Academic literature on the topic 'PFMG 2025'
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Journal articles on the topic "PFMG 2025":
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Chmielewska, Daria, Magdalena Stania, Grzegorz Sobota, Krystyna Kwaśna, Edward Błaszczak, Jakub Taradaj, and Grzegorz Juras. "Impact of Different Body Positions on Bioelectrical Activity of the Pelvic Floor Muscles in Nulliparous Continent Women." BioMed Research International 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/905897.
Abstract:
We examined pelvic floor muscles (PFM) activity (%MVC) in twenty nulliparous women by body position during exercise as well as the activation of abdominal muscles and the gluteus maximus during voluntary contractions of the PFMs. Pelvic floor muscle activity was recorded using a vaginal probe during five experimental trials. Activation of transversus abdominis, rectus abdominis, and gluteus maximus during voluntary PFM contractions was also assessed. Significant differences in mean normalized amplitudes of baseline PFM activity were revealed between standing and lying (P<0.00024) and lying and ball-sitting positions (P<0.0053). Average peak, average time before peak, and average time after peak did not differ significantly during the voluntary contractions of the PFMs. Baseline PFM activity seemed to depend on the body position and was the highest in standing. Pelvic floor muscles activity during voluntary contractions did not differ by position in continent women. Statistically significant differences between the supine lying and sitting positions were only observed during a sustained 60-second contraction of the PFMs.
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Gu, Xiaoning, Min Yang, Fang Liu, Dongmei Liu, and Fuwen Shi. "Effects of Adding Ultrasound Biofeedback to Individualized Pelvic Floor Muscle Training on Extensibility of the Pelvic Floor Muscle and Anterior Pelvic Organ Prolapse in Postmenopausal Women." Contrast Media & Molecular Imaging 2022 (June 23, 2022): 1–8. http://dx.doi.org/10.1155/2022/4818011.
Abstract:
The aim of the study was to determine effects of adding transperineal ultrasound (TPUS) biofeedback to individualized pelvic floor muscle training (PFMT) on extensibility of the pelvic floor muscle and anterior pelvic organ prolapse (POP) in postmenopausal women. A total of 77 patients with POP at stage I or stage II were admitted to Beijing Shijitan Hospital, China, from January 2017 to October 2018. They were randomly divided into a control group (CG) (n = 37) or a study group (SG) (n = 40). Both SG and CG received a 12-week PFMT including health education, verbal instruction, and home training. However, the SG, but not the CG, received additional TPUS biofeedback. Data of these patients were retrospectively reviewed. The distance from the lowest point of the bladder to the inferior-posterior margin of the symphysis pubis (BSP) and the levator hiatus area (LHA) were measured on maximal Valsalva via TPUS before and after the 12-week PFMT. Correct pelvic floor muscle contraction (PFMC) rates before and after PFMT were compared between the two groups. The correct PFMC rate was higher in the SG than that in the CG (92.5% vs. 73%; x2 = 5.223, p = 0.022 ). The BSP was increased but the LHA was reduced after the 12-week PFMT in both groups compared to those before PFMT (all p < 0.05 ). However, after the PFMT, the SG showed greater improvement than the CG for both BSP (0.77 ± 0.71 cm vs. 0.11 ± 0.66 cm, p < 0.05 ) and LHA (20.69 ± 2.77 cm2 vs. 22.85 ± 3.98 cm2, p < 0.05 ). TPUS might be an effective biofeedback tool for PFMT in clinical practice. Individualized PFMT with TPUS biofeedback could significantly attenuate POP severity and strengthen the extensibility of pelvic floor muscle in postmenopausal women when they are under increased intraabdominal pressure.
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Li, Juan, Xiaoyan Sun, Congyu Wang, Zujuan Zhang, and Zhenwei Xie. "A Mobile Application Penyikang Applied in Postpartum Pelvic Floor Dysfunction: A Cross-Sectional Study to Analyze the Factors Influencing Postpartum Pelvic Floor Muscle Strength and Women’s Participation in Treatment." BioMed Research International 2020 (July 28, 2020): 1–10. http://dx.doi.org/10.1155/2020/4218371.
Abstract:
Objectives. Postpartum pelvic floor muscle (PFM) injuries are the result of pregnancy and delivery, which lead to a series of symptoms requiring long-term follow-up. Mobile health platforms are progressively used for monitoring clinical conditions in medical subjects. This survey was a cross-sectional design based on collecting data from an application (Penyikang). We retrospectively analyzed the risk factors for weak postpartum PFM and further analyzed the factors influencing women’s participation in the treatment which may help to improve the app’s application in the future. Methods. We enrolled postpartum women who gave birth at the Women’s Hospital, Zhejiang University School of Medicine from August to November 2017; trained them to use the app; and collected the demographic and clinical information. This app requires users to fill questionnaires to assess their knowledge of pelvic floor dysfunction (PFD) and pelvic floor muscle training (PFMT) and experience with PFMT, and each therapy evaluation was restored. The relationship between the knowledge of PFMT/PFD, UI symptoms, and PFM strength was analyzed. Cluster analysis was used to define the degree of participation and identify the factors influencing the patients’ participation in intensive therapy and evaluation. Results. 1982 postpartum women who enrolled in the app program were defined as weak PFM. Younger maternal age, cesarean section, and without delivery injury were found as the prognostic factors to PFM strength (both type I and type II muscle fibers) (P<0.05), and higher educational level was also in favor of type II muscle fibers (P<0.05). Patient-reported UI symptoms were associated with weak PFM strength (P<0.05); there were no significant differences between knowledge of PFMT or PDF and PFM strength. Finally, patients with a higher degree of participation were more likely to accept the treatment (P<0.05). Conclusions. The mobile app provides a new applicative way to investigate postpartum PFD. The factors influencing women’s participation can help us focus on strategies to increase the patients’ compliance, and then we will apply the app into more areas to improve the prevention and treatment of postpartum PFD.
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Zhu, Hongmei, Di Zhang, Lei Gao, Huixin Liu, Yonghui Di, Bing Xie, Wei Jiao, and Xiuli Sun. "Effect of Pelvic Floor Workout on Pelvic Floor Muscle Function Recovery of Postpartum Women: Protocol for a Randomized Controlled Trial." International Journal of Environmental Research and Public Health 19, no. 17 (September 4, 2022): 11073. http://dx.doi.org/10.3390/ijerph191711073.
Abstract:
Background: There is a risk of pelvic floor dysfunction (PFD) from baby delivery. Many clinical guidelines recommend pelvic floor muscle training (PFMT) as the conservative treatment for PFD because pelvic floor muscles (PFMs) play a crucial role in development of PFD. However, there is disagreement about the method and intensity of PFM training and the relevant measurements. To pilot the study in PFM training, we designed a Pelvic Floor Workout (PEFLOW) for women to train their pelvic through entire body exercises, and we planned a trial to evaluate its effectiveness through comparing the outcomes from a group of postpartum women who perform PELFLOW at home under professional guidance online with the control group. Methods/design: The randomized controlled trial was projected to be conducted from November 2021 to March 2023. A total of 260 postpartum women would be recruited from the obstetrics departments of the study hospital and women would be eligible for participation randomized into experimental or control groups (EG/CG) if their PFM strength are scaled by less than Modified Oxford grading Scale (MOS) to be less than grade 3. Women in EG would perform a 12-week PEFLOW online under the supervision and guidance of a physiotherapist, while women in CG would have no interventions. Assessments would be conducted at enrollment, post intervention (for EG) or 18th to 24th week postpartum (for CG), and 1 year postpartum. Assessment would be performed in terms of pelvic floor symptoms, including MOS, cough stress test, urinary leakage symptoms, pelvic organ prolapse quantitation (POP-Q), and vaginal relaxation, clinic examinations including Pelvic floor electrophysiological test, Pelvic floor ultrasound and Spine X-ray, overall body test including trunk endurance test, handgrip test, body composition test, and questionnaires including International Physical Activity Questionnaire Score-Short Form(IPAQ-SF), Pelvic Floor Distress Inventory Questionnaire-20 (PFDI-20), Pelvic Floor Impact Questionnaire-7 (PFIQ-7), the 6-item Female Sexual Function Index (FSFI-6), and the Pittsburgh Sleep Quality Index (PSQI). Primary analysis will be performed to test our main hypothesis that PEFLOW is effective with respect to strengthen PFM strength. Discussion: This trial will demonstrate that pelvic floor-care is accessible to most women and clinical practice on PFD may change relevantly should this study find that Online PEFLOW approach is effective to improve PFMs. Trial registration: ClinicalTrials.gov, NCT05218239.
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Varghese, Linda, and Lekha Viswanath. "Pelvic Floor Muscle Exercises for Stress Urinary Incontinence (SUI): A Review Article." Scholars International Journal of Obstetrics and Gynecology 6, no. 02 (February 17, 2023): 79–83. http://dx.doi.org/10.36348/sijog.2023.v06i02.006.
Abstract:
Introduction: The International Continence Society (ICS) describes Urinary incontinence (UI) as the complaint of involuntary leakage of urine and proposes a classification according to the existence of signs and symptoms and mechanisms of occurrence [1, 2]. Purpose: The purpose of this review is to find existing evidence based intervention for Stress Urinary Incontinence (SUI) among women. A preliminary search on Cochrane database, PUBMED, EMBASE, SCOPUS & CINHAL done by the researcher and found relevant studies which provided strong evidence to support role of Pelvic Floor Muscle Exercises (PFME) or Pelvic Floor Muscle Training (PFMT) in reducing symptoms among women diagnosed with SUI. Conclusion: The review concluded that PFMT is a feasible and patient friendly exercise program used for treating SUI with high quality evidence and to be followed under supervision of a health professional. It is also found that less number of recent studies hence suggest having long term studies in future.
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Cramer, Michael, and Wolfgang Kresse. "Editorial PFG 5/2021." PFG – Journal of Photogrammetry, Remote Sensing and Geoinformation Science 89, no. 5 (October 2021): 369. http://dx.doi.org/10.1007/s41064-021-00180-x.
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El-Zayat, Mai M., Maysa A. Mohamed, and Eslam Aboelezz. "Enhancing the physico-mechanical properties of ethylene propylene diene monomer rubber via ץ-radiation in the presence of bi-functional and tri-functional monomers." Radiochimica Acta 110, no. 2 (January 6, 2022): 145–56. http://dx.doi.org/10.1515/ract-2021-1093.
Abstract:
Abstract This study, uses two polyfunctional monomers (PFMs) namely ethylene glycol dimethacrylate (EGDMA) as a bifunctional monomer and trimethylolpropane triacrylate (TMPTA) as a trifunctional monomer were used as co-agents in irradiation crosslinking of Ethylene Propylene Diene Monomer Rubber (EPDM). The effect of concentration of each PFM and irradiation dose on the crosslinking density, gel content, swelling behavior in motor and brake oils, in addition to the mechanical and thermal stability properties of EPDM was investigated in detailed. The results showed a remarkable increase in the gel content, crosslinking density and mechanical properties as the concentration of PFMs increased from 1 to 5 phr (parts per hundred parts of rubber). The various blends of EPDM with the trifunctional monomer express the highest gel content and crosslinking density than those with the bifunctional monomer. The addition of 5 phr of TMPTA to EPDM causes a dramatic improvement in tensile strength (TS) of the prepared blend reached to 188% compared to neat EPDM at 50 kGy. At the same time, the maximum TS of the blend containing 5 phr of EGDMA achieved only 41% compared to neat EPDM at an irradiation dose of 100 kGy. The swelling of irradiated samples in brake oil revealed a stronger oil resistance than motor oil. For all irradiated samples, the oil uptake decreased with the irradiation dose up to 100 kGy. The EPDM samples containing 5 phr of TMPTA recorded the highest oil resistance at 100 kGy. The results also showed that the addition of PFMs and irradiation treatment of the various prepared blends improved the thermal stability of EPDM. Finally, neat EPDM and the blends containing 1 and 3 phr of EGDMA can be used as radiation dosimeters in the very high dose range (50–200 kGy).
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Urvasizoglu, Gelengul, Aybike Bas, Fatma Sarac, Peris Celikel, Fatih Sengul, and Sera Derelioglu. "Assessment of Permanent First Molars in Children Aged 7 to 10 Years Old." Children 10, no. 1 (December 27, 2022): 61. http://dx.doi.org/10.3390/children10010061.
Abstract:
Background: Dental caries is a chronic, infectious and preventable disease that is very common around the world. It has been observed that dental caries affect not only the majority of adults but also 60% to 90% of children. Permanent first molars (PFM) are the most commonly decayed teeth observed in children. Aim: The aim of this study is to evaluate the decayed, missing filled teeth (DMFT) scores of PFMs in the early post-eruptive stage, within the scope of the United Nations Agenda for 2030 Sustainable Development Goals, thereby raising awareness for the prevention and treatment of permanent tooth decay. Methods: This descriptive cross-sectional epidemiological study was conducted in Erzurum between the years 2015–2016 by collecting data from children aged 7–10 years (17,208). In addition to the decayed, filled and missing data of the students’ 6-year-molars, their ages, genders, frequencies of both tooth brushing and dental office visits were evaluated. The relationship between the variables was analyzed with chi-square. Result: The present study analyzed the data of a total of 11,457 children, 5704 girls and 5753 boys with a mean age of 8.74 ± 1.18. There was a statistically significant difference between the PFMs 16, 26, 36 and 46 regarding the number of healthy, decayed, missing and restored teeth (p < 0.001). Conclusion: In this study, the prevalence of caries in the PFMs of children aged 7–10 years was 15.9% and the mean DMFT was 0.79 ± 1.39. This result showed that PFMs might develop carious lesions and even be lost within three years in the early post-eruptive stage.
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Alouini, Souhail, Sejla Memic, and Annabelle Couillandre. "Pelvic Floor Muscle Training for Urinary Incontinence with or without Biofeedback or Electrostimulation in Women: A Systematic Review." International Journal of Environmental Research and Public Health 19, no. 5 (February 27, 2022): 2789. http://dx.doi.org/10.3390/ijerph19052789.
Abstract:
To determine the effectiveness of pelvic floor muscle training (PFMT) with or without biofeedback or electrostimulation in reducing urinary incontinence and pelvic floor muscle con-traction in non-pregnant women with urinary incontinence. Methods: The following electronic databases were searched: PubMed, Cochrane Central, ClinicalTrials.gov, EU Clinical Trials Register, and sources from NICE, FDA, EMA, and SMC (articles only in English, 2000–2021). Search terms were: urinary incontinence, pelvic floor muscle training or exercises, biofeedback, electrostimulation. We used the PRISMA statement (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) for this systematic review. Relevant articles were selected, data were extracted, and quality was assessed. Data were extracted in predesigned form, followed by narrative synthesis. Results: Following the search, 15 RCTs were retrieved using the strict inclusion and exclusion criteria, assessing 2441 non-pregnant women with urinary incontinence. Of the 15 studies, 7 were low risk, 5 were medium risk, and 3 were high-risk studies. Of the 2441 patients, 970 were in PFMT, 69 were in extracorporeal magnetic innervation (ExMi) or with PFMT + BF, 30 were in electrostimulation (ES), 21 were in whole body vibration training (WBVT), 23 were in pelvic floor muscle + abdominal muscle therapy (PFM + AMT), 326 were in PFMT + biofeedback, 93 were in vaginal cones (VC), 362 were in PFMT + education, 318 were in education, and 229 were in control groups. The most often measures employed were pad tests, bladder diary, and questionnaire on the quality of life. Stress, urge and mixed urinary incontinence were studied. In all RCT, PFMT significantly reduced urinary incontinence, essentially SIU and MUI, when compared with the control group before and after treatment. Overall, out of 997 PFMT or PFMT + education patients, 504 patients (50.5%) showed improvement in urinary incontinence, and 218 became continent (21.8%) (negative pad test). In total, 62% of patients significantly reduced their urinary incontinence or cured it and improved their pelvic floor muscle contraction. All other physiotherapist techniques also significantly reduced urinary leakages, e.g., vaginal cones, biofeedback, ExMI, and WBVT when compared with the control group. There were no significant differences between these methods in reducing the severity of urinary incontinence. Conclusion: PFMT alone or with bio-feedback or electrostimulation was effective in reducing urinary incontinence and improving pelvic floor muscle contraction. PFMT when compared with other interventions such as bio-feedback, VC, and WBVT did not show significant differences but was superior to the control group. RCT studies with similar parameters used for measuring the outcomes need to be included.
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Cramer, Michael, and Wolfgang Kresse. "Correction zu: Editorial PFG 5/2021." PFG – Journal of Photogrammetry, Remote Sensing and Geoinformation Science 89, no. 5 (October 2021): 485. http://dx.doi.org/10.1007/s41064-021-00186-5.
Dissertations / Theses on the topic "PFMG 2025":
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Boaventura, Bomfim Daniela. "Mettre en place la médecine de précision au travers d’un essai clinique : le cas du projet pilote en cancérologie du plan France médecine génomique 2025." Electronic Thesis or Diss., Bordeaux, 2023. http://www.theses.fr/2023BORD0472.
Abstract:
Cette recherche doctorale en sociologie a eu pour objectif de suivre le déploiement du Plan France Médecine Génomique 2025 (PFMG 2025) à partir de l'étude d’un de ses projets pilotes en cancérologie, l’essai clinique VERYSARC. Dans le contexte de la médecine de précision, ces types d’essais ont pour objectif de tester l'intégration du séquençage des génomes à haut-débit (NGS) dans la routine du soin. En nous appuyant sur une méthodologie qualitative (entretiens et observation participante) nourrie par la sociologie des sciences et de la santé, l'enquête questionne les frontières entre soin et recherche. L’incorporation de l’essai dans le Plan s’est faite au travers d’un processus de transformation des objectifs initiaux de l’essai. Dans le cadre de cette transformation, l’essai est mobilisé dans diverses rhétoriques technoscientifiques à destination de publics différents (patients, chercheurs, acteurs politiques). Ceci dit, les promesses ne sont pas détachées de la réalité concrète de l’essai qui reste pour la majorité des acteurs du monde hospitalier un grand instrument de recherche défini par une grande complexité organisationnelle. À l’échelle du CLCC, la mise en place de l’essai met en lumière des dysfonctionnements organisationnels. Malgré une longue sociohistoire des liens entre soin et recherche, les CLCC restent un monde social régi par et pour le soin. Les observations ont ainsi permis d’identifier des situations d’asynchronie, malgré l’existence d’un cadre organisationnel dédié à la coordination, qui renvoient encore une fois à la question des frontières entre soin et recherche. Cette complexité est également visible dans les rapports entretenus par les patients inclus dans l’essai. Nous avons identifié des phénomènes d’ignorance, de déficit informationnel et d’illusion thérapeutique. Nous concluons que toutes ces explications renvoient finalement à une situation de non-démarcation des frontières qui est caractérisée par un flou spatio-temporel entre soin et rechercheThis doctoral research in the field of sociology aimed to follow the deployment of the France Genomic Medicine Plan 2025 (PFMG 2025) based on the study of one of its pilot project in oncology, the VERYSARC clinical trial. In the context of precision medicine, these types of trials aim to test the integration of high-throughput genome sequencing (NGS) into routine care. Drawing on a qualitative methodology (interviews and participant observation) informed by the sociology of science and health, the investigation questions the boundaries between care and research. The incorporation of the trial into the Plan was done through a process of transformation of the initial objectives of the trial. As part of this transformation, the essay is mobilized in various technoscientific rhetorics aimed at different audiences (patients, researchers, political actors). That said, the promises are not detached from the concrete reality of the trial which remains for the majority of players in the hospital world a major research instrument defined by great organizational complexity. At the CLCC level, the implementation of the trial highlights organizational dysfunctions. Despite a long socio-history of links between care and research, CLCCs remain a social world governed by and for care. The observations thus made it possible to identify situations of asynchrony, despite the existence of an organizational framework dedicated to coordination, which once again raise the question of the boundaries between care and research. This complexity is also visible in the relationships maintained by the patients included in the trial. We have identified phenomena of ignorance, information deficit and therapeutic illusion. We conclude that all these explanations ultimately refer to a situation of non-demarcation of boundaries which is characterized by a spatio-temporal blur between care and research
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Bulelwa, Tunyiswa. "An Assessment of the Public Finance Management Act, Act 1 of 1999 (PFMA): a case study of the Eastern Cape Department of Education (2005-2012)." Thesis, University of Fort Hare, 2013. http://hdl.handle.net/10353/d1013586.
Abstract:
The Eastern Cape Department of Education consumes a huge chunk of the Eastern Cape provincial budget. Any transgression of the laws that govern how the public purse should be managed - whether overspending, under spending, irregular or wasteful expenditure - has far reaching consequences in terms of service delivery. The Eastern Cape is one of the poorest and most rural provinces in the country and by implication has huge service delivery backlogs .This has been confirmed by various stakeholders and role-players such as Chapter Nine institutions and non-governmental organisations. An observation by the Auditor-General and both the portfolio committees on Public Accounts and Education over the years is the lack of proper controls, especially in financial management. This study presents a case study of the Eastern Cape Department of Education in the financial years 2007-2012 to assess the Public Finance Management Act, Act 1 of 1999 (PFMA). The main objective of this study is to assist the department by putting forward lasting scientific recommendations and solutions that could be integrated into the plans of this department.
Books on the topic "PFMG 2025":
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Civil Society Budget Advocacy Group. Uganda's public finance management compliance index for FY 2016/17: An assessment of Uganda's adherence to the Public Finance Management Act (PFMA), 2015. Ntinda: Civil Society Budget Advocacy Group (CSBAG), 2019.
Book chapters on the topic "PFMG 2025":
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Keling, Song, Fan Lei, Jiang Renjun, Pan Hongyun, Lv Qing, Sun Deshuai, Wang Zhiyuan, and Li Mengyao. "Research on Bi-directional Buck/Boost Soft Switching PWM-PFM Control Strategy." In Proceedings of the 5th International Conference on Electrical Engineering and Information Technologies for Rail Transportation (EITRT) 2021, 535–41. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-9905-4_61.
Conference papers on the topic "PFMG 2025":
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Wallner, Oswald, Klaus Ergenzinger, Rémi Rivière, and Frank Schmülling. "METimage – PFM status report." In International Conference on Space Optics — ICSO 2022, edited by Kyriaki Minoglou, Nikos Karafolas, and Bruno Cugny. SPIE, 2023. http://dx.doi.org/10.1117/12.2689939.
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Dandré, Pierre, Laurent Pirson, Livio Ascani, Gianfranco Sechi, Ernesto Cerone, and Stefano Pessina. "Meteosat Third Generation : first AOCS in flight results from PFM-I1 LEOP and commissioning." In ESA 12th International Conference on Guidance Navigation and Control and 9th International Conference on Astrodynamics Tools and Techniques. ESA, 2023. http://dx.doi.org/10.5270/esa-gnc-icatt-2023-014.
Abstract:
In December 2022, MTG PFM-I1, the first Meteosat Third Generation satellite, aiming at renewing the current Meteosat fleet, was launched on Ariane5 from Kourou, French Guiana. It will be followed by three others MTG-I (Imaging) Satellites and two MTG-S (Sounding) Satellites between 2025 and 2033. The attitude control concept changes from spinning satellites, which was the selected approach for the first and second generations, to a three-axes stabilization, offering better pointing performances as requested by the new generation of Meteosat instruments. The Imaging satellites embark two main instruments: the FCI (Flexible Combine Imager, successor of the MSG instrument, it will offer 16 channels between 0.3 and 13.3 microns, and deliver a full image of Earth every 10 minutes.) developed by Thales Alenia Space and the LI (Lightning Imager) manufactured by LEONARDO, whose objective is the early detection of severe storms as they develop. The MTG-S satellites carry an Infrared Sounder and the Copernicus Sentinel-4 instrument. The two MTG satellites are mounted on a common Platform developed by OHB. Thales Alenia Space leads the industrial consortium that is building the MTG family, with OHB as major partner. The launch has been followed by a LEOP (Launch and Early Orbit Phases) period of 15 days led by EUMETSAT and TELESPAZIO from Fucino in Italy. EUMETSAT and Telespazio was helped by a ESA/TAS/OHB project support team. The handover to EUMETSAT has been achieved in the last days of 2022 after the spacecraft has successfully reached its final position on geostationary orbit and has triggered the mode NOM/FPM (Fine Pointing Mode, very accurate Earth Pointing mode used to performed the observation). The satellite is now ready to undergo an eight months of commissioning activities whose objective will be to assess the satellite and instruments functionality, operability and performance against the space segment requirements. It will include the payloads activation and operability using the Instrument Quality Tool(IQT). This paper presents the AOCS MTG design and the way it has behaved during the LEOP phase, including some lessons learnt for the next FMs. Then it introduces the first main results of the commissioning phase, notably the FPM mode performances after instrument activation (pointing and attitude estimation with STR merging software, RW friction compensation, FCI scan pointing and compensation of instrument disturbance by PF, on-board orbit propagator… ).
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Stefanini, L., C. Versteylen, F. S. L. Pangukir, H. J. Uitslag-Doolaard, and F. H. E. de Haan - de Wilde. "Pressurized Thermal Shock Analysis With Sub-Modeling." In ASME 2021 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/pvp2021-61794.
Abstract:
Abstract In 2020, the CFD analyses have been performed on a whole reactor vessel model. The action of accumulators during the PTS transient was considered. Using these data, an attempt to the efficient use of sub-modelling is carried out in order to obtain a strong reduction in the computational costs compared to a full 3D analysis. The analyses were given a probabilistic view by using the Master Curve approach for determining the material(s) fracture toughness. In parallel with these activities, a literature review work was carried out at NRG. The single temperature dependence of the Master Curve was incorporated into characterizations of fracture toughness for all RPV steels of interest such as SA 508 Grade 3 and Grade 4N for both forging and weld material. The literature review helps to prove that the Master Curve approach models the temperature dependence of fracture toughness for a generic pressure vessel before and after irradiation. This is because all of these steels have a BCC matrix phase lattice structure. Based on ASTM E1921, the types of microstructure falling under a BBC matrix, such as bainite, tempered bainite, tempered martensite, ferrite and pearlite, could also be evaluated using the Master Curve model. Furthermore, it is found that the chemical composition is one of parameter to look for as driving force in embrittlement RPV due to irradiation. For the very high nickel steels examined (SA508 Grade 4N), when not combined with copper and moderate manganese, irradiation is not a serious embrittling agent. This paper describes the work performed at NRG in the years 2017–2020 in investigting the Pressurized Thermal Shock (PTS) phenomenon, summarizes the achievements and gives a general judgement of the lessons learned. Moreover, this paper aims to illustrate the scope of planned research on PTS and its role in the new NRG research program PIONIER 2021–2024. An overview of NRG’s effort to align itself with the international community is given. Particular attention is given to the probabilistic problematic related to PTS. In order to better understand this problematic and improve the current state of knowledge NRG will create a PFM tool. The tool aims to use the best practices from existing PFM software to try to answer to questions requiring attention (e.g. thermal-hydraulic uncertainty). The experience accumulated during the previous activities will be included in the tool.
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"Characterizing Ferroelectric Materials with Advanced PFM Methods." In Microscience Microscopy Congress 2023 incorporating EMAG 2023. Royal Microscopical Society, 2023. http://dx.doi.org/10.22443/rms.mmc2023.401.
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Ouaknine, Julien, Catherine Gaudin-Delrieu, Arnaud Liotard, Alessandro Boni, Donny Aminou, and Yannig Durand. "FCI PFM optical test results." In International Conference on Space Optics — ICSO 2021, edited by Zoran Sodnik, Bruno Cugny, and Nikos Karafolas. SPIE, 2021. http://dx.doi.org/10.1117/12.2599151.
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Thomas, B., H. Yang, M. Zappulla, M. Liang, S. Cho, and H. Olia. "Pressure-Drop and Flowrate Model of Slidegate Metal Delivery Systems (PFSG)." In AISTech 2020. AIST, 2020. http://dx.doi.org/10.33313/380/212.
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Ping Xue, Qing Miao, and Guanglei Xiong. "Optical Coherence Tomography: PFMC Model and Endoscopic Probe." In 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference. IEEE, 2005. http://dx.doi.org/10.1109/iembs.2005.1616176.
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Takada, Naoki, Masaki Misawa, and Akio Tomiyama. "A Phase-Field Method for Interface-Tracking Simulation of Two-Phase Flows." In ASME 2005 Fluids Engineering Division Summer Meeting. ASMEDC, 2005. http://dx.doi.org/10.1115/fedsm2005-77367.
Abstract:
For interface-tracking simulation of two-phase flows, we propose a new computational method, NS-PFM, combining Navier-Stokes (NS) equations with phase-field model (PFM). Based on the free energy theory, PFM describes an interface as a volumetric zone across which physical properties vary continuously. Surface tension is defined as an excessive free energy per unit area induced by density gradient. Consequently, PFM simplifies the interface-tracking procedure by use of a standard technique. The proposed NS-PFM was applied to several problems of incompressible, isothermal two-phase flow with the same density ratio as that of an air-water system. In this method, the Cahn-Hilliard (CH) equation was used for predicting interface configuration. It was confirmed through numerical simulations that (1) the flux driven by chemical potential gradient in the CH equation plays an important role in interfacial advection and reconstruction, (2) the NS-PFM gives good predictions for pressure increase inside a bubble caused by the surface tension, (3) coalescence of liquid film and single drop falling through a stagnant gas was well simulated, and (4) collapse of liquid column under gravity was predicted in good agreement with other available data. Then, another version of NS-PFM was proposed and applied to a direct simulation of bubble nucleation of a non-ideal fluid in the vicinity of the critical point, which demonstrated the capability of NS-PFM to capture liquid-vapor interface motion in boiling and condensation.
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Xu, Steven X., David L. Rudland, and Douglas A. Scarth. "A Review of Current Best Practice for Validation of Probabilistic Fracture Mechanics Codes for Assessment of Nuclear Structural Integrity." In ASME 2023 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/pvp2023-107513.
Abstract:
Abstract Probabilistic fracture mechanics (PFM) based computer codes are increasingly used to evaluate integrity of structural components and systems in nuclear power plants. For example, FAVOR (Fracture Analysis of Vessels – Oak Ridge) is a PFM code for structural integrity of a nuclear reactor pressure vessel, xLPR (eXtremely Low Probability of Rupture) is a PFM code for leak-before-break evaluation of nuclear piping systems due to active corrosion damage, such as primary water stress corrosion cracking (PWSCC). These PFM based computer codes are designed to predict the probability of failure for nuclear structures. Verification and validation are essential to ensure the accuracy and credibility of a PFM based computer code. Validation is the process of determining the degree to which a model is an accurate representation of the real world from the perspective of the intended uses of the computer code. It provides evidence for how accurately the computer code simulates the real world for the system responses of interest. This conference paper provides a review of current best practice for validation of PFM codes for assessment of nuclear structural integrity. The review is based on information available in the open literature.
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Miyashiro, Satoshi, Takayuki Sakai, Masaki Nagai, and Masato Yamamoto. "Evaluation of Crack Initiation Probability by FERMAT Code in Conformity With the Procedure by a Japanese Industrial PFM Guideline." In ASME 2023 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/pvp2023-106288.
Abstract:
Abstract The implementation of probabilistic fracture mechanics (PFM) on integrity assessment standards of reactor pressure vessels (RPVs) is not yet actualized in Japan. The most recent information on how PFM will be used in the near future is provided by the guideline JEAG 4640-2018, which describes a standard approach for evaluating the failure frequency of RPVs based on PFM. Central Research Institute of Electric Power Industry is creating a new PFM analysis code FERMAT (Fracture mechanics Evaluation of RPV MATerials) for future application of PFM in Japan. Our code is based on JEAG 4640-2018 and has a minimum design for practical usage in RPV structural integrity assessments. With a graphical user interface, all processes can be handled in a single piece of code. In the present study, calculation results by FERMAT were compared with another Japanese PFM code PASCAL4 with a model case targeting Japanese RPV. The distribution of temperature and stress evaluated by FERMAT and PASCAL4 were very similar. The stress intensity factor calculated by FERMAT and PASCAL4 was well corresponding with each other. Additionally, sampled values for reference temperature for nil-ductile transition were confirmed. The probability and the frequency of crack initiation were compared between FERMAT and PASCAL4. The outcomes assessed using those codes were closely related to one another.
Reports on the topic "PFMG 2025":
1
Cuestas, Ernesto, Sumiko Andrade Sakaguchi, Laura Miranda, Gabriela Pérez, José Carbajo, Hans-Peter Lankes, and Ana María Linares. Approach Paper: Stocktaking of Private Finance Mobilization at the IDB Group. Inter-American Development Bank, September 2023. http://dx.doi.org/10.18235/0005115.
Abstract:
This approach paper defines the objective, scope, and methodology for the Office of Evaluation and Oversight's (OVE) stocktaking of Private Finance Mobilization (PFM) at the Inter-American Development Bank Group (IDBG or the Group). This work is included in OVE's 2022-2023 Work Program (document RE-574-1) to address the interest of the IDB and IDB Invest Executive Boards in exploring the Group's experience of mobilizing private finance. This stocktaking will be delivered at a time when the IDBG and its shareholders are looking for innovative ways to mobilize additional financing to support Latin America and the Caribbean (LAC) and meet the Sustainable Development Goals (SDGs). Furthermore, this exercise takes place in a context where the IDBG is developing its new institutional strategy, and IDB Invest is preparing a capitalization proposal, both to be delivered to Governors in the 2024 Annual Meeting.
2
Financial Stability Report - Second Half of 2022. Banco de la República, September 2023. http://dx.doi.org/10.32468/rept-estab-fin.sem2.eng-2022.
Abstract:
Banco de la República’s main goal is to preserve the purchasing power of the currency in coordination with the general economic policy that is intended to stabilize output and employment at long-term sustainable levels. Properly meeting the goal assigned to the Bank by the 1991 Constitution critically depends on preserving financial stability. This is understood to be a general condition in which the financial system evaluates and manages the financial risks in a way that facilitates the suitable performance of the economy and efficient allocation of resources while, at the same time, it is able to absorb, dissipate, and mitigate the appearance of risks that may arise as a result of adverse events. This Financial Stability Report meets the goal of giving Banco de la República’s diagnosis of the financial system’s and its debtors’ recent performance as well as of the main risks and vulnerabilities that could affect the stability of the Colombian economy. The Report is intended to inform the public and the participants in the financial markets about the trends and risks affecting the system and it also intends to promote public debate on this subject. The results presented here also serve as a basis for the monetary authority to assess the effects and risks of monetary policy at the current situation and to adopt measures under its purview to promote financial stability. The analysis presented in this edition of the Report leads to the conclusion that there has been a strong credit trend in Colombia in the last few months that is consistent with the strength of economic activity. Credit continues to grow (in all its categories and especially in consumer loans) while past-due and risky loans continue to decline for the aggregate portfolio. In general terms, the favorable performance of credit establishments (CIs) in a context of tighter financial conditions and greater volatility in financial markets continues to reflect the soundness and stability of the Colombian financial system. In spite of exhibiting a recent decline, CIs are keeping liquidity and capital adequacy indicators well above the regulatory minimums. Its aggregate profitability, in turn, returned to the levels seen before the pandemic shock and showed a positive performance in financial intermediation activities. With respect to non-bank financial institutions, the recent volatility of the financial markets has led to reductions in their level of assets due to the devaluations in their investment portfolios. This has been reflected mainly in reduced profitability for Trust Companies (TC) and Pension Fund Managers (PFM). In line with the positive performance of economic activity in 2021 and so far in 2022, the rapid surge in household loans in Colombia, especially consumer loans together with the high levels of household debt to disposable income ratio is still considered a source of vulnerability for the stability of the Colombian financial system just as it was in the previous edition of this Report (see section 2.2.2). In addition, given the large current account deficit and the foreign financing needs, the exposure of the Colombian economy and financial institutions to changes in financial conditions persists in a global environment of high uncertainty. In any case, the results presented in this Report indicate that the financial system has shown to be resilient to the materialization of adverse scenarios (see Chapter 3). In compliance with its constitutional objectives and in coordination with the financial system’s security network, Banco de la República will continue to closely monitor the financial stability outlook at this juncture and will make the necessary decisions to ensure the proper functioning of the economy, facilitate the sufficient flow of credit and liquidity resources, and promote the smooth functioning of the payment system. Box 1: Insurance Industry Performance During the Covid-19 Pandemic - Financial Stability Report, Second Half of 2022. Gualtero-Briceño, Daniela and Pirateque-Niño, Javier Eliecer Box 2: Recent Trends in the Financial Position of Households - Financial Stability Report, Second Half of 2022. Gómez-Molina, Andrés Camilo; Mariño-Martínez, Juan Sebastián and Osorio-Rodríguez, Daniel Box 3: A Description of the Foreign Exchange Risk of Real Sector Firms in Colombia in 2021 - Financial Stability Report, Second Half of 2022. Carmona-Duarte, Alvaro; Martinez-Osorio, Adrian and Niño-Cuervo, Jorge Jorge Niño