Bibliographies thématiques / Candidate Reference Material

Littérature scientifique sur le sujet « Candidate Reference Material »

Auteur : Grafiati
Publié le 14 mars 2023

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Articles de revues sur le sujet "Candidate Reference Material"

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Neuer, Günther, Rüdiger Brandt, Kosta Maglić, Nenad Milošević, Gerhard Groboth et Steffen Rudtsch. « Thermal diffusivity of the candidate standard reference material cordierite ». High Temperatures-High Pressures 31, no 5 (1999) : 517–24. http://dx.doi.org/10.1068/htrt172.

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Forte, Giovanni, Sonia D’Ilio et Sergio Caroli. « Honey as a Candidate Reference Material for Trace Elements ». Journal of AOAC INTERNATIONAL 84, no 6 (1 novembre 2001) : 1972–75. http://dx.doi.org/10.1093/jaoac/84.6.1972.

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Abstract The feasibility of producing and certifying new certified reference materials (CRMs) for trace elements in honey was investigated. Preliminary steps for preparation of candidate materials are performed at the Institute for Reference Materials and Measurements, Joint Research Centre of the European Commission (EC-JRC-IRMM). Two different types of honey, Acacia and Eucalyptus, were tested for determination of 10 trace elements. To each type of honey was added a given amount of high purity deionized water to obtain aqueous solutions with an acceptable degree of homogeneity which would require only minimal manipulation before analysis. Average values obtained for the trace elements by means of inductively coupled plasma-based techniques were as follows (in μg/kg ± SD): Acacia honey, As, 1.10 ± 0.20; Cd, 0.328 ± 0.035; Cr, 1.90 ± 0.22; Cu, 67.0 ± 5; Fe, 215 ± 30; Hg, < 0.75; Mn, 82.1 ± 6.2; Ni, 21.0 ± 3.0; Pb, 2.30 ± 0.25; Se, 9.10 ± 1.2; Zn, 167 ± 22; Eucalyptus honey, As, 5.99 ± 0.10; Cd, 0.592 ± 0.074; Cr, 1.50 ± 0.07; Cu, 219 ± 24; Fe, 1008 ± 114; Hg, <0.75; Mn, 1009 ± 51; Ni, 11.3 ± 1.5; Pb, 5.00 ± 0.40; Se, 5.60 ± 0.91; Zn, 791 ± 91. When these 2 pilot materials are ready, the certification project will be launched in full compliance with current rules set by EC-JRC-IRMM. If the project is successful, the new CRMs will be put primarily at the disposal of the National Reference Laboratories for trace elements.
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Ulrich, J. C., J. E. S. Sarkis et M. A. Hortellani. « Homogeneity study of candidate reference material in fish matrix ». Journal of Physics : Conference Series 575 (6 janvier 2015) : 012040. http://dx.doi.org/10.1088/1742-6596/575/1/012040.

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Castro, Liliana, Edson G. Moreira, Marina B. A. Vasconcellos, Camila N. Lange, Tatiana Pedron et Bruno L. Batista. « Stability assessment of a bovine kidney reference-material candidate ». Journal of Radioanalytical and Nuclear Chemistry 317, no 2 (31 mai 2018) : 1133–39. http://dx.doi.org/10.1007/s10967-018-5928-8.

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Diepeveen, Laura E., Coby M. M. Laarakkers, Gustavo Martos, Marta E. Pawlak, Fatih F. Uğuz, Kim E. S. A. Verberne, Rachel P. L. van Swelm et al. « Provisional standardization of hepcidin assays : creating a traceability chain with a primary reference material, candidate reference method and a commutable secondary reference material ». Clinical Chemistry and Laboratory Medicine (CCLM) 57, no 6 (27 mai 2019) : 864–72. http://dx.doi.org/10.1515/cclm-2018-0783.

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Abstract Background Hepcidin concentrations measured by various methods differ considerably, complicating interpretation. Here, a previously identified plasma-based candidate secondary reference material (csRM) was modified into a serum-based two-leveled sRM. We validated its functionality to increase the equivalence between methods for international standardization. Methods We applied technical procedures developed by the International Consortium for Harmonization of Clinical Laboratory Results. The sRM, consisting of lyophilized serum with cryolyoprotectant, appeared commutable among nine different measurement procedures using 16 native human serum samples in a first round robin (RR1). Harmonization potential of the sRM was simulated in RR1 and evaluated in practice in RR2 among 11 measurement procedures using three native human plasma samples. Comprehensive purity analysis of a candidate primary RM (cpRM) was performed by state of the art procedures. The sRM was value assigned with an isotope dilution mass spectrometry-based candidate reference method calibrated using the certified pRM. Results The inter-assay CV without harmonization was 42.1% and 52.8% in RR1 and RR2, respectively. In RR1, simulation of harmonization with sRM resulted in an inter-assay CV of 11.0%, whereas in RR2 calibration with the material resulted in an inter-assay CV of 19.1%. Both the sRM and pRM passed international homogeneity criteria and showed long-term stability. We assigned values to the low (0.95±0.11 nmol/L) and middle concentration (3.75±0.17 nmol/L) calibrators of the sRM. Conclusions Standardization of hepcidin is possible with our sRM, which value is assigned by a pRM. We propose the implementation of this material as an international calibrator for hepcidin.
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Nogueira, Raquel, Eliane Cristina Pires do Rego, Marcus Vinicius Barreto Sousa, Wagner Wollinger, Thaís Elias da Silva, Gabriela Fernandes Moreira, Juliano Smanioto Barin et al. « Development studies of captopril certified reference material ». Brazilian Journal of Pharmaceutical Sciences 47, no 2 (juin 2011) : 339–50. http://dx.doi.org/10.1590/s1984-82502011000200015.

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This paper describes the studies performed with the candidate Certified Reference Material (CRM) of captopril, the first CRM of an active pharmaceutical ingredient (API) in Brazil, including determination of impurities (organic, inorganic and volatiles), homogeneity testing, short- and long-term stability studies, calculation of captopril content using the mass balance approach, and estimation of the associated measurement uncertainty.
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Bianchi, S. R., A. M. J. Peixoto, G. B. Souza, R. R. Tullio et A. R. A. Nogueira. « Production and characterization of a bovine liver candidate reference material ». Journal of Physics : Conference Series 733 (juillet 2016) : 012006. http://dx.doi.org/10.1088/1742-6596/733/1/012006.

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Zeisler, R., R. L. Paul, R. Oflaz Spatz, L. L. Yu, J. L. Mann, W. R. Kelly, B. E. Lang, S. D. Leigh et J. Fagan. « Elemental analysis of a single-wall carbon nanotube candidate reference material ». Analytical and Bioanalytical Chemistry 399, no 1 (15 octobre 2010) : 509–17. http://dx.doi.org/10.1007/s00216-010-4275-6.

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Pauwels, J., U. Kurf�rst, K. H. Grobecker et P. Quevauviller. « Microhomogeneity study of BCR candidate reference material CRM-422 ? cod muscle ». Fresenius' Journal of Analytical Chemistry 345, no 7 (1993) : 478–81. http://dx.doi.org/10.1007/bf00326336.

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Yuanxun, Zhang, Qian Yine, Li Deyi, Wang Yinsong et Wang Xuepeng. « Development of IAEA-386 bovine liver candidate reference material in SINR ». Journal of Radioanalytical and Nuclear Chemistry 231, no 1-2 (mai 1998) : 195–97. http://dx.doi.org/10.1007/bf02388033.

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Thèses sur le sujet "Candidate Reference Material"

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Marcki, Danieli Cristina. « Desenvolvimento de candidato a material de referência certificado para Uísque : um material eficaz para a garantia da qualidade e manutenção da ISO/IEC 17025 em Laboratórios de Ensaio ». Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/75/75135/tde-28072017-171631/.

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Atualmente, a produção de Material de Referência Certificado (MRC) tem apresentado destaque devido a sua importância na aplicação durante a validação de métodos, estimativa de incerteza e controles de rotina, atendendo uma grande demanda de laboratórios que aplicam sistemas de gestão da qualidade (como por exemplo, baseados na ISO/IEC 17025) e necessitam desenvolver estas atividades em busca da rastreabilidade metrológica. Dentre estes diferentes laboratórios, podemos destacar os laboratórios de bebidas que analisam, por exemplo, contaminantes em uísque visando um monitoramento adequado deste produto de grande consumo interno, seja de produtos importados e/ou produção nacional. Desta maneira este projeto visa o desenvolvimento de candidato a material de referência certificado (MRC) para Uísque, considerando a importância em desenvolver métodos para a produção de material de referência, sendo o uísque um excelente candidato devido à importância em monitorar adequadamente este produto que tem apresentado um crescimento exponencial de consumo nos últimos anos.
Currently, the production of CRM has been highlighted due to its importance in method validation, uncertainty measurement and routine controls, necessary for laboratories that apply quality management systems (e.g. based on ISO/IEC 17025) and need to develop these activities to achieve an adequate metrological traceability. Among these different laboratories, we can highlight the beverage laboratory that analyses, for example, contaminants in whiskey to ensure an appropriate monitoring of this product that has great domestic consumption. This project aims the development of a candidate certified reference material (CRM) for whiskey, considering the importance of developing methods for the production of reference material, being the whiskey an excellent candidate because of its importance to properly monitor this product that has shown an exponential growth of consumption in recent years.
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Carneiro, Eliane Margareth Pimenta. « Produção de materiais de referência candidatos à certificação em bioquímica laboratorial : soro equino para controle de qualidade nos laboratórios de saúde pública ». Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/5/5160/tde-23042018-132539/.

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A participação de laboratórios nacionais em ensaios de proficiência internacionais expõe a fragilidade técnica na produção de Materiais de Referência (MR) no Brasil, devido à insuficiência desse tipo de material, tanto para ensaio de proficiência quanto para a rotina laboratorial. A capacitação de um Laboratório Central de Saúde Pública (LACEN) como produtor de MR, em bioquímica laboratorial, permitirá a disponibilização para toda rede de laboratórios públicos do estado de São Paulo, contribuindo na melhoria da qualidade das análises laboratoriais em bioquímica. A Secretaria de Estado da Saúde (SES) poderá padronizar a qualidade desses exames em toda rede pública estadual, detendo a tecnologia necessária para o controle de qualidade. O objetivo desse estudo foi mostrar a viabilidade de produção de MR candidatos à certificação para os perfis: lipídico, renal, hepático, glicêmico, cardíaco e ósseo e a utilização como controle de qualidade em laboratórios clínicos de bioquímica. A produção foi feita a partir de soro de origem animal, estabilizado e liofilizado, com caráter específico para dosagens bioquímicas, seja em metodologia manual, semi-automatizada ou automatizada. Para a análise quantitativa dos dados foi utilizado o aplicativo Action Act versão 8.2.1. O modelo possibilitará o uso para desenvolvimento de outros programas de ensaio de proficiência. A implementação resultará em um ganho de qualidade a baixo custo e incentivo para a implantação de sistemas de qualidade que garantam a confiabilidade dos exames laboratoriais da rede de laboratórios públicos estadual
The participation of national laboratories in International Proficiency Testing demonstrates the technical weakness in the production of Reference Materials (RM) in Brazil, due to the failure of this type of material for use both as proficiency testing for the routine laboratory. It is vital to encourage training providers to produce reference materials control serum, high quality and low cost in clinical biochemistry and encourage the implementation of quality systems to ensure the reliability of clinical laboratory. Accreditation biochemical testing and qualification of a Central Public Health Laboratory (LACEN) as a producer of Reference Materials for proficiency testing in clinical biochemistry allow it to be available for the entire network of public laboratories in the State of São Paulo, contributing to improving the quality of laboratory analyzes biochemical processes for measurands and accredited. The State may standardize the quality of clinical examinations in all public schools, holding the technology needed to quality control. The aim of this study is to show the viability of producing candidates for certification for the profiles: renal, hepatic, lipid, glucose, cardiac and bone and the use in biochemistry laboratories. The reference material in biochemistry will be produced from biological material of animal origin, stabilized and lyophilized serum with specific character to be used in biochemical, whether in methodology manual, semi-automated or automated. For the quantitative analysis of the data the Action Act version 8.2.1 application was used. The implementation will result in a gain of quality at low cost and incentive for the implementation of quality systems to ensure the reliability of laboratory tests of state public health laboratories network
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Livres sur le sujet "Candidate Reference Material"

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Smith, David R. Microporous fumed-silica insulation board as a candidate Standard Reference Material of thermal resistance. Boulder, Colo : U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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Hust, J. G. Fibrous alumina-silica insulation board as a candidate Standard Reference Material of thermal resistance. Boulder, Colo : U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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Hust, J. G. Fibrous alumina-silica insulation board as a candidate Standard Reference Material of thermal resistance. Boulder, Colo : U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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Smith, David R. Microporous fumed-silica insulation board as a candidate Standard Reference Material of thermal resistance. Boulder, Colo : U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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Hust, J. G. Fibrous alumina-silica insulation board as a candidate Standard Reference Material of thermal resistance. Boulder, Colo : U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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Smith, David R. Microporous fumed-silica insulation board as a candidate Standard Reference Material of thermal resistance. Boulder, Colo : U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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Smith, David R. Microporous fumed-silica insulation board as a candidate Standard Reference Material of thermal resistance. Boulder, Colo : U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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Hust, J. G. Fibrous alumina-silica insulation board as a candidate Standard Reference Material of thermal resistance. Boulder, Colo : U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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Hust, J. G. Fibrous alumina-silica insulation board as a candidate Standard Reference Material of thermal resistance. Boulder, Colo : U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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Smith, David R. Microporous fumed-silica insulation board as a candidate Standard Reference Material of thermal resistance. Boulder, Colo : U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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Chapitres de livres sur le sujet "Candidate Reference Material"

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« Homogeneity and stability testing of a candidate reference material for the determination of total arsenic in tuna fish sample ». Dans Understanding the Geological and Medical Interface of Arsenic - As 2012, 420–22. CRC Press, 2012. http://dx.doi.org/10.1201/b12522-151.

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Olabi, A. G. « Research in Candidate Materials ». Dans Reference Module in Materials Science and Materials Engineering. Elsevier, 2016. http://dx.doi.org/10.1016/b978-0-12-803581-8.04098-4.

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Dorr, Cian, John Hawthorne et Juhani Yli-Vakkuri. « Resolving the Puzzles : Plasticity and Plenitude ». Dans The Bounds of Possibility, 262–90. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780192846655.003.0012.

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This chapter develops a strategy for resolving Tolerance Puzzles based on two central ideas. The first idea is a principle of ‘plenitude’, according to which any given material objects coincides with innumerably many others differing from it in a wide variety of modal respects. The second idea is that because of this plenitude of candidate referents, the singular terms (like ‘this table’) and common nouns (like ‘table’) that feature in Tolerance Puzzles are subject to a high degree of semantic plasticity: small changes in the world, e.g. in the selection of parts to be made into tables, suffice to make a difference to what we refer to with these words. Such plasticity undermines the Security Argument for Non-contingency developed in chapter 2, by suggesting that even though Tolerance could easily have been false, Tolerance speeches robustly express truths.
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Sudhir Kumar Sinha, Akhoury, et Umaprasana Ojha. « Recent Trends in Development of Metal Nitride Nanocatalysts for Water Electrolysis Application ». Dans Electrocatalysis [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95748.

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Nanocatalysts for sustainable water electrolysis is strongly desirable to promote the commercialization of H2 as the alternate clean energy source for the future. The goal is cheaper hydrogen production from sea and low grade water by minimizing the energy consumption and using low cost cell components & non-noble metal catalysts. The conductivity of metal nitrides and their ability to carry out Hydrogen Evolution Reaction and Oxygen Evolution Reaction at relatively low overpotential render these one of the frontline candidates to be potentially utilized as the catalyst for low cost H2 production via electrolysis. In this chapter, the potential of metal nitride catalyst towards fulfilling the above objective is discussed. The synthesis of various metal nitride catalysts, their efficiency towards electrode half reactions and the effectiveness of these class of nanocatalyst for electrolysis of sea water is elaborated. A review of recent literature with special reference to the catalyst systems based on non-noble metals will be provided to assess the likelihood of these nanocatalyst to serve as a commercial grade electrode material for sea water electrolysis.
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Actes de conférences sur le sujet "Candidate Reference Material"

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Damastuti, Endah, Syukria Kurniawati, Natalia Adventini, Woro Yatu Niken Syahfitri, Diah Dwiana Lestiani et Muhayatun Santoso. « Homogeneity and stability assessment of bottom ash reference material candidate ». Dans 2ND INTERNATIONAL CONFERENCE ON ENERGETICS, CIVIL AND AGRICULTURAL ENGINEERING 2021 (ICECAE 2021). AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0110137.

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Rohyami, Yuli, Ade Irma Yuliani et Hezna Intan Firdiyanti. « Recrystallization of sodium chloride as the candidate of in-house reference material ». Dans 2ND INTERNATIONAL CONFERENCE ON CHEMISTRY, CHEMICAL PROCESS AND ENGINEERING (IC3PE). Author(s), 2018. http://dx.doi.org/10.1063/1.5065012.

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Dunkers, Joy P., Stefan D. Leigh, Marcus T. Cicerone, Forrest A. Landis, Francis W. Wang et John A. Tesk. « NIST Development of Reference Material Scaffolds for Tissue Engineering ». Dans ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-82012.

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In consultation with ASTM and other stakeholders in Tissue-Engineered Medical Products (TEMPs) industry, the National Institute of Standards and Technology (NIST) initiated a project designed to produce Reference Material scaffolds for tissue engineering. The rationale for Reference Material scaffolds was developed through several NIST/Industry workshops. In brief, Reference Material scaffolds have multiple uses: facilitating the development and the validation of new test methods that measure interactions among various components of a TEMP; comparison with other scaffolds and scaffold materials in terms of cellular responses, biodegradation, and releases of growth factors; and comparisons of responses among various cell lines. The primary customers for Reference Material scaffolds are expected to be the TEMPs industry, academic researchers, regulators, and standards developing organizations. There are many properties of a TEMP that warrant development of multiple Reference Material scaffolds. Currently, NIST is defining a set of Reference Material scaffolds based on geometric descriptors such as permeability, pore volume, pore size distribution, interconnectivity, and tortuosity. In consultation with ASTM, NIST is testing three candidate scaffolds produced by: three dimensional (3-D) printing, stereolithography, and fused deposition modeling (FDM). Scaffolds made by these methods have been obtained from Mayo Clinic (Rochester, MN), Case Western Reserve University (CWRU) (Cleveland, OH), and Osteopore International (Singapore), respectively, for structural characterization. These prototype scaffolds, with well-defined architectures, have been selected to address the following items of interest: 1) establishment of useful functional definitions of porosity content, interconnectivity, and pores; 2) evaluation of testing methods listed in the Standard Guide for the Porosity of Polymeric Scaffolds for Use in Tissue-Engineered Medical Products, which is being drafted by ASTM. Currently, NIST and the Center for Devices and Radiological Health of the Food and Drug Administration, as well as other groups from US and foreign laboratories, are actively carrying out cross-validation test of these prototype scaffolds.
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Nordstad, Simon, Roald Tagle et Falk Reinhardt. « Homogeneity Test on a Candidate Microanalytical Mn-nodule Reference Material Using Micro X-Ray Fluourescence Spectroscopy (µXRF) ». Dans Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.1946.

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Ulrich, João Cristiano, et Jorge Eduardo de Souza Sarkis. « Estimation of uncertainty to the homogeneity study in the certification of a candidate certified reference material in fish matrix ». Dans 16th International Congress of Metrology. Les Ulis, France : EDP Sciences, 2013. http://dx.doi.org/10.1051/metrology/201316002.

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Kamali, Mohammadreza, Mahmoud Khalifeh, Arild Saasen, Laurent Delabroy et Rune Godøy. « Materials for Well Integrity – Rheological Behavior Study ». Dans SPE Norway Subsurface Conference. SPE, 2022. http://dx.doi.org/10.2118/209556-ms.

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Abstract Ordinary Portland cement has been the prime material used for well cementing and permanent well- abandonment. Occasionally, the properties of the Portland cement can be inadequate to fulfil the necessary requirements. Hence, alternative barrier materials have been suggested for use in primary cementing and permanent well-abandonment. Among these, geopolymers, expansive cement, pozzolan based material, and thermosetting resins can be good alternatives. This article presents the fluid properties and rheological behavior of the above-mentioned alternative materials. API neat class G cement is used as a reference material to compare the obtained results. Through this study, the bottom-hole circulating temperature (BHCT) and bottom-hole static temperature (BHST) are selected to be 65 and 90°C, respectively. The pressure is 2500 psi. These conditions are representative for most wells on the Norwegian continental shelf. The initial results include viscosity profile at BHCT, the effect of pressure on thickening time, and intensity of static fluid loss. Our results show that the barrier materials have their pros and cons. One material might be good for an application such as a squeeze cementing job while the other one may not fit this application. The viscosity measurements showed all the candidate barrier materials to be shear-thinning to some degree. Except for the pozzolan based sealant, all other selected materials presented right angle set and pressure- dependent consistency.
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Kamali, Mohammadreza, Mahmoud Khalifeh, Arild Saasen et Paulo Henrique Silva Santos Moreira. « Long-Term Mechanical Properties of Barrier Materials for Cementing Operations – Analysis of Morphology and Micro-Structure ». Dans ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/omae2022-78634.

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Abstract In the oil and gas and geothermal industry, a barrier material is pumped behind the casing to fill the annular gap between the casing and formation/outer casing. After placement, this slurry is solidified rapidly, and it functions to seal the annular space and protects the casing during the lifecycle of the well. In this article, four different barrier materials namely expansive cement, non-cement pozzolan-based material, geopolymer, and thermosetting resin are examined under equal conditions. The long-term mechanical properties of the candidate materials were tested by measuring uniaxial compressive strength (UCS), tensile strength, and Young’s modulus. These properties were measured at seven different time intervals, from one day to nine months after curing at a bottomhole static temperature of 90 °C and pressure of 170 bars. The change in the mechanical properties was further investigated by using scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS) techniques. The results were benchmarked with the properties of the API neat class G cement as non-commercial reference material. Our results show that the neat class G cement had a consistent behavior in most of the test period, and its UCS was dropped by 23 % after nine months compared to six months. The expansive cement had no significant change in mechanical properties, but the expansive crystal can weaken the structure, especially close to the boundaries with the cement matrix. The pozzolanic material and geopolymer did not develop early strength. The pozzolanic material reached a plateau after seven days, while the geopolymer developed strength up to six months. The thermosetting resin had the highest UCS and tensile strength up to one month, but its mechanical properties were started to deteriorate from seven days after curing.
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Ozawa, Yuji, Tatsuya Ishikawa et Yoichi Takeda. « Characterization of Crack Tip Damage Zone Formation on Alloy 625 During Fatigue Crack Growth at 750°C by Transmission EBSD Method ». Dans ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3458.

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In order to clarify the mechanism of fatigue crack growth in alloy 625, which is a candidate material for use in advanced ultra supercritical power plants, the crack tip damage zone formation after a crack growth test conducted in high temperature steam was investigated. It was observed that the oxide thickness at the crack tip tended to increase with decreasing cyclic loading frequency. The crack path was a mix of transgranular and intergranular fractures. According to the grain reference orientation deviation (GROD) maps, it was revealed that the density of geometrically necessary dislocations (GNDs) in the matrix along the crack path and ahead of crack tip increased with an increase in the fatigue crack growth rate (FCGR) due to environmental effects. It was observed that (1) mobile dislocations at the crack surface were blocked due to the thick oxide layer, resulting in an increase in the density of GNDs, and (2) an increase in the density of GNDs might induce stress concentration at the crack tip, deformation twinning, and the acceleration of FCGRs.
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Kabanov, Denis V., Yulia V. Nesterova et Viktor G. Merkulov. « Certification of biological candidates reference materials by neutron activation analysis ». Dans IV INTERNATIONAL CONFERENCE FOR YOUNG SCIENTISTS, POST-GRADUATE STUDENTS AND STUDENTS : Isotopes : Technologies, Materials and Application (ITMA-2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5027213.

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Al-Hameedi, Abo Taleb Tuama, Husam Hasan Alkinani et Shari Dunn-Norman. « Green Fluid Technology : How Food Wastes Can Revolutionize the Oil and Gas Industry ». Dans SPE/IATMI Asia Pacific Oil & Gas Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/205681-ms.

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Abstract Some conventional drilling fluid additives utilized to adjust drilling fluid properties can lead to many issues related to personnel safety and the environment. Thus, there is a need for alternative materials that have less impact on personnel safety and the environment. Many researchers have begun to investigate new alternatives, one example is food wastes. Due to their eco-friendly properties and their vast availability, food wastes are a good candidate that can be exploited as drilling fluid additives. In this work, five different concentrations of eggshells powder (ESP) were added to a reference fluid and the mud weight was measured using mud balance to understand the effects of ESP on mud weight. The results were compared with five concentrations of two commonly used drilling fluid additives - calcium carbonate (CaCO3) and barite. The findings showed that the drilling fluid blends with ESP have significantly outperformed the drilling fluid blends with barite and CaCO3 and for all concentrations in terms of mud weight improvement. The second best blends in terms of mud weight enhancement were the blends with barite and followed by the blends CaCO3. In conclusion, food waste material - ESP outperforming two of the most common drilling fluid additives shows a potential for ESP and other food wastes to be utilized as drilling mud additives in the petroleum industry. This will reduce the harmful chemicals disposed to the environment, reduce exposure risks of drilling crews to harmful chemicals, minimize drilling fluid cost, and revolutionize the industry while contributing to the economy overall.
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Rapports d'organisations sur le sujet "Candidate Reference Material"

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Smith, David R., et Jerome G. Hust. Microporous fumed-silica insulation board as a candidate Standard Reference Material of thermal resistance. Gaithersburg, MD : National Bureau of Standards, 1988. http://dx.doi.org/10.6028/nist.ir.88-3901.

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Hust, Jerome G., et David R. Smith. Fibrous alumina-silica insulation board as a candidate standard reference material of thermal resistance. Gaithersburg, MD : National Bureau of Standards, 1988. http://dx.doi.org/10.6028/nbs.ir.88-3094.

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Reiner, Jessica L., et Benjamin Place. Interlaboratory Results : Candidate Aqueous Film Forming Foam (AFFF) Reference Materials. National Institute of Standards and Technology, octobre 2021. http://dx.doi.org/10.6028/nist.ir.8399.

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Sen Gupta, J. G., et D. C. Gregoire. Determination of gold and platinum-group elements in some candidate reference materials by GFAAS and ICP-MS. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1993. http://dx.doi.org/10.4095/193291.

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Torres Marin, Alberto, et Daniela Pineda Fernandez. ¿Le cabe algún tipo de responsabilidad al mandatario que incumple la ejecución de su plan de desarrollo en Colombia ? Contraloría General de Antioquia, décembre 2022. http://dx.doi.org/10.58373/obscga.002.

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En los últimos años, los líderes gubernamentales han enfrentado varias denuncias por incumplimiento de los planes de desarrollo regional. Esto causa tal insatisfacción en los electores que inician de procesos de revocatorias que desgastan la figura pública del gobernante. Por ello, el presente artículo analizó la jurisprudencia y la normatividad colombiana, en materia de la responsabilidad de los mandatarios: en lo concerniente a la ejecución de los programas y proyectos enmarcados en los planes de desarrollo local, regional o nacional. La metodología aplicada consiste en un enfoque investigativo, del tipo cualitativo, por medio del rastreo y análisis de la información presente en bases de datos públicas. En específico, considerando la pérdida de confianza de los ciudadanos en las propuestas de programas de gobierno de los candidatos, se realizó un recorrido entre lo normativo y los sucesos históricos del país. Para esto, se examinó el proceso de elección popular, el voto programático, la construcción de un plan de gobierno, el cumplimiento del plan de desarrollo y la posibilidad de un referendo revocatorio. A partir de los resultados obtenidos, se evidencia que aun cuando existen procesos reglamentados para la revocatoria de los gobernantes, no hay una norma legal vigente que determine el grado de responsabilidad para aquel mandatario que incumplió su programa de gobierno por el cual fue elegido y que, más tarde, se convirtió en plan de desarrollo. Por último, se recomienda para futuras investigaciones profundizar en la necesidad de considerar a los ciudadanos como actores cruciales en el seguimiento y control del cumplimiento de los programas de desarrollo.
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