14 research outputs found

    MODIFICATION OF THE INGENHOUSZ TRIAL TOOL TO IMPROVE THE EFFECTIVENESS AND EFFICIENCY OF PHOTOSYNTHESIS LEARNING IN CLASS VIII-3 STUDENTS SMP NEGERI 4 PALANGKA RAYA

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    The purpose of this study was to determine the effectiveness and efficiency of photosynthesis learning by using the modified Ingenhousz Experiment Tool that was made by researchers. The subjects in this study were students of SMP Negeri 4 Palangka Raya, grade VIII-3 Academic Year 2019/2020, with the total number of 23 students, consisting of 14 men and 9 women. Data collection for learning effectiveness was by using knowledge test sheets, performance and activities tests, while for learning efficiency by calculating the use of time in learning, product tests and questionnaires. Data on the effectiveness and efficiency of learning in the meeting-I and meeting-II were compared to determine the improvement. Based on the results of research, obtained that the use of the Ingenhousz Experiment Tool in photosynthesis learning resulted in an increase in learning outcomes, namely the average grade for knowledge rose from 56.69 to 80.86. Grade completeness increased from 34% to 90%. For the skills to carry out the experiment, the average grade increased from 63.00 to 78.52 and grade completeness skills rose from 22% to 95.65%. While for the average value of student activity increased from 2.57 to 2.85 in the good category. The ability of students to make Ingenhousz experimental equipment was 76.21 which was included in a good category, while the students' response to the learning process reached of 89%, which meant that the response of students was very good. The time spent could also be saved from 60 minutes to 45 minutes with the above results. It could be concluded that the modified Ingenhousz Experiment Tool increased the effectiveness and efficiency of the implementation of photosynthesis learning in grade VIII-3 of SMP Negeri 4 Palangka Ray

    A mobile Magnetic Sensor Unit for the KATRIN Main Spectrometer

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    The KArlsruhe TRItium Neutrino experiment (KATRIN) aims to measure the electron neutrino mass with an unprecedented sensitivity of 0.2 eV/c2, using b decay electrons from tritium decay. For the control of magnetic field in the main spectrometer area of the KATRIN experiment a mobile magnetic sensor unit is constructed and tested at the KATRIN main spectrometer site. The unit moves on inner rails of the support structures of the low field shaping coils which are arranged along the the main spectrometer. The unit propagates on a caterpillar drive and contains an electro motor, battery pack, board electronics, 2 triaxial flux gate sensors and 2 inclination senors. During operation all relevant data are stored on board and transmitted to the master station after the docking station is reached.Comment: 11 pages, 14 figure

    Commissioning of the vacuum system of the KATRIN Main Spectrometer

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    The KATRIN experiment will probe the neutrino mass by measuring the beta-electron energy spectrum near the endpoint of tritium beta-decay. An integral energy analysis will be performed by an electro-static spectrometer (Main Spectrometer), an ultra-high vacuum vessel with a length of 23.2 m, a volume of 1240 m^3, and a complex inner electrode system with about 120000 individual parts. The strong magnetic field that guides the beta-electrons is provided by super-conducting solenoids at both ends of the spectrometer. Its influence on turbo-molecular pumps and vacuum gauges had to be considered. A system consisting of 6 turbo-molecular pumps and 3 km of non-evaporable getter strips has been deployed and was tested during the commissioning of the spectrometer. In this paper the configuration, the commissioning with bake-out at 300{\deg}C, and the performance of this system are presented in detail. The vacuum system has to maintain a pressure in the 10^{-11} mbar range. It is demonstrated that the performance of the system is already close to these stringent functional requirements for the KATRIN experiment, which will start at the end of 2016.Comment: submitted for publication in JINST, 39 pages, 15 figure

    Commissioning of the vacuum system of the KATRIN Main Spectrometer

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    The KATRIN experiment will probe the neutrino mass by measuring the beta-electron energy spectrum near the endpoint of tritium beta-decay. An integral energy analysis will be performed by an electro-static spectrometer (Main Spectrometer), an ultra-high vacuum vessel with a length of 23.2 m, a volume of 1240 m^3, and a complex inner electrode system with about 120000 individual parts. The strong magnetic field that guides the beta-electrons is provided by super-conducting solenoids at both ends of the spectrometer. Its influence on turbo-molecular pumps and vacuum gauges had to be considered. A system consisting of 6 turbo-molecular pumps and 3 km of non-evaporable getter strips has been deployed and was tested during the commissioning of the spectrometer. In this paper the configuration, the commissioning with bake-out at 300{\deg}C, and the performance of this system are presented in detail. The vacuum system has to maintain a pressure in the 10^{-11} mbar range. It is demonstrated that the performance of the system is already close to these stringent functional requirements for the KATRIN experiment, which will start at the end of 2016

    Commissioning of the vacuum system of the KATRIN Main Spectrometer

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    The KATRIN experiment will probe the neutrino mass by measuring the -electron energy spectrum near the endpoint of tritium -decay. An integral energy analysis will be performed by an electro-static spectrometer (“Main Spectrometer”), an ultra-high vacuum vessel with a length of 23.2 m, a volume of 1240m3, and a complex inner electrode system with about 120 000 individual parts. The strong magnetic field that guides the -electrons is provided by super-conducting solenoids at both ends of the spectrometer. Its influence on turbo-molecular pumps and vacuum gauges had to be considered. A system consisting of 6 turbo-molecular pumps and 3 km of non-evaporable getter strips has been deployed and was tested during the commissioning of the spectrometer. In this paper the configuration, the commissioning with bake-out at 300 C, and the performance of this system are presented in detail. The vacuum system has to maintain a pressure in the 1011^{-11} mbar range. It is demonstrated that the performance of the system is already close to these stringent functional requirements for the KATRIN experiment, which will start at the end of 2016

    HUBUNGAN ANTARA BODY IMAGE DENGAN KOMUNIKASI INTERPERSONAL PADA MAHASISWI

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    HUBUNGAN ANTARA BODY IMAGE DENGAN KOMUNIKASI INTERPERSONAL PADA MAHASISWI Mutia Unru Karsin Eva Meizara Puspita Dewi Muh. Nur Hidayat Nurdin Fakultas Psikologi. Universitas Negeri Makassar Jalan A.P. Pettarani, Makassar, Sulawesi Selatan, 90222 ABSTRAK Penelitian ini bertujuan untuk mengetahui hubungan antara body image dengan komunikasi interpersonal terhadap mahasiswi. Subjek dalam penelitian ini adalah mahasiswi angkatan 2012-2014 dengan rentang usia 18-21 tahun. Subjek diperoleh dengan teknik Accidental Sampling dalam pengambilan sampel. Alat ukur yang digunakan dalam penelitian ini adalah skala Body Image dan skala Komunikasi Interpersonal. Data analisis menggunakan teknik korelasi bivariat Spearman Product Moment. Berdasarkan hasil analisis data diperoleh bahwa besarnya kekuatan hubungan antara nilai variabel body image dengan komunikasi interpersonal adalah r = 0,264 dan nilai signifikansi (p) = 0,005 menunjukkan bahwa probabilitas di bawah 0,05. Hal tersebut menunjukkan bahwa terdapat hubungan positif antara body image dengan komunikasi interpersonal pada mahasiswi. Artinya semakin positif body image maka semakin positif pula komunikasi interpersonal mahasiswi. Koefisien determinasi yang diperoleh menunjukkan bahwa bobot sumbangan efektif total variabel body image terhadap komunikasi interpersonal adalah sebesar 7,7%. Hasil penelitian ini dapat menjadi dasar acuan untuk pengembangan intervensi psikologis remaja terutama mahasiswi yang memiliki rasa kurang percaya diri dan minder dalam berinteraksi dengan lingkungan sekitarnya. Kata kunci : body image, komunikasi interpersonal
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