COMMISSIONING TESTING FOR IN VITRO IN VIVO FACILITY AT RADIAL PIERCING BEAM-PORT OF THE KARTINI RESEARCH REACTOR FOR BORON NEUTRON CAPTURE CANCER THERAPY

The purpose of the commissioning for in vitro in vivo test facility is to verify that the the facility has fulfilled the safety standards requirements, especially those related to radiation exposure. The standard requirement for environmental radiation exposure by IAEA is 20 mSv/hour. Otherwise results of the premilinary commissioning testing at the distance of 3 meters from in vitro in vivo test facility at radial piercing beam-port  for 100 kW power level of the Kartini research reactor is for radiation exposure being around 9 mSv/hour. This means that the radiation exposure is less than the IAEA safety standard requirement of 20 mSv/hour. This is also less than the requirement of The Indonesian Regulatory Body limitation which is restricted to 15 mSv/hour. It can be concluded that when the reactor is operated at 100 kW power level for utilization by experiments in vitro/in vivo test, the facility is safe. However in order to be more safe at the restricted area, implementation of total quality management system should be completed with standard operating procedure (SOP) conducted with distance, time and shielding of radiation exposure for radiation safety protection system in utilization of the in vitro in vivo test facilities. When the SOP of the utilization of the in vitro in vivo test facility is implemented, the procedure is safer. &nbsp

DESIGN AND MANUFACTURING DEVICE MOBILITY LOAD MOTION SHIELDING PARAFFIN RADIATION PROTECTION SYSTEM FACILITY TEST IN VITRO IN VIVO

Practical work at PSTA-BATAN to find paraffin design and the design of mobile devices with Monte Carlo N Particle (MCNP) software. The method used is to determine the paraffin design and calculate the volume of paraffin. The resulting intact writing that modeled with the MCNP. Shielding is required to absorb the leaking radiation until the 20 mSv / year Dose Limit Value for radiation workers is met. The material used is paraffin. Calculation is done by using MCNPX calculation facility with tariff of 10,42 μSv / hour. The paraffin design criteria are built on recommendations from Indonesian Journal of Physics and Nuclear Applications Volume 1, Number 1, February 2016. Some of the above-standard methods are overcome with the protection aspects of distance and radiation time. Paraffin used is made of hydrocarbons suitable for strengthening shielding structures and for absorbing gamma radiation. &nbsp

PENELITIAN PENGARUH VARIASI MEDIA QUENCHING TERHADAP SIFAT FISIS DAN MEKANIS STAINLESS CASTING SCS 14 JIS G 5121

Tujuan dari penelitian ini adalah untuk mengetahui pengaruh media pendingin terhadap perubahan sifat fisis dan mekanis stainless casting SCS 14 dengan menggunakan standar JIS G 5121. Pengujian bahan yang meliputi: pengujian komposisi kimia, pengujian kekerasan dan pengujian metalografi. Pengujian komposisi kimia menggunakan Spectrometer. Uji kekerasan menggunakan alat Brinell Hardness dan Micro Hardness Vickers. Pengujian struktur mikro menggunakan Zeiss Metalurgical Microscope dan Olympus Photomicrografic. Jumlah spesimen sebanyak 8 buah. 2 spesimen raw materials, 2 spesimen untuk quenching air, 2 spesimen untuk quenching larutan garam, 2 spesimen untuk quenching oli. Perlakuan panas yang dilakukan adalah pemanasan material pada suhu 1100 o C dengan waktu penahanan 30 menit kemudian diquench pada media pendingin. Dari hasil pengujian yang telah dilakukan didapatkan hasil sebagai berikut: komposisi kimia dengan unsur dominan yaitu Besi (Fe) = 66,12 %, Khrom (Cr) = 17,6 % dan Nikel (Ni) = 12.1 % sedangkan unsur yang lain Karbon (C) = 0,113 %, Silikon (Si) = 0,517 %, Mangan (Mn) = 0,985 %, Molibdem (Mo) = 1,85 % serta unsur penyusun lain yang prosentasenya kecil. Harga kekerasan untuk raw materials spesimen 1 = 167,04 BHN dan spesimen 2 = 164,47 BHN, untuk media pendingin air spesimen 1 = 214 BHN dan spesimen 2 = 171 BHN, untuk media pendingin larutan garam spesimen 1 = 228 BHN dan spesimen 2 = 209 BHN serta untuk media pendingin oli spesimen 1 = 195 BHN dan spesimen 2 = 195 BHN. Dari pengujian struktur mikro, baja tahan karat dengan komposisi 66,12% Fe + 30% (Cr + Ni) tampak jelas bahwa stainless casting SCS 14 jenis austenit karena kandungan Ni 12,1% sedangkan Cr 17,6%. Dan untuk partikel yang agak berwarna gelap atau kecoklatan pada batas butir adalah ferit-δ. Sedangkan ferit-δ merupakan inti denrite yang terbentuk pada awal tahap pembentukan sedangkan bagian luar berupa austenit

Detail Engineering Design of Compact Neutron Generator to Support BNCT Facility in Indonesia

Boron Neutron Capture Therapy (BNCT) is a method of cancer therapy based on neutron radiation which has advantages over the other cancer therapy methods. It uses a stable isotope of 10B which will be an excited isotope of 11B when irradiated by thermal neutron. It immediately (in 10-12 s) breaks into α particle and a lithium recoil nucleus. The two secondary particles play important roles in killing cancer cells. They have a short range in tissue (5 µm and 9 µm respectively) which is less than the average dimension of a cell. This leads to the damage of cancer cell only but the normal cells remain safe. Thermal and epithermal neutrons play important roles in BNCT. From the beginning the neutron sources for BNCT are nuclear reactors which produce high intensity of thermal neutrons (En <0.5 eV), epithermal neutrons (0.5 eV< En < 10 keV) and fast neutrons (En > 10 keV). However, nuclear reactors are very expensive and too large to be used in hospitals. In addition, the operation of nuclear reactors is under restricted protocols related to safety and physical protection. A compact neutron generator is a good choice of neutron source for BNCT. The advantages of compact neutron generator are that the size is small and that the neutron yield is more than 109 ns-1 which satisfies the requirement recommended by IAEA. Additionally, the neutron energy is not so high that it requires a complicated neutron collimator, the operation is easy, and the public acceptance is higher than with nuclear reactors. Based on the requirements of epithermal neutron beam for BNCT facility, the detailed engineering design of compact neutron generator has been made

Implement Explicite Instruction for Building Innovative Vocational Student Discipline and Culture

Abstracts. The results of Widarto's research, Putut H., Prihatno K., (2018) show that the score of work discipline culture and innovative culture in the implementation of learning of industrial work culture in Diploma – III Mechanical Engineering students is still low. Each scored 2.78 and 2.67 on a scale of 4. The current study aims to: (1) Build a culture of work discipline and innovative culture in Diploma – III students of Mechanical Engineering through the implementation of the Explicite Instruction learning model; (2) Measuring the effectiveness of the Explicite Instruction learning model in enhancing the work culture of innovative aspects and the culture of work discipline in Diploma – III students of Mechanical Engineering, Faculty of Engineering, Yogyakarta State University. The method used is classroom action research (CAR). The subject of the study was 15 Diploma – III students of Mechanical Engineering. This class action research design consists of four stages of each cycle, namely planning, action, observation, and reflection. The results showed that: (1) Implementation of Explicite Instruction went well as expected and can be said to be successful because it reached the targets set as success criteria. The optimal implementation of Instruction requires 3 to 4 cycles; (2) Explicite Instruction is effective in enhancing student culture and innovative culture. This can be seen from the increase in the average score of discipline culture in each cycle in a row: 2.85; 2.98; 3.53; 3.67 and an increase in the average score of innovative culture each cycle in a row: 2.71; 2.84; 3.29; 3.42

Implement Explicite Instruction for Building Innovative Vocational Student Discipline and Culture

Abstracts. The results of Widarto's research, Putut H., Prihatno K., (2018) show that the score of work discipline culture and innovative culture in the implementation of learning of industrial work culture in Diploma – III Mechanical Engineering students is still low. Each scored 2.78 and 2.67 on a scale of 4. The current study aims to: (1) Build a culture of work discipline and innovative culture in Diploma – III students of Mechanical Engineering through the implementation of the Explicite Instruction learning model; (2) Measuring the effectiveness of the Explicite Instruction learning model in enhancing the work culture of innovative aspects and the culture of work discipline in Diploma – III students of Mechanical Engineering, Faculty of Engineering, Yogyakarta State University. The method used is classroom action research (CAR). The subject of the study was 15 Diploma – III students of Mechanical Engineering. This class action research design consists of four stages of each cycle, namely planning, action, observation, and reflection. The results showed that: (1) Implementation of Explicite Instruction went well as expected and can be said to be successful because it reached the targets set as success criteria. The optimal implementation of Instruction requires 3 to 4 cycles; (2) Explicite Instruction is effective in enhancing student culture and innovative culture. This can be seen from the increase in the average score of discipline culture in each cycle in a row: 2.85; 2.98; 3.53; 3.67 and an increase in the average score of innovative culture each cycle in a row: 2.71; 2.84; 3.29; 3.42

Pengelolaan Supervisi Akademik Di SMP Negeri 2 Tasikmadu Karanganyar

The general objective of this study describes the management of academic supervision in SMP Negeri 2 Tasikmadu Karanganyar. While the specific purpose of this study is to describe about 1) Planning academic supervision; 2) Implementation of academic supervision; and 3) assessment and feedback of academic supervision in SMP Negeri 2 Tasikmadu Karanganyar. This type of research is qualitative. The research approach uses phenomenology. Subjects were principals and teachers. Methods of data collection using in-depth interviews, observation and documentation. Data were analyzed using triangulation. Results of the study are: 1) Planning of academic supervision in SMP Negeri 2 Tasikmadu Karanganyar compiled based on units of time semesters, each semester of at least one academic supervision; 2) Implementation of academic supervision in SMP Negeri 2 Tasikmadu Karanganyar adapted to ongoing learning material that is taught by each teacher takes place each semester one time; and 3) Assessment of academic supervision in SMP Negeri 2 Tasikmadu Karanganyar carried out based on the implementation of the supervision of classroom visits by principal. Feedback of academic supervision in SMP Negeri 2 Tasikmadu Karanganyar take place between principals and teachers in the form of reflection result academic supervision, the school principal to provide input to the teacher about some things that need to be fixed such as the allocation of instructional time, tools and instructional media. Keyword : academic, management, supervisio

Green Skills Literacy Level Analysis Vocational Students in Indonesia

The purpose of this study in general is to determine the level of green skill literacy of SMK students in Indonesia, and specifically want to see the level of green skill literacy of SMK students based on: (1) Description for SMK throughout Indonesia male and female; (2) Description for vocational schools in Java and outside Java; (3) Description for public and private vocational schools; (4) Description for SMK in big cities (Yogyakarta, Bandung, Medan, Jakarta, Palangkaraya, Manado), and in small cities (Rembang, Magelang, Nganjuk, Jember, Probolinggo, Gresik, Banyumas, Blitar, Simelue, Bangka, Ende, etc.); (5) Description for SMK Description for agricultural and non-agricultural expertise programs; (6) Description for engineering and non-engineering expertise programs; (7) Description for SMK throughout Indonesia grade 10, 11 and 12; (8) Description for vocational schools throughout Indonesia whose age = 17 years and 17 years and under and those aged 17 and over. The research method used in this study is the survey research method. The population in this study is vocational students in Indonesia. The sampling technique in this study used non-probability sampling, using accidental sampling techniques. Researchers directly collected data from the sampling units encountered, in this case vocational students throughout Indonesia. Once the amount is estimated to be sufficient, data collection is stopped. Referring to the characteristics of the population as above, the sample was taken from vocational students in several cities in Indonesia who were in grades 10, 11, 12, and also from various kinds of expertise programs. The results showed that: (1) Green skill literacy level for vocational students throughout Indonesia (100%), LESS AND LOW; (2) Green skill literacy rate for male (63%) and female (37%) vocational students, LESS AND LOW; (3) Green skill literacy rate for SMK Java (64%) and outside Java (36%), LESS AND LOW STUDENTS; (4) Green skill literacy rate for students of Public (79%) and Private (21%), LESS AND LOW; (5) Green skill literacy rate for SMK Kota Besar (51%) and Kota Kecil (49%), LESS AND LOW; (6) Green skill literacy rate for Agricultural (12%) and Non-Agricultural (88%), LESS AND LOW VOCATIONAL STUDENTS; (7) Green skill literacy level for SMK Teknik (60%) and Non Technical (40%), LESS AND LOW STUDENTS; (8) Green skill literacy levels for SMK Grade 10 (50%), Grade 11 (28%), and Grade 12 (22%), LESS AND LOW; (9) Green skill literacy rate for SMK students aged < = 17 years (72%) and > 17 years (28%), LESS AND LOW