 6 minggu. Studi dokumen dilakukan terhadap tulisan refleksi diri pada data backend laman e-portofolio. Hasil penelitian: Responden menilai bahwa e-portofolio sangat bermanfaat dalam perkembangan profesional peserta didik karena dapat membantu peserta didik dalam memahami konten yang direfleksikan, membantu dalam pembelajaran, serta meningkatkan pemahaman tentang refleksi diri. Sebagian besar responden berfokus pada pencapaian keberhasilan sebagai bukti yang dimasukkan dan direfleksikan pada e-portofolio. Penggunaan e-portofolio selama periode uji pilot dan keterampilan refleksi diri peserta didik masih cukup rendah. Beberapa faktor yang meliputi faktor eksternal dan internal teridentifikasi memengaruhi proses dan pemanfaatan e-portofolio pada program profesi dokter gigi. Simpulan: Peran staf pengajar sangat diperlukan dalam mendukung partisipasi dan pemanfaatan e-portofolio reflektif.

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Introduction: Self-reflection is a fundamental part of professionalism development that can be developed through a process of self-reflection in portfolios, conventional and digital. This study aims to explore the use of e-portfolios as an instrument for developing students' self-reflection abilities in undergraduate clinical dentistry program.

Method: This study is a qualitative study with phenomenological design. A total of six in-depth interviews and five focus group discussions were conducted to explore the perceptions of students and faculty members regarding the process and utilization of e-portfolios after a 6-week pilot program. The study document was conducted on students' self-reflection on the backend data of the e-portfolio platform.

Results: Respondents considered that e-portfolio was very useful in students' professional development of students as it helped students to understand the reflected content, assist in learning, and improve understanding of self-reflection. Most respondents focused on achieving success as evidence included and reflected in e-portfolios. The use of e-portfolios during the pilot test period and student self-reflection skills was quite low. Several factors influencing the process and utilization of e-portfolios in undergraduate clinical dentistry, program both external and internal, were identified.

Conclusion: The role of faculty members was important in supporting the participation and utilization of reflective e-portfolios."

"[ABSTRAKUranium merupakan salah satu bahan bakar PLTN. Eksplorasi uranium akan terus meningkat seiring dengan kebutuhan yang meningkat. Metode geomagnet, tahanan jenis dan polarisasi terinduksi dapat diterapkan dalam eksplorasi deposit uranium yang mineralisasinya berasosiasi dengan mineral sulfida. Pengolahan, analisis, dan interpretasi data geomagnet, tahanan jenis, dan polarisasi terinduksi dilakukan untuk dapat mengidentifikasi sebaran deposit uranium, litologi batuan, model geometri dalam 3 dimensi, serta memperkirakan sumber daya terunjuk di daerah Rabau Hulu, Kalan, Kalimantan Barat.Deposit uranium di daerah Rabau Hulu pada umumnya berasosiasi dengan sulfida, turmalin dan terdapat dalam batuan favourable. Gejala mineralisasi uranium dijumpai dalam bentuk-bentuk tidak teratur dan tidak merata terdiri atas mineral uraninit, pirit, kalkopirit, pirhotit, molibdenit, dan ilmenit. Pengolahan data menghasilkan nilai anomali medan magnet total, tahanan jenis, dan faktor logam yang selanjutnya dibuat penampang 2 dimensi. Penentuan nilai tahanan jenis dan polarisasi terinduksi dilakukan dengan mengkorelasi data sumur bor dengan hasil pengolahan data. Tahanan jenis pada zona deposit uranium bernilai kurang dari 2.000 Ωm dan nilai faktor logamnya lebih besar dari 90 mho/m. Zona deposit uranium ini semakin meluas seiring dengan kedalaman. Model 3 dimensi menunjukkan bahwa distribusinya berarah Barat Daya?Timur Laut dan berbentuk lensa. Kadar rata-rata uranium pada zona deposit di daerah Rabau Hulu adalah 0,0085 %. Massa jenis deposit uranium yang digunakan untuk menghitung sumber daya terunjuk adalah 2,83 gr/cm3.

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ABSTRACT

Uranium is one of the nuclear fuel. Uranium exploration will continue to increase along with the increased of demand. Geomagnetic, resistivity and induced polarization methods can be applied in the uranium deposits exploration that mineralization is associated with sulphide minerals. Processing, analysis, and interpretation of geomagnetic, resistivity, and induced polarization data conducted in order to identify the distribution of uranium deposits, lithology, model geometry in 3 dimensions and indicated resource estimates in the area Rabau Hulu, Kalan, West Kalimantan.

Uranium deposits in the area Rabau Hulu is generally associated with sulphides, tourmaline and contained in favorable rocks. Symptoms of uranium mineralization encountered in other forms of irregular and uneven consists minerals of uraninite, pyrite, chalcopyrite, pyrrhotite, molybdenite, and ilmenite. Data processing generates a magnetic field total anomalous values, resistivity, and metal factor which further created two-dimensional cross-section. Determination of resistivity and induced polarization conducted by boreholes to correlate the data with the results of data processing. Resistivity in the uranium deposits zone worth less than 2,000 Ωm and the value of metal factor greater than 90 mho/m. Uranium deposit zone is expanding along with the depth. Three dimensional modeling show that the distribution of deposits trending South West-North East and form lens. The average concentration of uranium in the deposit zone in the area Rabau Hulu is 0.0085%. The density of uranium deposits which are used to calculate the indicated resource is 2.83 g/cm3., Uranium is one of the nuclear fuel. Uranium exploration will continue to increase along with the increased of demand. Geomagnetic, resistivity and induced polarization methods can be applied in the uranium deposits exploration that mineralization is associated with sulphide minerals. Processing, analysis, and interpretation of geomagnetic, resistivity, and induced polarization data conducted in order to identify the distribution of uranium deposits, lithology, model geometry in 3 dimensions and indicated resource estimates in the area Rabau Hulu, Kalan, West Kalimantan.

Uranium deposits in the area Rabau Hulu is generally associated with sulphides, tourmaline and contained in favorable rocks. Symptoms of uranium mineralization encountered in other forms of irregular and uneven consists minerals of uraninite, pyrite, chalcopyrite, pyrrhotite, molybdenite, and ilmenite. Data processing generates a magnetic field total anomalous values, resistivity, and metal factor which further created two-dimensional cross-section. Determination of resistivity and induced polarization conducted by boreholes to correlate the data with the results of data processing. Resistivity in the uranium deposits zone worth less than 2,000 Ωm and the value of metal factor greater than 90 mho/m. Uranium deposit zone is expanding along with the depth. Three dimensional modeling show that the distribution of deposits trending South West-North East and form lens. The average concentration of uranium in the deposit zone in the area Rabau Hulu is 0.0085%. The density of uranium deposits which are used to calculate the indicated resource is 2.83 g/cm3.]"