The inertial frame dragging effect of rotating neutron star has been studied. Inertial frame dragging effect, also well known as Lense Thirring effect, has been predicted using general theory of relativity in 1918. When the neutron star rotates very quickly, the space time around it will be dragged to the direction of the rotation. The Lense Thirring effect is small enough for small objects so it will be clearly seen for massive objects like compact stars, especially neutron star. Later, we derive the equation of frame dragging rate () inside the rotating neutron star, which is axisymmetrik and stationary. Frame dragging rate is decreasing from the center to the surface of stars. It is also noted that is proportional to the angular velocity of star.
This study aims to test the temperature sensor that will be used in the biochar production furnace. Temperature testing is carried out to determine the ability of the sensor to respond to temperature changes that will be applied to the furnace. The sensors used in this system are the K-type thermocouple and the MAX6675 module. Testing is done by forming a control system. The system will be installed in the furnace by providing heating with fire in the furnace. The result of the maximum temperature was 574.25 °C at 575 seconds of heating for 1110 seconds. The test of corelation between the sensor output voltage to temperature when the temperature is raised from the beginning to the maximum, the sensor sensitivity is obtained at 5.1762 mV / °C and the slope of the graph is close to 1. Testing the relationship of the sensor output voltage to temperature when the temperature is lowered from the maximum point, the sensor sensitivity is obtained at 4.878 mV / °C and an offset voltage of 25 mV. The voltage-to-time correlation of the two tests is close to the value of 1, which means that the sensor linearity is very good so that it can be used as a temperature measurement tool.
Water resources are important for the community because water is a basic need for living things, including humans. The increasing human population and rapid infrastructure development have led to a very high demand for clean water. On the other hand, environmental pollution and global warming have caused sources of clean water on the surface to continue to decrease. It is necessary to explore subsurface groundwater to meet the need for clean water. This study aims to determine the distribution and depth of the aquifer layer, which has the potential to store groundwater reserves. The method used in this research is the geoelectrical resistivity method with schlumberger configuration. Data acquisition was carried out at 16 line with a length of each line is 200 m. Data processing is done using Res2Dinv software and Surfer software. From the results of the study, it can be concluded that from the 16 geoelectric line used, the aquifer layer which can be interpreted as containing groundwater is located between 1035'50' ' -1036'40'' South Latitude and 103030'50'' -104031'40'' East Longitude towards the south with a depth of 50 -100 meters.
Penulisan tugas akhir menjadi kewajiban setiap mahasiswa sebelum menyelesaikan masa studinya. aplikasi yang sering digunakan dalam penulisan adalah Microsoft Word. Beberapa mahasiswa masih terlalu asing dalam menggunakan fitur-fitur advanced dalam Microsoft Word. Selain itu, dalam penulisan tugas akhir membutuhkan referensi sebagai tinjauan pustaka tentang topik penelitian yang dipilih. Beberapa mahasiswa masih mengalami kesalahan dan kebingungan dalam menulis daftar pustaka dan menulis kutipan secara rapi di tulisannya. Oleh karena itu, dilakukan kegiatan pengabdian kepada masyarakat oleh tim dosen prodi fisika Universitas Jambi dengan tema “Peningkatan Advanced Skill pada Fitur Microsoft Word dan Software Mendeley untuk Membantu Mahasiswa dalam Penyusunan Tugas Akhir”. Program pengabdian ini ditujukan untuk mahasiswa di lingkungan Fakultas Sains dan Teknologi. Metode kegiatan yang dilakukan berupa workshop pemaparan materi dan diikuti dengan bimbingan intensif kepada beberapa mahasiswa. Kegiatan workshop dilakukan secara daring pada tanggal 5 September 2020 dan diikuti oleh 50 mahasiswa yang sedang atau akan melaksanakan tugas akhir. Setelah pelatihan selesai, dipilih beberapa mahasiswa dari peserta yang sedang melaksanakan Tugas Akhir untuk mengikuti pendampingan intensif. Dalam kegiatan ini mahasiswa memahami dan dapat mempraktekkan secara langsung fitur-fitur microsoft word dan software mendeley dalam tugas akhir mereka. Pelatihan ini memberikan banyak manfaat kepada mahasiswa terutama dalam penulisan daftar pustaka, penyusunan halaman, dan membuat gambar atau tabel. Kata Kunci: tugas akhir, pelatihan, microsoft word, mendeley
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