Diagnostic and interventional radiology facilities are among the supporting facilities in establishing the diagnosis of a disease in a hospital or others health facility. Diagnostic radiology is an activity related to the use of facilities for diagnostic purposes. Every use of nuclear power, including x-rays, which are sources of ionizing radiation, must follow radiation protection and safety principles. One of the principles of radiation protection and safety is optimization. Ionizing radiation given to patients in diagnostic and interventional radiological activities must also follow the rules or guidelines provided by the standards of radiation protection and safety principles. One practical tool in carrying out the optimization measures in radiation protection and safety is the Diagnostic Reference Level (DRL) level. To ensure and strive for the licensees to meet the optimization principle, BAPETEN establishes laws and regulations that must be implemented and complied with by the permit holder to utilize ionizing radiation. The principle of optimization in radiation protection and safety is one of the radiation safety requirements that must be fulfilled by permit holders as mandated in article 21, article 34, and article 35 in Government Regulation (GR) Number 33 Year 2007 [1] concerning Ionizing Radiation Safety and Radioactive Source Security. Medical practitioners must use the level of medical exposure guidance when carrying out the diagnostic and interventional radiological procedures to optimize protection for patients. Licensees play an important role in making and submitting patient dosage record reports for the benefit of optimization in radiation protection and safety. When establishing this level of diagnostic guidance or DRL, the licensees must be based on patient dosage records for patients who have performed diagnostic and interventional radiological examinations. Patient dosage records must always be done to ensure that the examination is in accordance with the established operational procedures. In addition, recording the patient’s dose also needs to be done in order to evaluate the examination and evaluation procedures if under certain conditions, the administration of doses to patients is too high or too low. If, during an examination, a high dose is obtained, it is necessary to investigate and consider the use of a high dose. Another second thing that will receive the effects or effects of the DRL determination is related to the profession of medical physicists. The medical physicist profession gets the mandate from BAPETEN to deliver and supervise reports related to patient dosage records. These patient dosage records will be used as a basis for the preparation and establishment of DRL or diagnostic guidance levels.
{"title":"Legal basic and aspects of regulation of the diagnostic reference level (DRL) in Indonesia","authors":"S. Sudradjat, R. Rusmanto","doi":"10.1063/5.0058918","DOIUrl":"https://doi.org/10.1063/5.0058918","url":null,"abstract":"Diagnostic and interventional radiology facilities are among the supporting facilities in establishing the diagnosis of a disease in a hospital or others health facility. Diagnostic radiology is an activity related to the use of facilities for diagnostic purposes. Every use of nuclear power, including x-rays, which are sources of ionizing radiation, must follow radiation protection and safety principles. One of the principles of radiation protection and safety is optimization. Ionizing radiation given to patients in diagnostic and interventional radiological activities must also follow the rules or guidelines provided by the standards of radiation protection and safety principles. One practical tool in carrying out the optimization measures in radiation protection and safety is the Diagnostic Reference Level (DRL) level. To ensure and strive for the licensees to meet the optimization principle, BAPETEN establishes laws and regulations that must be implemented and complied with by the permit holder to utilize ionizing radiation. The principle of optimization in radiation protection and safety is one of the radiation safety requirements that must be fulfilled by permit holders as mandated in article 21, article 34, and article 35 in Government Regulation (GR) Number 33 Year 2007 [1] concerning Ionizing Radiation Safety and Radioactive Source Security. Medical practitioners must use the level of medical exposure guidance when carrying out the diagnostic and interventional radiological procedures to optimize protection for patients. Licensees play an important role in making and submitting patient dosage record reports for the benefit of optimization in radiation protection and safety. When establishing this level of diagnostic guidance or DRL, the licensees must be based on patient dosage records for patients who have performed diagnostic and interventional radiological examinations. Patient dosage records must always be done to ensure that the examination is in accordance with the established operational procedures. In addition, recording the patient’s dose also needs to be done in order to evaluate the examination and evaluation procedures if under certain conditions, the administration of doses to patients is too high or too low. If, during an examination, a high dose is obtained, it is necessary to investigate and consider the use of a high dose. Another second thing that will receive the effects or effects of the DRL determination is related to the profession of medical physicists. The medical physicist profession gets the mandate from BAPETEN to deliver and supervise reports related to patient dosage records. These patient dosage records will be used as a basis for the preparation and establishment of DRL or diagnostic guidance levels.","PeriodicalId":20561,"journal":{"name":"PROCEEDINGS OF THE 6TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES 2020 (ISCPMS 2020)","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73358721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The complexity problem and challenges encountered in nuclear installation licensing services incapacitate the license evaluation to be executed by BAPETEN. A transdisciplinary approach is demanded to overcome the problem of nuclear reactor licensing evaluation. The establishment of networking and collaboration between generalist and specialist evaluators by involving several stakeholders can provide solutions for licensing evaluation to satisfy the evaluation and revision time according to the applicable laws and regulations. Stakeholder’s support for the establishment of networking and collaborations is 61 % latents, 19.4 % promoters, 2.8 % from apathetics, and 16.8 % defenders. Persuasive communication strategies can change stakeholder support for the establishment of the networking and collaborations by 33.9 % latents, 46.5 % promoters, 2.8 % apathetics, and 16.8 % defenders. With the shift from latents stakeholders provoking an increase in promoters from 19.4 % to 46.5 % is expected to accelerate the collaboration of generalists and specialists in assisting the licensing process of nuclear installations and materials.
{"title":"Establishment of a networking to support the effective nuclear reactor licensing process through a transdisciplinary approach","authors":"W. Wiryono, A. Awalludin","doi":"10.1063/5.0059385","DOIUrl":"https://doi.org/10.1063/5.0059385","url":null,"abstract":"The complexity problem and challenges encountered in nuclear installation licensing services incapacitate the license evaluation to be executed by BAPETEN. A transdisciplinary approach is demanded to overcome the problem of nuclear reactor licensing evaluation. The establishment of networking and collaboration between generalist and specialist evaluators by involving several stakeholders can provide solutions for licensing evaluation to satisfy the evaluation and revision time according to the applicable laws and regulations. Stakeholder’s support for the establishment of networking and collaborations is 61 % latents, 19.4 % promoters, 2.8 % from apathetics, and 16.8 % defenders. Persuasive communication strategies can change stakeholder support for the establishment of the networking and collaborations by 33.9 % latents, 46.5 % promoters, 2.8 % apathetics, and 16.8 % defenders. With the shift from latents stakeholders provoking an increase in promoters from 19.4 % to 46.5 % is expected to accelerate the collaboration of generalists and specialists in assisting the licensing process of nuclear installations and materials.","PeriodicalId":20561,"journal":{"name":"PROCEEDINGS OF THE 6TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES 2020 (ISCPMS 2020)","volume":"2 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83610873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optimization of radiation protection and safety in medical exposures for diagnostic and interventional radiology (DIR) examinations is based on the effort to provide minimal doses by taking into account the sufficient image quality to diagnose the patient’s disease. To facilitate the evaluation of the effectiveness of the optimization implementation in medical exposure, especially for diagnostic purposes, an indicator called the Diagnostic Reference Level (DRL) is used. BAPETEN has provided a web-based database application called Si-INTAN (National Patient Dose Information System) for online input of patient dose data on CT Scan, Fluoroscopy, Diagnostic Nuclear Medicine, General Radiography, Dental Radiography, Mammography modalities. This application functions as a comprehensive tool for establishing and providing Indonesian DRL (I-DRL) values so that it can be referred to by all DIR facilities in Indonesia. To improve the capability of this application in its role as a tool for determining the value of national DRL, the authors identify the challenges and propose action plans as a solution. It is concluded that it is necessary to stipulate regulations on reporting patient dose data, support of international and professional organizations, and hospital management support in mitigating patient dose data. Coordination is performed with the Indonesian Ministry of Health regarding the integration of the Si-INTAN system with the QUADRIL (Quality Assurance Audit for Diagnostic Radiology Improvement and Learning) application system and hospital accreditation systems.
{"title":"BAPETEN challenge for the development of the Indonesian diagnostic reference level (I-DRL)","authors":"I. Iswandarini, E. Kunarsih","doi":"10.1063/5.0058874","DOIUrl":"https://doi.org/10.1063/5.0058874","url":null,"abstract":"Optimization of radiation protection and safety in medical exposures for diagnostic and interventional radiology (DIR) examinations is based on the effort to provide minimal doses by taking into account the sufficient image quality to diagnose the patient’s disease. To facilitate the evaluation of the effectiveness of the optimization implementation in medical exposure, especially for diagnostic purposes, an indicator called the Diagnostic Reference Level (DRL) is used. BAPETEN has provided a web-based database application called Si-INTAN (National Patient Dose Information System) for online input of patient dose data on CT Scan, Fluoroscopy, Diagnostic Nuclear Medicine, General Radiography, Dental Radiography, Mammography modalities. This application functions as a comprehensive tool for establishing and providing Indonesian DRL (I-DRL) values so that it can be referred to by all DIR facilities in Indonesia. To improve the capability of this application in its role as a tool for determining the value of national DRL, the authors identify the challenges and propose action plans as a solution. It is concluded that it is necessary to stipulate regulations on reporting patient dose data, support of international and professional organizations, and hospital management support in mitigating patient dose data. Coordination is performed with the Indonesian Ministry of Health regarding the integration of the Si-INTAN system with the QUADRIL (Quality Assurance Audit for Diagnostic Radiology Improvement and Learning) application system and hospital accreditation systems.","PeriodicalId":20561,"journal":{"name":"PROCEEDINGS OF THE 6TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES 2020 (ISCPMS 2020)","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80913966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bisphenol A (BPA) is a chemical that is commonly applied in the manufacture of polycarbonate plastic and epoxy resins which are often used in food and beverage containers. Methylparaben (MeP) is commonly applied as food preservatives, products of personal cares, and medicines. This study was conducted to define the BPA and MeP effects on the formation of DNA-Adduct 8-Hydroxy-2’deoxyguanosine (8-OHdG) compounds. Analysis of 8-OHdG compounds was performed by applying a reverse-phase HPLC with a UV/Vis detector at the wavelength of 254nm. The optimum condition of HPLC was obtained with the mobile phase consisted of phosphate buffer solution and methanol at a ratio of 85:15 (v/v) and a flow rate of 1.2 mL/min. This research was conducted at pH 7.4 and temperature 37 °C with a variation of incubation time of 5 and 7 h. In this study, it was found that the presence of BPA and MeP in the mixtures produced an antagonistic effect to the formation of 8-OHdG compared to BPA and MeP in the separate reaction at the same condition of incubations.
{"title":"Study of the toxic effects (synergistic or antagonistic) of bisphenol A and methylparaben on the formation of DNA-adduct (8-OHdG)","authors":"R. Debora, B. Budiawan, S. Handayani, I. C. Dani","doi":"10.1063/5.0061149","DOIUrl":"https://doi.org/10.1063/5.0061149","url":null,"abstract":"Bisphenol A (BPA) is a chemical that is commonly applied in the manufacture of polycarbonate plastic and epoxy resins which are often used in food and beverage containers. Methylparaben (MeP) is commonly applied as food preservatives, products of personal cares, and medicines. This study was conducted to define the BPA and MeP effects on the formation of DNA-Adduct 8-Hydroxy-2’deoxyguanosine (8-OHdG) compounds. Analysis of 8-OHdG compounds was performed by applying a reverse-phase HPLC with a UV/Vis detector at the wavelength of 254nm. The optimum condition of HPLC was obtained with the mobile phase consisted of phosphate buffer solution and methanol at a ratio of 85:15 (v/v) and a flow rate of 1.2 mL/min. This research was conducted at pH 7.4 and temperature 37 °C with a variation of incubation time of 5 and 7 h. In this study, it was found that the presence of BPA and MeP in the mixtures produced an antagonistic effect to the formation of 8-OHdG compared to BPA and MeP in the separate reaction at the same condition of incubations.","PeriodicalId":20561,"journal":{"name":"PROCEEDINGS OF THE 6TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES 2020 (ISCPMS 2020)","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91397556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
BAPETEN, as a regulatory body for nuclear energy utilization in Indonesia, requires an indicator to evaluate the safety and security of nuclear installations. BAPETEN has made BAPETEN Regulation Number 1 Year 2017 concerning the Implementation of Inspections in the Supervision of Nuclear Energy Utilization which regulates the implementation of inspections and also mentions the use of safety and security indicators (SSI). SSI is an indicator of compliance of safety and security requirements used by BAPETEN to assess the performance of nuclear installations in Indonesia. Indicators that indicate the safeguard and security level of nuclear installations consist of two aspects, namely safeguard and additional protocol aspect and also the security aspect. Indicators that indicate the safety level of nuclear installations consist of 6 aspects, namely operation aspects, maintenance and ageing management aspects, radiation protection aspects, environmental management and monitoring aspects, nuclear emergency preparedness aspects, and management system aspects. Although each of these aspects will contribute to the level of nuclear installations safety and security, each of these aspects may have different weight values. BAPETEN Regulation Number 1 Year 2017 has determined weight values for safeguard and security aspects. However, the weight value for the safety aspect has not been determined in this regulation. Hence, this paper proposes the Analytic Hierarchy Process (AHP) method to determine the weight value of each aspect of nuclear installation safety indicators. The results of the study show that the AHP method can be used to determine the weight value of each aspect of the safety indicators of nuclear installations to be used by BAPETEN in assessing the performance of nuclear installation in Indonesia.
{"title":"Determining the weight value of safety indicator for nuclear installation in Indonesia using analytic hierarchy process","authors":"D. Hermawan, A. Y. Pristianto, R. Palapa","doi":"10.1063/5.0058879","DOIUrl":"https://doi.org/10.1063/5.0058879","url":null,"abstract":"BAPETEN, as a regulatory body for nuclear energy utilization in Indonesia, requires an indicator to evaluate the safety and security of nuclear installations. BAPETEN has made BAPETEN Regulation Number 1 Year 2017 concerning the Implementation of Inspections in the Supervision of Nuclear Energy Utilization which regulates the implementation of inspections and also mentions the use of safety and security indicators (SSI). SSI is an indicator of compliance of safety and security requirements used by BAPETEN to assess the performance of nuclear installations in Indonesia. Indicators that indicate the safeguard and security level of nuclear installations consist of two aspects, namely safeguard and additional protocol aspect and also the security aspect. Indicators that indicate the safety level of nuclear installations consist of 6 aspects, namely operation aspects, maintenance and ageing management aspects, radiation protection aspects, environmental management and monitoring aspects, nuclear emergency preparedness aspects, and management system aspects. Although each of these aspects will contribute to the level of nuclear installations safety and security, each of these aspects may have different weight values. BAPETEN Regulation Number 1 Year 2017 has determined weight values for safeguard and security aspects. However, the weight value for the safety aspect has not been determined in this regulation. Hence, this paper proposes the Analytic Hierarchy Process (AHP) method to determine the weight value of each aspect of nuclear installation safety indicators. The results of the study show that the AHP method can be used to determine the weight value of each aspect of the safety indicators of nuclear installations to be used by BAPETEN in assessing the performance of nuclear installation in Indonesia.","PeriodicalId":20561,"journal":{"name":"PROCEEDINGS OF THE 6TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES 2020 (ISCPMS 2020)","volume":"73 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83030065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study analyzed the conception of national nuclear emergency preparedness system (NNEPS) from the state defense perspective approach. A case study qualitative method was used to explore and analyze comprehensively the NNEPS problems in Indonesia. The study used requirements from relevance regulations either from nuclear energy regulations, disaster management regulations, and state defense regulations as the tool to assess the implementations of the system. Results showed that current problem of the NNEPS is the system has not been synergized and integrated into the disaster management system. This condition answering question why the NNEPS has not been fully implemented at local government and central government levels. From the state defense perspective, the integrated NNEPS from the licensee level to the central government levels is needed to be prepared early by the government. It is as an effort to prevent the development of nuclear incident becomes a nuclear emergency or disaster which may disrupt national security, public security and human security. Thus, there is a need for the government to undertake collaborative governance policies and facilitative leadership approach to solve current problems. Through collaboration capacity and resources, weaknesses at one institution are strengthened by capacity and resources from other institutions. The suggested approach is in line with the essence of the state defense that is to build our own national resilience by using all national resources.
{"title":"The conception of national nuclear emergency preparedness system from the state defense perspective","authors":"D. Apriliani, S. Maarif, H. Heridadi","doi":"10.1063/5.0058883","DOIUrl":"https://doi.org/10.1063/5.0058883","url":null,"abstract":"This study analyzed the conception of national nuclear emergency preparedness system (NNEPS) from the state defense perspective approach. A case study qualitative method was used to explore and analyze comprehensively the NNEPS problems in Indonesia. The study used requirements from relevance regulations either from nuclear energy regulations, disaster management regulations, and state defense regulations as the tool to assess the implementations of the system. Results showed that current problem of the NNEPS is the system has not been synergized and integrated into the disaster management system. This condition answering question why the NNEPS has not been fully implemented at local government and central government levels. From the state defense perspective, the integrated NNEPS from the licensee level to the central government levels is needed to be prepared early by the government. It is as an effort to prevent the development of nuclear incident becomes a nuclear emergency or disaster which may disrupt national security, public security and human security. Thus, there is a need for the government to undertake collaborative governance policies and facilitative leadership approach to solve current problems. Through collaboration capacity and resources, weaknesses at one institution are strengthened by capacity and resources from other institutions. The suggested approach is in line with the essence of the state defense that is to build our own national resilience by using all national resources.","PeriodicalId":20561,"journal":{"name":"PROCEEDINGS OF THE 6TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES 2020 (ISCPMS 2020)","volume":"2017 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72606628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The parameters of educational success can be measured by conducting an educational assessment in the form of an evaluation. In the process of evaluation, especially learning outcomes evaluation, teachers generally use the examination system. The purposes of this research are to analyze the quality of Mathematics exam questions made by teachers and predict the Mathematics ability of ‘A’ High School students in Bekasi. The data used are the exam questions, the answer of exam questions and students’ answers to the Mathematics final exam with 148 subjects of Grade 10 students of ‘A’ High School in Bekasi. The method used to achieve these purposes is Item Response Theory with 4 parameters. The result of this study obtained show that from 30 exam questions made by the school, there are 19 items with good quality to measure the ability of students. The result of the analysis based on all items, it was found that from 148 students who took the Mathematics Examination at the ‘A’ High School in Bekasi, there are 25 students with low level of ability, 97 students with medium level of ability, and 26 students with high level of ability. The result of the analysis based on good quality items, it was found that from 148 students who took the Mathematics Examination at the ‘A’ High School in Bekasi, there are 21 students with low level of ability, 103 students with medium level of ability, and 24 students with high level of ability.
教育成功的参数可以通过以评估的形式进行教育评估来衡量。在评价过程中，特别是学习成果评价中，教师一般采用考试制度。本研究的目的是分析教师的数学考题质量，预测别加西A级高中学生的数学能力。使用的数据是Bekasi ' A '高中10年级148个科目的考试题目、试题答案和学生对数学期末考试的答案。达到这些目的的方法是带有4个参数的项目反应理论。本研究的结果显示，在学校制作的30道试题中，有19道试题质量较好，可以用来衡量学生的能力。对所有项目进行综合分析的结果显示，在Bekasi A高中参加数学考试的148名学生中，能力水平低的学生有25人，能力水平中等的学生有97人，能力水平高的学生有26人。以优质项目为基础进行分析的结果显示，在Bekasi A高中参加数学考试的148名学生中，能力水平低的学生有21人，能力水平中等的学生有103人，能力水平高的学生有24人。
{"title":"Analysis of the quality of mathematical examination items for high school ‘A’ in Bekasi","authors":"Y. F. Siregar, R. Setiadi","doi":"10.1063/5.0061171","DOIUrl":"https://doi.org/10.1063/5.0061171","url":null,"abstract":"The parameters of educational success can be measured by conducting an educational assessment in the form of an evaluation. In the process of evaluation, especially learning outcomes evaluation, teachers generally use the examination system. The purposes of this research are to analyze the quality of Mathematics exam questions made by teachers and predict the Mathematics ability of ‘A’ High School students in Bekasi. The data used are the exam questions, the answer of exam questions and students’ answers to the Mathematics final exam with 148 subjects of Grade 10 students of ‘A’ High School in Bekasi. The method used to achieve these purposes is Item Response Theory with 4 parameters. The result of this study obtained show that from 30 exam questions made by the school, there are 19 items with good quality to measure the ability of students. The result of the analysis based on all items, it was found that from 148 students who took the Mathematics Examination at the ‘A’ High School in Bekasi, there are 25 students with low level of ability, 97 students with medium level of ability, and 26 students with high level of ability. The result of the analysis based on good quality items, it was found that from 148 students who took the Mathematics Examination at the ‘A’ High School in Bekasi, there are 21 students with low level of ability, 103 students with medium level of ability, and 24 students with high level of ability.","PeriodicalId":20561,"journal":{"name":"PROCEEDINGS OF THE 6TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES 2020 (ISCPMS 2020)","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74600702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Oktavianto, R. Setiawan, I. Ariyanti, A. Saputra
Living things cannot be escaped from the radiation in their everyday life. The existing radiation is known as natural radiation. The largest source of radiation received by humans comes from natural radiation, which estimated about 87 %. It turns out that about 47 % of the natural radioactivity comes from radon and the rest comes from other radiation sources. The danger of radon gas internal radiation is when inhaled by humans and flows into the body through the respiratory system. Radon decay in the form of a solid will settle in the lungs. Radon is an alpha transmitting radioactive element, so that its presence in the lungs can cause damage to cell tissue. Damaged tissue can die or live abnormally (cancer cells). This study aims to determine the amount of radon gas concentration in the STTN-BATAN environment. Radon measurements were carried out using a RAD7 detector and other supporting equipment. The measurement mode used is the sniff mode. Solid state detectors are semiconductor materials (usually silicon) that convert alpha radiation directly into electrical signals. RAD7 does not measure the concentration of radon decay products, but only the concentration of radon gas. Radon gas measurements were carried out in several areas of STTN-BATAN for 15 min with repetitions of 3 times when the academic community was doing the normal activities. The results showed that the concentration of radon gas in the STTN-BATAN Yogyakarta region had results below the threshold recommended by ICRP Publication 65 (< 1500 Bq/m3) at several measurement points. Only at one point of measurement showed the results above the recommendation of ICRP Publication 65, which is 2153 Bq/m3. The estimated effective dose of radon gas to the academic community is still below the threshold recommended by UNSCEAR in 2000, so it can be assured that the academic community activity is in safe conditions.
生物在日常生活中无法逃脱辐射。现有的辐射被称为自然辐射。人类接受的最大辐射源来自自然辐射，估计约占87%。事实证明，大约47%的天然放射性来自氡，其余来自其他辐射源。氡气内部辐射的危险是当人体吸入并通过呼吸系统流入体内时。氡以固体形式衰变后会在肺部沉淀。氡是一种发射α的放射性元素，因此它在肺部的存在会对细胞组织造成损害。受损组织可能死亡或异常存活(癌细胞)。本研究旨在确定stn - batan环境中氡气的浓度。使用RAD7探测器和其他辅助设备进行了氡测量。使用的测量模式是嗅探模式。固态探测器是一种半导体材料(通常是硅)，它能将α辐射直接转换成电信号。RAD7不测量氡衰变产物的浓度，只测量氡气的浓度。在学术界进行正常活动时，在STTN-BATAN的几个地区进行了15分钟的氡气测量，每次重复3次。结果表明，stn - batan Yogyakarta地区的氡气浓度在几个测量点的结果低于ICRP第65号出版物推荐的阈值(< 1500 Bq/m3)。只有一个测量点的结果高于ICRP第65号出版物的建议值，即2153 Bq/m3。氡气体对学术界的估计有效剂量仍低于科委会在2000年建议的阈值，因此可以确信学术界的活动是在安全的条件下进行的。
{"title":"Radon gas concentration analysis in the area of STTN-BATAN Yogyakarta","authors":"P. Oktavianto, R. Setiawan, I. Ariyanti, A. Saputra","doi":"10.1063/5.0059108","DOIUrl":"https://doi.org/10.1063/5.0059108","url":null,"abstract":"Living things cannot be escaped from the radiation in their everyday life. The existing radiation is known as natural radiation. The largest source of radiation received by humans comes from natural radiation, which estimated about 87 %. It turns out that about 47 % of the natural radioactivity comes from radon and the rest comes from other radiation sources. The danger of radon gas internal radiation is when inhaled by humans and flows into the body through the respiratory system. Radon decay in the form of a solid will settle in the lungs. Radon is an alpha transmitting radioactive element, so that its presence in the lungs can cause damage to cell tissue. Damaged tissue can die or live abnormally (cancer cells). This study aims to determine the amount of radon gas concentration in the STTN-BATAN environment. Radon measurements were carried out using a RAD7 detector and other supporting equipment. The measurement mode used is the sniff mode. Solid state detectors are semiconductor materials (usually silicon) that convert alpha radiation directly into electrical signals. RAD7 does not measure the concentration of radon decay products, but only the concentration of radon gas. Radon gas measurements were carried out in several areas of STTN-BATAN for 15 min with repetitions of 3 times when the academic community was doing the normal activities. The results showed that the concentration of radon gas in the STTN-BATAN Yogyakarta region had results below the threshold recommended by ICRP Publication 65 (< 1500 Bq/m3) at several measurement points. Only at one point of measurement showed the results above the recommendation of ICRP Publication 65, which is 2153 Bq/m3. The estimated effective dose of radon gas to the academic community is still below the threshold recommended by UNSCEAR in 2000, so it can be assured that the academic community activity is in safe conditions.","PeriodicalId":20561,"journal":{"name":"PROCEEDINGS OF THE 6TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES 2020 (ISCPMS 2020)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73821977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper, we report our current progress on constructing the machinery to calculate the moment of inertia of a compact star in the Eddington-inspired Born Infeld theory. As a result of translating the metric functions from apparent metric to physical metric, we obtain that the resulting physical moment of inertia is shifted by a term that is linear to κ, one of the parameters of EiBI.
{"title":"Moment of inertia of a slowly rotating compact star in Eddington-inspired Born Infeld theory","authors":"I. Prasetyo, A. Sulaksono, H. S. Ramadhan","doi":"10.1063/5.0058699","DOIUrl":"https://doi.org/10.1063/5.0058699","url":null,"abstract":"In this paper, we report our current progress on constructing the machinery to calculate the moment of inertia of a compact star in the Eddington-inspired Born Infeld theory. As a result of translating the metric functions from apparent metric to physical metric, we obtain that the resulting physical moment of inertia is shifted by a term that is linear to κ, one of the parameters of EiBI.","PeriodicalId":20561,"journal":{"name":"PROCEEDINGS OF THE 6TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES 2020 (ISCPMS 2020)","volume":"81 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76844999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
W. Wardhani, H. S. Titah, H. Pratikno, I. Purwanti
Crude oil spills are not unfamiliar when it comes to petroleum mining. Crude oil degradation in nature can be conducted using the help from microorganisms. Bacillus subtilis and Pseudomonas putida have been proven to have the ability to degrade crude oil hydrocarbons. Each bacterium has different resistance level for different kind of pollutant and concentration. Range finding test was used to determine the range of concentrations for a specific compound in toxicity test. The objective of this study was to determine whether B. subtilis and P. putida can live on various crude oil concentrations (0 %, 5 %, 10 % and 15 % (v/v)) using nutrient agar medium. The maximum concentration was 15 % (v/v) for crude oil using bioremediation treatment. The bacteria were obtained from a pure culture at ITS environmental remediation laboratory and the crude oil was obtained from one of PT. Pertamina oil refineries. The bacteria were incubated at 37 °C and were screened using comparison between 0 % and the other variations each day for 7 days. The result of the range finding test showed that both the bacteria can live at various concentrations, even 15 % (v/v). It was shown that both of them potentially have a capability to be used to degrade a considered heavily crude oil polluted area.
{"title":"Range finding test of crude oil on Bacillus subtilis and Pseudomonas putida","authors":"W. Wardhani, H. S. Titah, H. Pratikno, I. Purwanti","doi":"10.1063/5.0058775","DOIUrl":"https://doi.org/10.1063/5.0058775","url":null,"abstract":"Crude oil spills are not unfamiliar when it comes to petroleum mining. Crude oil degradation in nature can be conducted using the help from microorganisms. Bacillus subtilis and Pseudomonas putida have been proven to have the ability to degrade crude oil hydrocarbons. Each bacterium has different resistance level for different kind of pollutant and concentration. Range finding test was used to determine the range of concentrations for a specific compound in toxicity test. The objective of this study was to determine whether B. subtilis and P. putida can live on various crude oil concentrations (0 %, 5 %, 10 % and 15 % (v/v)) using nutrient agar medium. The maximum concentration was 15 % (v/v) for crude oil using bioremediation treatment. The bacteria were obtained from a pure culture at ITS environmental remediation laboratory and the crude oil was obtained from one of PT. Pertamina oil refineries. The bacteria were incubated at 37 °C and were screened using comparison between 0 % and the other variations each day for 7 days. The result of the range finding test showed that both the bacteria can live at various concentrations, even 15 % (v/v). It was shown that both of them potentially have a capability to be used to degrade a considered heavily crude oil polluted area.","PeriodicalId":20561,"journal":{"name":"PROCEEDINGS OF THE 6TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES 2020 (ISCPMS 2020)","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86239639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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