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Ditemukan 5 dokumen yang sesuai dengan query
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"A window material study of window of Geiger-Muller detector was carried out. The aim of the investigated are determine type and optimum thickness of window materials for end window Geiger Muller,basically on the counting correction factor of alpha and gamma raditiation...."
Artikel Jurnal  Universitas Indonesia Library
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"A material study for cathode tube of side window Geiger-Muller detector was carried out. Aim of the study is determine the counting correction factor to the absorpsion gamma radiation, so the type and thickness of materials tube can be sutled...."
Artikel Jurnal  Universitas Indonesia Library
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Anisa Nur Istiqomah
"Pemeriksaan di instalasi radiologi setiap tahun semakin bertambah jumlahnya yang menyebabkan meningkatnya resiko bahaya radiasi pada petugas yang bekerja di medan radiasi. Pemantauan dosis radiasi telah dilakukan pada setiap petugas menggunakan dosimeter analog akan tetapi alat yang digunakan hanya dapat dibaca dalam 3 bulan sekali dan memiliki efek fading atau hilangnya dosis selama pemakaian. Lamanya waktu pembacaan dosis pada alat dosimeter analog menyebabkan petugas tidak menerima hasil bacaan tepat waktu. Penelitian ini bertujuan untuk membuat dosimeter secara digital yang mampu menampilkan hasil secara real-time dan memiliki penyimpanan yang baik pada website berbasis internet of things. Penelitian dilakukan dengan menggunakan sensor Geiger Muller M4011, rangkaian tegangan tinggi 350-400 Volt DC, rangkaian pembaca sinyal dan mikrokontroler ESP32. Pengujian kemampuan alat dilakukan dengan cara memberikan radiasi gamma pada alat prototipe dan dibandingkan hasilnya dengan alat standar Fluke 481. Analisis data dilihat rata-rata tiap pengujian dan standar deviasinya. Uji statistik menggunakan aplikasi Graphad Prism 9 untuk menyajikan statistik deskriptif dan uji beda menggunakan Mann Whitney test. Hasil perakitan sensor Geiger Muller M4011 dihubungkan dengan rangkaian tegangan tinggi 400 Volt dan mikrokontroler NodeMCU ESP32 DevKit V1 berhasil dirancang. Hasil dosis radiasi yang telah diolah ditampilkan dalam display OLED 128×64 dan aplikasi ThingSpeak melalui jaringan Wi-Fi. Prototipe mampu menangkap radiasi dengan rata-rata dan standar deviasi 0,02±0,01, pada alat standar Fluke 481 yaitu 0,01±0,002 pada jarak 15cm, 0,01±0,01 dan 0,009±0,00 pada jarak 30cm dan 0,008±0,009 dan 0,009±0,00 pada jarak 45cm. Hasil uji beda menggunakan Mann Whitney test mendapat p-value 0,0015, >0,9999, dan 0,018. Perbaikan dimensi alat dan pemilihan jenis sensor dapat dilakukan meningkatkan kemampuan prototipe serta pengujian alat menggunakan sumber radioaktif berenergi besar atau menggunakan pesawat sinar-X untuk melihat kemampuan alat menangkap energi terendah dan tertinggi.

Examinations at radiology installations are increasing every year which causes an increased risk of radiation hazards for officers working in the radiation field. Radiation dose monitoring has been carried out for each officer using an analog dosimeter, but the tool used can only be read once every 3 months and has a fading effect or loss of dose during use. The length of time it takes to read the dose on the analog dosimeter device causes officers not to receive the readings on time. This study aims to create a digital dosimeter capable of displaying real-time results and having good storage based on internet of things (IoT). The research was conducted using the Geiger Muller M4011 sensor, a high voltage circuit of 350-400 Volt DC, a signal reader circuit and an ESP32 microcontroller. Testing the capability of the device is carried out by giving gamma radiation to the prototype and comparing the results with the standard Fluke 481. Data analysis looks at the average of each test and its standard deviation. The statistical test used the Graphpad Prism 9 application to present descriptive statistics and the different test used the Mann Whitney test. The results of the Geiger Muller M4011 sensor assembly connected to a 400 Volt high voltage circuit and the NodeMCU ESP32 DevKit V1 microcontroller were successfully designed. The processed dose results are displayed on a 128×64 OLED display and the ThingSpeak application via a Wi-Fi network. The prototype captured radiation with a mean and standard deviation of 0.02±0.01, on the standard Fluke 481 0.01±0.002 at 15cm distance, 0.01±0.01 and 0.009±0.00 at 30cm distance and 0.008±0.009 and 0.009±0.00 at a distance of 45cm. The different test results using the Mann Whitney test got p-values of 0.0015, >0.9999, and 0.018. Improvements to the dimensions of the tool and the selection of the type of sensor can be carried out to increase the ability of the prototype as well as testing the device using high-energy radioactive sources or using an X-ray machine to see the ability of the device to capture the lowest and highest energy."
Depok: Fakultas Teknik Universitas Indonesia, 2023
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UI - Tesis Membership  Universitas Indonesia Library
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Guido Rappe
"ABSTRACT
This text is a short report of my experience with teaching the theories of Geiger and Noiré on the origin of language to 4th year students in Germanistik (German studies). The quality of these theories is very high and still prevailing. With them it is possible to discuss multiple strings of thoughts and to explain main developments in the intellectual history of German culture. Students can learn a lot about the history of science and language itself. The positive experiences I made with my students encourage me to suggest, that doing more work on Geiger and Noiré could profi t philosophical and linguistic research in general. But sadly enough, their thoughts are nearly forgotten and neglected today. In the following, I will show, that this is unjustified.
This text is a short report of my experience with teaching the theories of Geiger and Noiré on the origin of language to 4th year students in Germanistik (German studies). The quality of these theories is very high and still prevailing. With them it is possible to discuss multiple strings of thoughts and to explain main developments in the intellectual history of German culture. Students can learn a lot about the history of science and language itself. The positive experiences I made with my students encourage me to suggest, that doing more work on Geiger and Noiré could profi t philosophical and linguistic research in general. But sadly enough, their thoughts are nearly forgotten and neglected today. In the following, I will show, that this is unjustified."
Osaka: Graduate School of Language and Culture, Osaka University, 2018
400 FRO 1 (2018)
Artikel Jurnal  Universitas Indonesia Library
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Ward, Thomas J.
"In 1965, as part of the War on Poverty, the Office of Economic Opportunity approved a $1.3 million grant to fund the development of the first two community health centers in the United States: The Tufts-Delta Health Center in Mound Bayou, Mississippi, and the Columbia Point Health Center in Boston, which pioneered a health care delivery system that now includes more than 1,200 community centers in every U.S. state, providing care to over 24 million Americans annually. The architect of these centers was Dr. H. Jack Geiger, now known as the father of community medicine, who, along with members of the Medical Committee on Human Rights, a group of physicians active in the civil rights movement, conceived of this program in 1964. Drawing on his experience in South Africa, where he had apprenticed under Dr. Sidney Kark, who had developed community-based health centers in African townships, Geiger proposed a similar program for the poor in the United States. An advocate of the social determinants of health, Geiger created a center in Mississippi that did more than just provide clinical services; it developed innovative programs in nutrition, education, and environmental services. Out in the Rural also deals with the opposition that the center faced, from both state officials and local residents, providing insights into both race and class relations in Mississippi during the final years of the civil rights era. Finally, by examining the legacy of the Tufts-Delta Health Center, Out in the Rural provides a reevaluation of the War on Poverty a half-century after its inception.
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Oxford: Oxford University Press, 2017
e20470454
eBooks  Universitas Indonesia Library