Using of Stopping and Range of Ions in Matter Code to Study of Radiation Damage in Materials

The aim of this work to investigate the impact of the radiation damage in the materials by the proton energy irradiation. The damage parameter used in the evaluation is displacement per atom (DPA) in material as a function of proton energy. Stopping and Range of Ions in Matter (SRIM) code was used to calculate the total vacancy and the number of atomic displacements based on the Norgett-Robinson-Torrens model by difference energies for proton irradiation damage. The option of this code was calculated by using Ion Distribution and Quick Calculation of Damage (Kinchin-Pease) for Fe and Cu target and also Full damage cascade (F-C) was chosen for only Fe. The result is that, the prediction of the F-C model are higher than the K-P calculation. Comparisons has been made with an international standard definition of DPA.

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The Use of the MCNP Code for Radiation Damage Calculations

Mathematical Physics and Computer Simulation ◽

10.15688/mpcm.jvolsu.2021.1.5 ◽

2021 ◽

pp. 70-77

Author(s):

Mohammad Hiwa ◽

Keyword(s):

Monte Carlo ◽

Radiation Damage ◽

Cross Section ◽

Neutron Energy ◽

Radiation Transport ◽

Mcnp Code ◽

Transport Calculation ◽

Energy Irradiation ◽

Basic Concepts ◽

The Impact

This work gives a detailed analysis of the result of Monte Carlo physics practical using MCNP. This paper describes basic concepts of the Monte Carlo theory of radiation transport calculation and also discusses the variance and the history method as used in Monte Carlo Problem solving. Therefore, in this exercise the MCNP code has been used to solve and estimate the number of neutron flux. The paper investigated the impact of the primary radiation damage in iron by the neutron energy irradiation. The established measurement of radiation damage is the displacements per atom (dpa) in matter as a function of neutron energy. The simulations were carried out to calculate the dpa cross section.

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The In-Situ Quantification of Structural Radiation Damage in Zircon Using Laser-Induced Confocal Photoluminescence Spectroscopy

Minerals ◽

10.3390/min10010083 ◽

2020 ◽

Vol 10 (1) ◽

pp. 83

Author(s):

Christoph Lenz ◽

Elena Belousova ◽

Gregory R. Lumpkin

Keyword(s):

Radiation Damage ◽

State Of The Art ◽

Radioactive Decay ◽

Substantial Effect ◽

Irradiation Damage ◽

Spectral Bands ◽

Chemically Induced ◽

Icp Ms ◽

The Impact

We present a new methodology for laser-induced steady-state photoluminescence (PL) spectroscopy of Dy3+ that aims at a direct quantification of the amorphous fraction fa present in zircon (ZrSiO4), which undergoes a transition from a crystalline to a metamict state due to cumulative self-irradiation damage caused by the radioactive decay of substituted U and Th. Using state-of-the-art confocal spectrometers attached to optical microscopes, measurements may be performed non-destructively on the micrometre length-scale with the option to visualize radiation-damage patterns as revealed by hyperspectral PL maps. Zircon from the Ratnapura district (Sri Lanka, ~520 Ma), was used as reference material to substantiate the applicability of the proposed method. The accumulation of radiation damage in this material was investigated in detail and obtained fa values correlate with calculated α-doses in accordance to the direct impact model reported variously in the literature. The impact of chemically-induced, heterogeneous broadening of Raman and Dy3+ emission spectral bands is discussed on two examples from Mt. Malosa district, Malawi. A mean weighted U-Pb isotope age of 111 ± 1 Ma (pegmatitic-type) and a discordia age of 112 ± 1.6 Ma (hydrothermal-type) as obtained by LA-ICP-MS confirm their close genetic and temporal relationship. Studied zircon examples demonstrate that the amount of radiation damage present may have a substantial effect on the precision of LA-ICP-MS ages, but cannot be considered an exclusive cause for bias of obtained isotope ages.

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PERTANGGUNGJAWABAN KERUGIAN NEGARA DALAM PENGELOLAAN KEUANGAN DAERAH

EDUKASI ◽

10.33387/j.edu.v16i1.618 ◽

2018 ◽

Vol 16 (1) ◽

Author(s):

Hendra Karianga

Keyword(s):

Financial Management ◽

Criminal Liability ◽

The State ◽

Legal Proceedings ◽

Regional Finance ◽

Regional Budget ◽

State Finance ◽

Budget Policy ◽

Definition Of ◽

The Impact

Sources of revenue and expenditure of APBD (regional budget) can be allocated to finance the compulsory affairs and optional affairs in the form of programs and activities related to the improvement of public services, job creation, poverty alleviation, improvement of environmental quality, and regional economic growth. The implications of these policies is the need for funds to finance the implementation of the functions, that have become regional authority, is also increasing. In practice, regional financial management still poses a complicated issue because the regional head are reluctant to release pro-people regional budget policy, even implication of regional autonomy is likely to give birth to little kings in region causing losses to state finance and most end up in legal proceedings. This paper discusses the loss of state finance and forms of liability for losses to the state finance. The result of the study can be concluded firstly, there are still many differences in giving meaning and definition of the loss of state finace and no standard definition of state losses, can cause difficulties. The difficulty there is in an effort to determine the amount of the state finance losses. The calculation of state/regions losses that occur today is simply assessing the suitability of the size of the budget and expenditure without considering profits earned by the community and the impact of the use of budget to the community. Secondly, the liability for losses to the state finance is the fulfillment of the consequences for a person to give or to do something in the regional financial management by giving birth to three forms of liability, namely the Criminal liability, Civil liability, and Administrative liability.Keywords: state finance losses, liability, regional finance.

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Empowering Women Entrepreneurs Through Microfinance - A Case of Rural Bangladesh

ADVANCES IN BUSINESS RESEARCH INTERNATIONAL JOURNAL ◽

10.24191/abrij.v3i2.10092 ◽

2017 ◽

Vol 3 (2) ◽

pp. 7

Author(s):

Saida Parvin

Keyword(s):

Women's Empowerment ◽

Assessment Tools ◽

Women’S Empowerment ◽

Case Study Method ◽

Policy Makers ◽

Theoretical Contribution ◽

Donor Agencies ◽

Definition Of ◽

The Impact

Women’s empowerment has been at the centre of research focus for many decades. Extant literature examined the process, outcome and various challenges. Some claimed substantial success, while others contradicted with evidence of failure. But the success remains a matter of debate due to lack of empirical evidence of actual empowerment of women around the world. The current study aimed to address this gap by taking a case study method. The study critically evaluates 20 cases carefully sampled to include representatives from the entire country of Bangladesh. The study demonstrates popular beliefs about microfinance often misguide even the borrowers and they start living in a fabricated feeling of empowerment, facing real challenges to achieve true empowerment in their lives. The impact of this finding is twofold; firstly there is a theoretical contribution, where the definition of women’s empowerment is proposed to be revisited considering findings from these cases. And lastly, the policy makers at governmental and non-governmental organisations, and multinational donor agencies need to revise their assessment tools for funding.

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The Impact of the Regulatory Environment on the Definition of the Best Interests of the Corporation

SSRN Electronic Journal ◽

10.2139/ssrn.2247434 ◽

2012 ◽

Cited By ~ 1

Author(s):

Isabelle Martin

Keyword(s):

Best Interests ◽

Regulatory Environment ◽

Definition Of ◽

The Impact

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Defining Preterm Birth and Stillbirth in the Western Pacific: A Systematic Review

Asia Pacific Journal of Public Health ◽

10.1177/10105395211026099 ◽

2021 ◽

pp. 101053952110260

Author(s):

Mairead Connolly ◽

Laura Phung ◽

Elise Farrington ◽

Michelle J. L. Scoullar ◽

Alyce N. Wilson ◽

...

Keyword(s):

Preterm Birth ◽

National Level ◽

Health Indicators ◽

Western Pacific ◽

World Health ◽

Middle Income ◽

Middle Income Countries ◽

Definition Of ◽

Health Organization ◽

The Impact

Preterm birth and stillbirth are important global perinatal health indicators. Definitions of these indicators can differ between countries, affecting comparability of preterm birth and stillbirth rates across countries. This study aimed to document national-level adherence to World Health Organization (WHO) definitions of preterm birth and stillbirth in the WHO Western Pacific region. A systematic search of government health websites and 4 electronic databases was conducted. Any official report or published study describing the national definition of preterm birth or stillbirth published between 2000 and 2020 was eligible for inclusion. A total of 58 data sources from 21 countries were identified. There was considerable variation in how preterm birth and stillbirth was defined across the region. The most frequently used lower gestational age threshold for viability of preterm birth was 28 weeks gestation (range 20-28 weeks), and stillbirth was most frequently classified from 20 weeks gestation (range 12-28 weeks). High-income countries more frequently used earlier gestational ages for preterm birth and stillbirth compared with low- to middle-income countries. The findings highlight the importance of clear, standardized, internationally comparable definitions for perinatal indicators. Further research is needed to determine the impact on regional preterm birth and stillbirth rates.

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Value assessment of antimicrobials and the implications for development, access, and funding of effective treatments: Australian stakeholder perspective

International Journal of Technology Assessment in Health Care ◽

10.1017/s0266462320000823 ◽

2020 ◽

pp. 1-7

Author(s):

Nadine T. Hillock ◽

Tracy L. Merlin ◽

Jonathan Karnon ◽

John Turnidge ◽

Jaklin Eliott

Keyword(s):

Cost Effectiveness ◽

Healthcare Resource ◽

Economic Evaluations ◽

Value Assessment ◽

Antimicrobial Drugs ◽

Policy Makers ◽

Stakeholder Perspective ◽

Definition Of ◽

The Impact ◽

Potential Use

Abstract Background The frameworks used by Health Technology Assessment (HTA) agencies for value assessment of medicines aim to optimize healthcare resource allocation. However, they may not be effective at capturing the value of antimicrobial drugs. Objectives To analyze stakeholder perceptions regarding how antimicrobials are assessed for value for reimbursement purposes and how the Australian HTA framework accommodates the unique attributes of antimicrobials in cost-effectiveness evaluation. Methods Eighteen individuals representing the pharmaceutical industry or policy-makers were interviewed. Interviews were transcribed verbatim, coded, and thematically analyzed. Results Key emergent themes were that reimbursement decision-making should consider the antibiotic spectrum when assessing value, risk of shortages, the impact of procurement processes on low-priced comparators, and the need for methodological transparency when antimicrobials are incorporated into the economic evaluation of other treatments. Conclusions Participants agreed that the current HTA framework for antimicrobial value assessment is inadequate to properly inform funding decisions, as the contemporary definition of cost-effectiveness fails to explicitly incorporate the risk of future resistance. Policy-makers were uncertain about how to incorporate future resistance into economic evaluations without a systematic method to capture costs avoided due to good stewardship. Lacking financial reward for the benefits of narrower-spectrum antimicrobials, companies will likely focus on developing broad-spectrum agents with wider potential use. The perceived risks of shortages have influenced the funding of generic antimicrobials in Australia, with policy-makers suggesting a willingness to pay more for assured supply. Although antibiotics often underpin the effectiveness of other medicines, it is unclear how this is incorporated into economic models.

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Fleet Resilience: Evaluating Maintenance Strategies in Critical Equipment

Applied Sciences ◽

10.3390/app11010038 ◽

2020 ◽

Vol 11 (1) ◽

pp. 38

Author(s):

Orlando Durán ◽

Javier Aguilar ◽

Andrea Capaldo ◽

Adolfo Arata

Keyword(s):

Application Study ◽

System Availability ◽

Maintenance Strategies ◽

Resilience Index ◽

Reliability Block Diagrams ◽

Maintenance Policies ◽

Definition Of ◽

The Impact ◽

Important System ◽

Intrinsic Characteristic

Resilience is an intrinsic characteristic of systems. Through it, the capacity of a system to react to the existence of disruptive events is expressed. A series of metrics to represent systems’ resilience have been proposed, however, only one indicator relates the availability of the system to this characteristic. With such a metric, it is possible to relate the topological aspects of a system and the resources available in order to be able to promptly respond to the loss of performance as a result of unexpected events. This work proposes the adaptation and application of such a resilience index to assess the influence of different maintenance strategies and topologies in fleets’ resilience. In addition, an application study considering an actual mining fleet is provided. A set of critical assets was identified and represented using reliability block diagrams. Monte Carlo simulation experiments were conducted and the system availability data were extracted. Resilience indexes were obtained in order to carry out the definition of the best maintenance policies in critical equipment and the assessment of the impact of modifying system redundancies. The main results of this work lead to the overall conclusion that redundancy is an important system attribute in order to improve resiliency along time.

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