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Littérature scientifique sur le sujet « The second stage of labor simulation »

Auteur : Grafiati

Publié le 14 décembre 2024

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Articles de revues sur le sujet "The second stage of labor simulation"

Chronis, Konstantinos, Alexandros Xanthopoulos et Dimitrios E. Koulouriotis. « Simulation Modeling and Analysis of a Door Industry ». International Journal of Operations Research and Information Systems 12, n^o 1 (janvier 2021) : 43–57. http://dx.doi.org/10.4018/ijoris.2021010104.

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Ιn this paper, the authors study the production line of a door industry. The first stage of this research consists of the detailed documentation with flow charts and systematization of all production processes, all product types, as well as all stages of production and equipment. The standard production times were calculated for each workstation, together with the relevant workforce requirements. In the second stage of this research, a discrete event simulation model of the factory was developed to assist in the production planning decision-making. The simulation model was verified using actual production data relating to 19 customer orders for a total of 1,281 doors. Four simulation experiments were executed, where the effect of alternative shifts on the manufacturing line's efficiency was investigated. The performance metrics of total production, mean daily production, and mean labor cost per product were considered. This experimental trial resulted in the identification of the shift configuration that achieves increased productivity while maintaining relatively low labor costs.

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Viktorov, V. V., R. F. Magafurov, R. R. Gafurova et L. R. Kudayarova. « Assessment of the Development of Skills in the Provision of Emergency Medical Care by Students of the Pediatric Faculty at the Stages of Preparation for the Primary Accreditation of a Specialist ». Virtual Technologies in Medicine 1, n^o 3 (17 septembre 2021) : 139–40. http://dx.doi.org/10.46594/2687-0037_2021_3_1337.

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An analysis of the data of 100 assessment checklists of the University students at the stages of preparation for primary accreditation in the specialty "Pediatrics" — the station "Emergency Medical Aid", which was carried out in practical classes within the discipline "Cycle of simulation training", is presented. The data on mistakes made by the students when working at the station are given, which must be paid attention to in order to successfully pass the second stage of accreditation and master professional competencies that correspond to the labor functions of a district pediatrician.

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Xuan, Rongrong, Mingshuwen Yang, Yajie Gao, Shuaijun Ren, Jialin Li, Zhenglun Yang, Yang Song et al. « A Simulation Analysis of Maternal Pelvic Floor Muscle ». International Journal of Environmental Research and Public Health 18, n^o 20 (15 octobre 2021) : 10821. http://dx.doi.org/10.3390/ijerph182010821.

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Pelvic floor disorder (PFD) is a common disease affecting the quality of life of middle-aged and elderly women. Pelvic floor muscle (PFM) damage is related to delivery mode, fetal size, and parity. Spontaneous vaginal delivery causes especially great damage to PFM. The purpose of this study was to summarize the characteristics of PFM action during the second stage of labor by collecting female pelvic MRI (magnetic resonance imaging) data and, further, to try to investigate the potential pathogenetic mechanism of PFD. A three-dimensional model was established to study the influence factors and characteristics of PFM strength. In the second stage of labor, the mechanical responses, possible damage, and the key parts of postpartum lesions of PFM due to the different fetal biparietal diameter (BPD) sizes were analyzed by finite element simulations. The research results showed that the peak stress and strain of PFM appeared at one-half of the delivery period and at the attachment point of the pubococcygeus to the skeleton. In addition, during the simulation process, the pubococcygeus was stretched by about 1.2 times and the levator ani muscle was stretched by more than two-fold. There was also greater stress and strain in the middle area of the levator ani muscle and pubococcygeus. According to the statistics, either being too young or in old maternal age will increase the probability of postpartum PFM injury. During delivery, the entire PFM underwent the huge deformation, in which the levator ani muscle and the pubococcygeus were seriously stretched and the attachment point between the pubococcygeus and the skeleton were the places with the highest probability of postpartum lesions.

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Kaganova, M. A., N. V. Spiridonova, I. A. Bordovskiy et V. Yu Soloviev. « Complications in the Second Stage of Labor With Breech Presentation, Working Out the Algorithm of Actions Within the Framework of Simulation Training ». Virtual Technologies in Medicine 1, n^o 3 (17 septembre 2021) : 118–19. http://dx.doi.org/10.46594/2687-0037_2021_2_1314.

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Chen, Jia, Yujuan Yuan et Yadong Wang. « Manipulative Reduction for Abnormal Uterine Inclination in Vaginal Delivery ». Computational and Mathematical Methods in Medicine 2022 (30 janvier 2022) : 1–5. http://dx.doi.org/10.1155/2022/4765447.

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Objective. To investigate the manipulative reduction in abnormal uterine inclination in vaginal delivery. Methods. With the independently developed uterine inclination surveyor, 40 primiparas with abnormal uterine inclination were randomly divided into two groups: treatment group (Group A, 20 cases) and control group (Group B, 20 cases). The general condition of the primipara, the labor stages, the changes in uterine inclination after treatment, postpartum hemorrhage at 2 hours, and the general condition of fetuses were observed to study the therapeutic value of manual reduction in abnormal uterine inclination. Result. In the control group, one uterine inclination was not corrected with the change in labor process, and the pregnancy was terminated due to stagnation of the active phase. In the first stage of labor, the time spent in the treatment group ( 393.4 ± 31.3 mins) was significantly lower than that in the control group ( 440.7 ± 34.9 mins) ( P = 0.001 ). Compared with the control group ( 49.8 ± 6.5 mins), the treatment group ( 42.6 ± 7.2 mins) also exhibited a significantly shortened second stage of labor ( P = 0.02 ). Sixteen cases (16/20) in the treatment group returned to normal after manual reduction, and 9 cases (9/20) in the control group returned to normal with the progression of natural labor. Manual reduction could be used as an option to treat abnormal uterine inclination ( P = 0.01 ). There was no significant difference in the third stage of labor ( P = 0.2 ), 2-hour postpartum hemorrhage ( P = 0.35 ), Apgar score ( P = 0.64 ), or body weight ( P = 0.76 ) between the two groups. Conclusion. Manual reduction in the treatment of abnormal uterine inclination has obvious effects, shortens the birth process, and is safe for the fetus.

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Lien, K. C., J. A. Ashton-Miller et J. O. L. Delancey. « Poster 9 : Effect of Voluntary Push Timing on the Duration of the Second Stage of Labor : Results from a Computer Simulation ». Journal of Pelvic Medicine and Surgery 11, Supplement 1 (2005) : S29—S30. http://dx.doi.org/10.1097/01.spv.0000178865.41836.b9.

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Abdul Fatah, Ireana Yusra, Nor Izzah Hazirah Abdul Hadi et Razwan Rohimi. « Design Modification and Structure Simulation Analysis of Tapioca Peeling Machine ». Malaysian Journal of Applied Sciences 7, n^o 2 (31 octobre 2022) : 83–92. http://dx.doi.org/10.37231/myjas.2022.7.2.339.

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This project works on the design of a tapioca peeling machine for peeling freshly harvested tapioca tubers with the capacity of peeling tubers of different weight and diameter sizes. The need to mitigate the low output, drudgery, high labor costs and losses associated with manual peeling called for the design of the machine to improve the agricultural yield of the crop. The objectives of the research were to study the existing tapioca peeling technologies, to select and size the machine components, to develop the layout of the machine and to carry out the cost analysis of the tapioca peeling machine. To solve the problem, the innovation was formulated to peel tapioca skin with two stage of peeling (the first layer and the second layer) to increase productivity. From simulation of eco-auto-tap , the design of machine can work succesfully, and be a great improvement in the tapioca machine

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Ballit, Abbass, Morgane Ferrandini et Tien-Tuan Dao. « Novel hybrid rigid-deformable fetal modeling for simulating the vaginal delivery within the second stage of labor ». Computer Methods and Programs in Biomedicine 250 (juin 2024) : 108168. http://dx.doi.org/10.1016/j.cmpb.2024.108168.

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Dykas, Paweł, et Tomasz Misiak. « The Neoclassical Growth Model with Sinusoidal Investments ». Przegląd Statystyczny 63, n^o 1 (31 mars 2016) : 49–66. http://dx.doi.org/10.5604/01.3001.0014.1148.

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The aim of the present study is an attempt to extend the neoclassical model of economic growth of Solow by repealing the assumption of fixed investment and introducing an investment function dependent sinusoidally on the time. The adoption of the sinusoidal function of investment is substantiated by the fact that investments (like manufacturing) are largely depended on the economic situation, which is subject to periodic fluctuations. The authors introduce the theoretical considerations on the notion of cyclical and smooth path of temporal capital-labour ratio and labour productivity. When using these tools the authors identified, by calculating the relative deviations of the mentioned path, the impact of investment function dependent sinusoidally on the time.In the empirical analysis the authors conducted the calibration of parameters used by the research model. Based on panel data for the EU15 between the years 2000–2013 the α parameter (production flexibility in relation to capital) was estimated first at 0,349. That value was adopted to further numerical analysis. In the second stage the simulations of numerical, calibrated deviations of temporal cyclical path of capital-labour ratio (labor productivity) from the smooth path of capital-labour ratio (labor productivity) was performed. When conducting numerical analysis the impact of different investment rates (15%, 20%, 25%) and periods of cyclical fluctuations (4 or 10 years) have been considered in relation to the formation of these deviations. Numerical analysis for the economies of the EU15 group was made for one hundred time series.

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Barros, J. G., A. G. Costa, M. Carvalho Afonso, N. Clode et L. M. Graça. « OP15.07 : The effect of simulation training in clinical determination of fetal head position during the second stage of labour ». Ultrasound in Obstetrics & ; Gynecology 48, S1 (septembre 2016) : 99. http://dx.doi.org/10.1002/uog.16300.

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Thèses sur le sujet "The second stage of labor simulation"

Nguyen, Trieu Nhat Thanh. « Modélisation et simulation d'éléments finis du système pelvien humain vers un outil d'aide à la décision fiable : incertitude des données et des lois de comportement ». Electronic Thesis or Diss., Centrale Lille Institut, 2024. http://www.theses.fr/2024CLIL0015.

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Cette thèse a développé une approche originale pour quantifier les incertitudes liées aux propriétés hyperélastiques des tissus mous, en utilisant à la fois des probabilités précises et imprécises. Le protocole de calcul a été étendu pour quantifier les incertitudes dans les contractions utérines actives lors des simulations du deuxième stade du travail. De plus, une simulation de la descente foetale a été créée, intégrant des données de contraction utérine active basées sur l'IRM et une quantification d'incertitude associée. L'étude a révélé que l'Expansion du Chaos Polynomial (PCE) non intrusif est plus efficace que les simulations directes de Monte Carlo.Ce travail met en évidence l'importance de quantifier et de propager les incertitudes dans les propriétés hyperélastiques des tissus utérins lors des simulations de travail, améliorant ainsi la fiabilité des résultats de simulation. Pour la première fois, il aborde la quantification des incertitudes des contractions utérines actives pendant le travail, assurant des résultats de simulation fiables et valides. La simulation de la descente foetale, cohérente avec les données théoriques et IRM, valide la précision des modèles en reflétant les processus physiologiques, soulignant la nécessité d'inclure les contractions utérines actives pour des résultats plus réalistes. L'étude souligne également l'importance d'évaluer la sensibilité globale des paramètres, l'incertitude et les résultats de simulation pour des applications cliniques fiables. En conclusion, cette recherche fait progresser de manière significative les simulations de l'accouchement en fournissant un cadre robuste pour la quantification des incertitudes, améliorant ainsi la fiabilité des résultats de simulation et soutenant une meilleure prise de décision clinique.Les travaux futurs étendront le processus à un modèle complet du système pelvien, incluant l'os du bassin, les ligaments et d'autres organes (comme la vessie, le rectum) pour simuler l'ensemble du processus de délivrance. Des comportements plus complexes des tissus mous pelviens seront étudiés pour mieux décrire l'interaction foetale pendant le travail. L'utilisation de données IRM 3D, si disponibles, permettra une meilleure évaluation, notamment pour la rotation foetale lors de l'expulsion. Un modèle complet du bassin maternel sera couplé à l'apprentissage par renforcement pour identifier les mécanismes de délivrance. De plus, une combinaison plus complexe d'orientations de fibres sera envisagée. Pour améliorer la méthode de Monte Carlo, des techniques de réduction de la variance et des stratégies d'optimisation telles que l'échantillonnage par importance, l'échantillonnage hypercube latin et les méthodes de Monte Carlo par chaînes de Markov seront utilisées pour réduire la taille des échantillons tout en maintenant la précision. Des méthodes pour une convergence plus rapide et une précision accrue dans la quantification des incertitudes, comme discuté par Hauseux et al. (2017), seront explorées. D'autres formulations de la méthode des éléments finis stochastiques (SFEM), comme la méthode SFEM spectrale stochastique (SSFEM), seront considérées pour la quantification des incertitudes, et des méthodes intrusives comme le stochastique-Galerkin seront utilisées pour leurs avantages computationnels. Ces approches pourraient améliorer la quantification des incertitudes dans les études futures.Enfin, l'approche développée pourrait être adaptée à la modélisation spécifique au patient et aux simulations de complications de la délivrance, permettant d'identifier les risques et les solutions thérapeutiques potentielles pour des interventions médicales personnalisées et des résultats améliorés pour les patients
Approximately 0.5 million deaths during childbirth occur annually, as reported by the World Health Organization (WHO). One prominent cause is complicated obstructed labor, also known as labor dystocia. This condition arises when the baby fails to navigate the birth canal despite normal uterine contractions. Therefore, understanding this complex physiological process is essential for improving diagnosis, optimizing clinical interventions, and defining predictive and preventive strategies. Currently, due to the complexity of experimental protocols and associated ethical issues, computational modeling and simulation of childbirth have emerged as the most promising solutions to achieve these objectives. However, it is crucial to quantify the significant influence of inherent uncertainties in the parameters and behaviors of the human pelvic system and their propagation through simulations to establish reliable indicators for clinical decision-making. Specifically, epistemic uncertainties due to lack of knowledge and aleatoric uncertainties due to intrinsic variability in physical domain geometries, material properties, and loads are often not fully understood and are frequently overlooked in current literature on childbirth computational modeling and simulation.This PhD thesis addresses three original contributions aimed at overcoming these challenges: 1) development and evaluation of a computational workflow for the uncertainty quantification of hyperelastic properties of the soft tissue using precise and imprecise probabilities; 2) extrapolation of the developed protocol for the uncertainty quantification of the active uterine contraction during the second stage of labor simulation; and 3) development and evaluation of a fetus descent simulation with the active uterine contraction using MRI-based observations and associated uncertainty quantification process.This thesis pays the way to a more reliable childbirth modeling and simulation under passive and active uterine contractions. In fact, the developed computational protocols could be extrapolated into a patient-specific modeling and simulation to identify the risk factors and associated strategies for vaginal delivery complications in a straightforward manner. Finally, the investigation of stochastic finite element formulation will allow to improve the computational cost for the uncertainty quantification process

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Kerr, Kathleen. « The relationship between position for primigravida women and length of second stage labor / ». Staten Island, N.Y. : [s.n.], 1993. http://library.wagner.edu/theses/nursing/1993/thesis_nur_1993_kerr_relat.pdf.

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King, Tonya Rochelle. « Evidence-Based Recommendations for Nursing Care During the Second Stage of Labor : A Best Practice Approach ». Thesis, The University of Arizona, 2015. http://hdl.handle.net/10150/595058.

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The purpose of this thesis was to develop best practice recommendations to care for women in the second stage of labor. Evidence suggests that care of women during the second stage of labor using upright positioning, delayed pushing, application of warm compresses to the perineum, and perineal massage can improve maternal and neonatal outcomes (Aasheim et al., 2011; Brancato et al., 2008; Chang et al., 2011; Dahlen et al., 2007; Dahlen et al., 2009; Gillesby et al., 2010; Gupta et al., 2012; Kelly et al., 2010; Sanders et al., 2005; Schaub et al., 2008; Simpson & James, 2005; Terry et al., 2006; Thies-Lagergren et al., 2013). A theoretical plan for implementation and evaluation of best practice recommendations for the second stage of labor was discussed in this paper. Registered nurses implementing evidence-based recommendations within the hospital setting for pregnant women regarding delayed pushing, upright labor positions, and interventions to reduce perineal trauma and pain, would provide women care that may improve second stage of labor outcomes.

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Youssef, Aly Mohamed Alaaeldin Kamaleldin Aly <1978&gt. « Ultrasound Prediction of the Mode of Delivery in the Second Stage of Labor Using the Fetal Head-Symphysis Distance ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amsdottorato.unibo.it/7977/1/2017.03.24%20TESI%20PHD%20%2B%20Aly%20%2B%20Frontespizio.pdf.

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OBJECTIVE: To evaluate whether the fetal head-symphysis distance measured by three-dimensional transperineal ultrasound during the active second stage predicts operative delivery. DESIGN: Prospective observational study. SETTING: University hospital, Bologna, Italy. POPULATION: Seventy-one nulliparous women at term in active second stage of labor. METHODS: We acquired a series of sonographic volumes at the beginning of the active second stage (T1) and every 20 min thereafter (T2, T3, T4, T5, T6) until delivery. All volumes were retrospectively analyzed and head-symphysis distance was measured for each acquisition. We compared head-symphysis distance between women with spontaneous vaginal delivery and those with operative delivery. Receiver operator characteristic curves were constructed to estimate the accuracy of head-symphysis distance in the prediction of operative delivery. Logistic regression was used to identify independent variables associated with operative delivery. MAIN OUTCOME MEASURES: Operative delivery (vacuum or cesarean). RESULTS: Of the women included, 81.7% had a spontaneous vaginal delivery and 18.3% underwent operative delivery. Women with spontaneous vaginal delivery had shorter head-symphysis distance than women in the operative delivery group at T1 (p < 0.001), T2 (p < 0.001) and T3 (p = 0.025), whereas no significant differences were recorded thereafter. Receiver operator characteristic curves revealed accuracy values of 81.0%, 87.9% and 77.6% in the prediction of operative delivery at T1, T2 and T3, respectively. At multivariate logistic regression head-symphysis distance and epidural analgesia were the only independent predictors of operative delivery among ultrasonographic, maternal and intrapartum variables. CONCLUSIONS: Ultrasonographic measurement of head-symphysis distance in the second stage of labor can be used to predict operative delivery.

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Sousa, Carina Gomes de. « Medidas protetoras de traumatismos e disfunção do pavimento pélvico no 2º estadio do trabalho de parto ». Master's thesis, Universidade de Évora, 2017. http://hdl.handle.net/10174/22807.

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O risco de traumatismos no parto vaginal pode incorrer em disfunções do pavimento pélvico, com impacto negativo na qualidade de vida da mulher. Este relatório centra-se num projeto de melhoria da qualidade de cuidados, desenvolvido no Centro Hospitalar Barreiro-Montijo, com o objetivo de promover a implementação de medidas protetoras de traumatismo se disfunção do pavimento pélvico, em mulheres de baixo risco obstétrico, no 2ºestadio do trabalho de parto. Consideraram-se medidas protetoras: posições verticalizadas, esforços expulsivos espontâneos, técnicas suporte perineal (“hands-off” e “hands-on),episiotomia seletiva, não realização da manobra de Kristeller e aplicação de calor. As intervenções foram avaliadas na equipa de enfermagem e num grupo de parturientes, através da aplicação de questionários. As necessidades identificadas determinaram as atividades desenvolvidas. Constatou-se uma adesão crescente na implementação das medidas referidas, refletindo-se em ganhos na preservação da integridade perineal. A implementação destas medidas constitui-se uma área de intervenção da autonomia e responsabilidade do Enfermeiro Obstetra, devendo ser um cuidado na sua prática. Abstract: The risk of trauma to vaginal delivery may lead to pelvic floor dysfunction, with a negative impact on the quality of life of the woman. This report focuses on a project to improve the quality of care, developed at Centro Hospitalar Barreiro-Montijo, with the objective of promoting the implementation of protective measures for trauma and pelvic floor dysfunction in low-risk obstetric women in the 2nd labor. Protective measures were considered: vertical positions, spon-taneous expulsive efforts, techniques perineal (hands-off and hands-on), selective epi-siotomy, non-performance of the Kristeller maneuver and heat application. The interventions were evaluated in the nursing team and in a group of parturients, through the application of questionnaires. The identified needs determined the activities developed. Increased adherence was observed in the implementation of these measures, reflected in gains in the preservation of perineal integrity. The implementation of these measures constitutes an intervention area of the auto-nomy and responsibility of the Midwife, and should be a care in its practice.

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Rocha, Bruna Dedavid da. « POSIÇÕES VERTICALIZADAS NO PARTO E A PREVENÇÃO DE LACERAÇÕES PERINEAIS : METANÁLISE ». Centro Universitário Franciscano, 2017. http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/635.

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The model of obstetric and neonatal care at the national level, is experiencing important changes regarding the qualification and humanization of care. The importance of the insertion of obstetrical nurses in this scenario and the carrying out of research based on scientific evidence are highlighted. The objective was to perform a systematic review with meta-analysis to investigate whether the adoption of vertical positions by the woman, in childbirth, compared to the lithotomic position, prevents perineal lacerations. The first manuscript was an integrative review of literature, by searching the bases PubMed and Lilacs, on methods for prevention of perineal lacerations. The final sample consisted of 16 articles and emerged three thematic categories: factors related to the practice of episiotomy and the occurrence of perineal lacerations and indications for the performance, approach of the professional that provides assistance to normal delivery and strategies for prevention of perineal lacerations.The second manuscript concerns a systematic review. For this study, the Lilacs, Pubmed, Cinahl, Cochrane Library, Web of Science, Science Direct, Scopus, Google Schoolar and Open Gray databases were delineated as the main descriptors in english and portuguese: posture, second stage labor, posição and segunda fase de trabalho de parto. Moreover, only primary studies were carried out, which included parturients in active labor, who adopted vertical positions or lithotomic position at the time of delivery, and the prevention or not of perineal lacerations when adopting these positions. No temporal or language cut of studies was delimited. The relevance tests I and II were performed by two independent reviewers. The quality of the evidence was evaluated, according to the GRADE System, and meta-analysis of the results. Scientific evidence has emerged that it is not possible to say with certainty that vertical positions prevent perineal lacerations, compared to the lithotomic position. The product resulting from the research process is a systematic review with meta-analysis, which, based on evidence-based practice, is the best evidence available for clinical decision-making.
O modelo de assistência obstétrica e neonatal em âmbito nacional, está vivenciando mudanças importantes, referentes a qualificação e humanização da assistência. Destaca-se a importância da inserção de enfermeiras obstétricas nesse cenário e a realização de pesquisas baseadas em evidências científicas. Objetivou-se realizar uma revisão sistemática com metanálise, para investigar se a adoção de posições verticalizadas pela mulher, no parto, comparada à posição litotômica, previne lacerações perineais. Emergiram dois artigos da dissertação. O primeiro manuscrito realizado foi uma revisão integrativa de literatura, elaborada a partir do projeto de pesquisa. Foi realizada busca nas bases Pubmed e Lilacs, sobre métodos para prevenção de lacerações perineais. A amostra final foi composta de 16 artigos e emergiram três categorias temáticas quais sejam: fatores relacionados à prática da episiotomia e ocorrência de lacerações perineais e indicações para a realização; abordagem do profissional que presta assistência ao parto normal e estratégias para prevenção de lacerações perineais. O segundo manuscrito diz respeito a uma revisão sistemática. Para esse estudo foram elencadas as bases de dados Lilacs, Pubmed, Cinahl, Cochrane Library, Web of Science, Science Direct, Scopus, Google Schoolar e Open Gray e delimitados como principais descritores em inglês e português: posture, second stage labor, posição e segunda fase de trabalho de parto. Ainda, selecionou-se apenas estudos primários, que contemplassem parturientes em trabalho de parto ativo, que adotaram posições verticalizadas ou posição litotômica, no momento do parto, e a prevenção ou não de lacerações perineais ao adotarem essas posições. Não foi delimitado recorte temporal ou idioma dos estudos. Os testes de relevância I e II foram realizados por dois revisores independentes. Foi avaliada a qualidade da evidência científica dos estudos, de acordo com o Sistema GRADE, e realizada metanálise dos resultados. Emergiu a evidência científica de que não é possível afirmar com certeza, que as posições verticalizadas previnem lacerações perineais, quando comparadas à posições horizontais. O produto resultante do processo da pesquisa configura-se como revisão sistemática com metanálise, a qual, mediante a prática baseada em evidências, se fundamenta como a melhor evidência disponível para a tomada de decisão clínica.

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Oliveira, Irene P. « Roles and behavior of the support person in second stage labor a report submitted in partial fulfillment ... for the degree of Master of Science (Parent-Child Nursing) ... / ». 1996. http://catalog.hathitrust.org/api/volumes/oclc/68799487.html.

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Chang, Su-Chuan, et 張素娟. « The effect of upright position pushing method in second stage of labor ». Thesis, 2005. http://ndltd.ncl.edu.tw/handle/34900271850731023569.

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碩士
國立台北護理學院
護理助產研究所
93
The purpose of this study is to assess the advantage of upright position pushing during second stage of labor. We studies 66 lower risk vertex presentation primigravida women during 37 - 42 weeks of gestation age, who had urge sensation in pusing baby out of their womb during second stage of labor. The second stage duration of labor, birth fatigure, labor pushing experience, perineal laceration after episiotomy, newborn Apgar Score of women who received either upright position ( 33 women ) or smi-flowers position ( 33 women)were analysed with independent t-test, χ2 , Mann - Whitney U test. The result revealed upright position could be effective in shorted 54 minutes the duration of second stage of labor ( p < .05 ), decrease birth fatigue ( p < .05 ), and pushing experi ence ( p < .05 ), labor pain ( p < .01 ), decrease perineal laceration after episiotomy ( p < .05 ) in second stage of labor improved with upright pushing position. This upright position program could be promoted and be used by other hospitals in order to gain the satisfaction by women in laboring.

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CHIU, MU-JUNG, et 邱慕蓉. « Application of Perineal Warm Packs on Perineal Outcomes and Labor Pain in the Second Stage of Labor ». Thesis, 2017. http://ndltd.ncl.edu.tw/handle/28016265724610594198.

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碩士
國立臺北護理健康大學
助產及婦女健康照護系護理助產研究所
105
Background Reducing pain during labor and delivery is an important issue in maternity care. Studies have indicated that applying a hot compress to the perineum during the second stage of labor may effectively reduce postpartum perineal pain, perineal laceration severity, and urinary incontinence and thus improve the birth satisfaction of new mothers. Purpose The present study explores the effect of applying a hot compress to the perineum during the second stage of labor on perineal laceration severity, postpartum perineal pain, and patient-perceived comfort and birth satisfaction. Methods This quasi-experimental study used continuous convenience sampling to recruit qualified cases from a regional research hospital in northern Taiwan between May 2016 and February 2017. Forty-seven cases were assigned based on stated preference to the intervention group and to the control group, respectively, with 94 cases in total. The intervention group completed the pretest at the start of the second stage of labor, with the researcher or a maternity nurse first assessing patient perineal pain and physical comfort and then administering the initial hot compress application to the perineal region. The control group received standard maternity care only. Changes in perineal pain and physical comfort were then assessed and recorded at the following intervals: immediately after, 30-minutes after, and 60-minutes after the application and at 24-hours postpartum. Perineal laceration severity and birth satisfaction were also assessed and recorded at 24-hours postpartum. A structured questionnaire that included a demographic and obstetrics datasheet, visual analogue scales for pain and comfort, a childbirth satisfaction scale, and a perineal wound assessment scale was used to gather data. Data were managed and analyzed on SPSS 20.0 using inferential statistics, including descriptive statistics, the independent samples t test, the chi-square test, and the GEE. Results A total of 94 participants completed the present study. The control group had fewer cases of surgical suturing (t=3.51, p<.05), a shorter average suture time (t=4.25, p<.01), a lower average REEDA scale score (t=6.31, p<.01), and lower average perineal laceration severity (t=3.32, p<.05). Significant differences between the two groups were observed in terms of level of perineal pain at pretest (full dilation; t=2.02, p<.05), immediately after the time of hot compress application (t=4.17, p<.01), 30 minutes after the time of hot compress application (t=10.08, p<.01), 60 minutes after the time of hot compress application (t=16.86, p<.01), and at 24-hours postpartum (t=5.42, p<.01). No difference was observed between the two groups in terms of perceived perineal comfort at pretest (t=-0.75, p=.46). However, significant intergroup differences for this variable were recorded at all post-application observation time points (immediately after [t=-6.31, p<.01], 30-mins after [t=-16.96, p<.01], 60-mins after [t=-27.34, p<.01], and 24-hrs after [t=-6.56, p<.01]. Finally, the experimential group had a higher average birth satisfaction scores (t=-4.46, p<.05). The findings discerned the interaction effects of both group and time. Not only did the intervention group earn lower perineal pain scores than the control group, this intergroup difference increased over time as pain scores for the former gradually decreased and those for the latter gradually increased. Additionally, the posttest intergroup difference in perineal comfort also increased over time, with scores reaching their highest at 60-minutes posttest for the intervention group and decreasing steadily over time for the control group. Conclusions and Clinical Applications Demographic and obstetrics variables, including age, education level, duration of second-stage labor, total pushing time, weeks of pregnancy, and infant head circumference, had no significant effect on either perineal pain or comfort. Degree of perineal laceration was found to have the most significant effect on perineal pain, with higher degrees of laceration associated with greater perineal pain and reduced perineal comfort. Results support that applying the perineal hot compress intervention during the second stage of labor significantly reduces perineal laceration severity and perineal pain while improving perineal comfort. Furthermore, the intervention group required fewer perineal stitches and thus less stitching time. The perineal hot compress is a low-cost, noninvasive intervention that may be performed by staffs without special training. The authors hope that the present article provides maternity-ward personnel with the basic skills necessary to perform this intervention in clinical settings in order to reduce the perineal laceration severity and perineal pain and to improve the perineal comfort and birth satisfaction of new mothers. Moreover, the authors hope to help focus greater medical community attention on this non-pharmacological method of pain control as a way to further enhance patient autonomy, promote positive perspectives on the birth process, and achieve optimal birth outcomes.

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Dimon, Celeste E. « Pushing techniques the impact of non-directed versus directed pushing on maternal and fetal outcomes : a research report submitted in partial fullfillment [sic] for the degree of Masters [sic] of Science (Nurse-Midwifery) ... / ». 1995. http://catalog.hathitrust.org/api/volumes/oclc/68798756.html.

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Livres sur le sujet "The second stage of labor simulation"

Sheila, Kitzinger, et Simkin Penny 1938-, dir. Episiotomy and the second stage of labor. 2^e éd. Seattle, WA : Pennypress, 1986.

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Sheila, Kitzinger. Episiotomy and the second stage of labor. 2^e éd. Seattle : Pennypress, 1986.

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Linda, Mayberry, et Association of Women's Health, Obstetric, and Neonatal Nurses., dir. Second stage labor management : Promotion of evidence-based practice and a collaborative approach to patient care. Washington, D.C. (2000 L Street, NW, Suite 740, Washington 20036) : Association of Women's Health, Obstetric and Neonatal Nurses, 2000.

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Hausner, Xenia. Xenia Hausner : Damenwahl : Berichte aus dem Labor = Ladies first : second thoughts. Köln : Wienand, 2003.

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Gene, Mailes, dir. Hollywood's other blacklist : Union struggles in the studio system. London : British Film Institute, 1995.

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Mazo, Aleksandr, et Konstantin Potashev. The superelements. Modeling of oil fields development. ru : INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1043236.

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This monograph presents the basics of super-element modeling method of two-phase fluid flows occurring during the development of oil reservoir. The simulation is performed in two stages to reduce the spatial and temporal scales of the studied processes. In the first stage of modeling of development of oil deposits built long-term (for decades) the model of the global dynamics of the flooding on the super-element computational grid with a step equal to the average distance between wells (200-500 m). Local filtration flow, caused by the action of geological and technical methods of stimulation, are modeled in the second stage using a special mathematical models using computational grids with high resolution detail for the space of from 0.1 to 10 m and time — from 102 to 105 C. The results of application of the presented models to the solution of practical tasks of development of oil reservoir. Special attention is paid to the issue of value transfer in filtration-capacitive properties of the reservoir, with a detailed grid of the geological model on the larger grid reservoir models. Designed for professionals in the field of mathematical and numerical modeling of fluid flows occurring during the development of oil fields and using traditional commercial software packages, as well as developing their own software. May be of interest to undergraduate and graduate students studying in areas such as "Mechanics and mathematical modeling", "Applied mathematics", "Oil and gas".

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GPST Stage 3 : Written and Simulation Exercises : Second Edition. JP Medical Ltd, 2016.

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Lier, Donna Jean Van. EFFECT OF MATERNAL POSITION ON THE SECOND STAGE OF LABOR. 1985.

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Awhonn et Association of Women's Health, Obstetric, and Neonatal Nurses. Nursing Management of the Second Stage of Labor, Pkg : Evidence-Based Clinical Practice Guideline. Not Avail, 2000.

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Hanson, Lisa Christine. FACTORS AFFECTING THE USE OF MATERNAL POSITIONS FOR THE SECOND STAGE OF LABOR : A SURVEY OF CERTIFIED NURSE-MIDWIVES. 1996.

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Chapitres de livres sur le sujet "The second stage of labor simulation"

Gimovsky, Alexis C. « Second Stage Of Labor ». Dans Obstetric Evidence Based Guidelines, 105–12. 4^e éd. Boca Raton : CRC Press, 2022. http://dx.doi.org/10.1201/9781003102342-9.

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Gimovsky, Alexis. « 8. Second stage of labor ». Dans Obstetric Evidence Based Guidelines, 97–102. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742 : CRC Press, 2016. http://dx.doi.org/10.1201/9781315200903-9.

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Camorcia, Michela. « The Second and Third Stage of Labor ». Dans Epidural Labor Analgesia, 103–19. Cham : Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13890-9_9.

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Lal, Pavika, Igor V. Lakhno et Garima Gupta. « Second Stage of Labor : Current Trends in Management ». Dans Labour and Delivery, 179–88. Singapore : Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6145-8_12.

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Levy, Roni, et Sharon Perlman. « The Second Stage of Labor : Comparison Between Traditional and Sonographic Parameters ». Dans Intrapartum Ultrasonography for Labor Management, 385–95. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-57595-3_33.

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Dückelmann, Anna M., et Karim D. Kalache. « Intrapartal Ultrasound to Assess Fetal Head Position and Station in the Second Stage of Labor : State of the Art ». Dans Intrapartum Ultrasonography for Labor Management, 417–44. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-57595-3_36.

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Youssef, Aly, Elena Brunelli, Luca Bianchini et Gianluigi Pilu. « Fundal Pressure During the Second Stage of Labor (Kristeller Maneuver) : A Critical Appraisal of Its Potential Role in the Modern Obstetrics ». Dans Intrapartum Ultrasonography for Labor Management, 695–701. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-57595-3_54.

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Bhukya, Muralidhar Nayak, Manish Kumar et Shobha Rani Depuru. « A Simple Approach to Enhance the Performance of Traditional P&O Scheme Under Partial Shaded Condition by Employing Second Stage to the Existing Algorithm ». Dans Modeling, Simulation and Optimization, 545–56. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9829-6_43.

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Carbonne, B., F. Audibert, D. Cabrol et E. Papiernik. « Relationship between changes in fetal oxygen saturation during second stage of labor and neonatal outcome in cases of abnormal fetal heart rate ». Dans Hypoxische Gefährdung des Fetus sub partu, 203–9. Heidelberg : Steinkopff, 1994. http://dx.doi.org/10.1007/978-3-642-95982-0_28.

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Zolnikov, Konstantin P., Dmitrij S. Kryzhevich et Aleksandr V. Korchuganov. « Regularities of Structural Rearrangements in Single- and Bicrystals Near the Contact Zone ». Dans Springer Tracts in Mechanical Engineering, 301–22. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60124-9_14.

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AbstractThe chapter is devoted to the analysis of the features of local structural rearrangementsin nanostructured materialsunder shear loadingand nanoindentation. The study was carried out using molecular dynamics-based computer simulation. In particular, we investigated the features of symmetric tilt grain boundary migration in bcc and fcc metals under shear loading. The main emphasis was on identifying atomic mechanisms responsible for the migration of symmetric tilt grain boundaries. We revealed that grain boundaries of this type can move with abnormally high velocities up to several hundred meters per second. The grain boundary velocity depends on the shear rate and grain boundary structure. It is important to note that the migration of grain boundary does not lead to the formation of structural defects. We showed that grain boundary moves in a pronounced jump-like manner as a result of a certain sequence of self-consistent displacements of grain boundary atomic planes and adjacent planes. The number of atomic planes involved in the migration process depends on the structure of the grain boundary. In the case of bcc vanadium, five planes participate in the migration of the Σ5(210)[001] grain boundary, and three planes determine the Σ5(310)[001] grain boundary motion. The Σ5(310)[001] grain boundary in fcc nickel moves as a result of rearrangements of six atomic planes. The stacking order of atomic planes participating in the grain boundary migration can change. A jump-like manner of grain boundary motion may be divided into two stages. The first stage is a long time interval of stress increase during shear loading. The grain boundary is motionless during this period and accumulates elastic strain energy. This is followed by the stage of jump-like grain boundary motion, which results in rapid stress drop. The related study was focused on understanding the atomic rearrangements responsible for the nucleation of plasticity near different crystallographic surfaces of fcc and bcc metals under nanoindentation. We showed that a wedge-shaped region, which consists of atoms with a changed symmetry of the nearest environment, is formed under the indentation of the (001) surface of the copper crystallite. Stacking faults arise in the (111) atomic planes of the contact zone under the indentation of the (011) surface. Their escape on the side free surface leads to a step formation. Indentation of the (111) surface is accompanied by nucleation of partial dislocations in the contact zone subsequent formation of nanotwins. The results of the nanoindentation of bcc iron bicrystal show that the grain boundary prevents the propagation of structural defects nucleated in the contact zone into the neighboring grain.

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Actes de conférences sur le sujet "The second stage of labor simulation"

Bianchi, Dino, Paolo Noccioni et Catherine J. Silvestri. « The New PGT5B/2 : A State-of-the-Art 6MW Two-Shaft Gas Turbine ». Dans ASME Turbo Expo 2000 : Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/2000-gt-0561.

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The new PGT5B is a compact, state-of-the-art, 6 MW industrial gas turbine. The unit is available in two configurations: a single shaft for power generation and a two-shaft for mechanical drive applications. Maximum commonality has been maintained between the single and two shaft models. Both units share a common gas generator, with evident benefits in all the installations where mixed operations are required. The two-shaft engine is simply obtained by removing the second stage turbine from the single shaft unit and adding a two-stage power turbine. The unit is an evolution of the existing PGT5, building on the experience of the successful PGT10 model. The synergy between GE Aircraft Engines and GE Power System Nuovo Pignone, with the benefit of GE’s Six Sigma Total Quality Methodology, has permitted the application of the most advanced technology in the development of the major components of the engine. The high efficiency axial compressor is a scaled down version of the successful PGT10B, chosen as the base compressor for the new PGT’s product line. It has been obtained by the combination of advanced fully 3D aero-design, custom airfoil shape and blade stacking optimization. The annular DLE, dual fuel combustion system, developed according to the proven aircraft engines design, is able to satisfy the most stringent environmental regulations. The axial turbine, with sophisticated air cooling system, is designed to reach high values of firing temperature consistent with future uprates. The application of advanced CFD analysis using 3D viscous multi-rows codes and unsteady simulation has resulted in a very high efficiency turbine. The two stage uncooled power turbine capitalizes on Nuovo Pignone’s experience in the mechanical drive market. While the single shaft version is particularly suitable for power generation and cogeneration due to the high exhaust temperature, the two-shaft version, with wide operating speed range, is designed to be a reliable and efficient mechanical drive for compressors and pumps. The Power Turbine speed for optimum application efficiency (up to 34.%) is 12,500 rpm, with a capability range from 50% to 105% of nominal speed. The flexibility of the standard package satisfies the different installation requirements of oil and gas market. The simplicity of construction and the modular design concept of both the engine and package facilitate maintenance and reduce downtime and labor during servicing.

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Agostinelli, Angela, Flavio Palmieri, Alessandra Biagini, Agnese Sbrollini, Luca Burattini, Francesco Di Nardo, Sandro Fioretti et Laura Burattini. « Relationship between Deceleration Areas in the Second Stage of Labor and Neonatal Acidemia ». Dans 2016 Computing in Cardiology Conference. Computing in Cardiology, 2016. http://dx.doi.org/10.22489/cinc.2016.260-352.

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Rahayu, Esty Puji, et Lailatul Khusnul Rizki. « Effect of Affirmation Flashcards on Level of Anxiety in Second Stage of Labor at Midwifery Clinic, East Java ». Dans The 7th International Conference on Public Health 2020. Masters Program in Public Health, Universitas Sebelas Maret, 2020. http://dx.doi.org/10.26911/the7thicph.03.49.

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ABSTRACT Background: The Indonesia Demographic and Health Survey (IDHS) 2017 reported a high maternal mortality rate (MMR) in Indonesia. Safe and effective management of the second stage of labor presents a clinical challenge for laboring women and practitioners of obstetric care. This study aimed to examine effect of affirmation flashcards on level of anxiety in second stage of labor at midwifery clinic, East Java. Subjects and Method: This was a quasi-experiment with pre and post-test design was conducted at Mei Kurniawati, Amd.Keb midwifery clinic, Surabaya from July to September 2020. A sample of 30 pregnant women who planned to give birth normally at Mei Kurniawati, Amd.Keb midwifery clinic was selected by simple random sampling. The dependent variable was anxiety in second stage of labor. The independent was flashcard affirmation treatment. The data were analyzed by Paired T test. Results: Effect of Flashcard Affirmation treatment on anxiety, control variable (Mean=-3.70; SD= 1.48; p< 0.001) was higher than treatment variable (Mean= -2.15; SD= 1.44; p< 0.001). Effect of flashcard affirmation on the duration of second stage of labor, control variable was higher (Mean= -8.88; SD= 3.81; p< 0.001) than treatment variable (Mean=-1.02; SD= 1.17; p< 0.001). Conclusion: Maintaining the mother’s psychological condition can be done by giving positive affirmations to the mother, besides that the support of husband and family is also an important point, for that research that may be carried out to develop this research is the role of husband support in the smooth delivery of labor. Keywords: flashcard affirmation, second stage of labor, anxiety Correspondence: Esty Puji Rahayu. Universitas Nahdlatul Ulama Surabaya. Jl. SMEA no.57, Surabaya. Email: esty@unusa.ac.id Mobile: 085755196600. DOI: https://doi.org/10.26911/the7thicph.03.49

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Supriyatiningsih, Iman Permana, Yossie Budi et Pramitha Esha. « Lumbar Epidural Analgesia : Shortening Time of Active Phase at First and Second Stage of Labor ». Dans 4th International Conference on Sustainable Innovation 2020–Health Science and Nursing (ICoSIHSN 2020). Paris, France : Atlantis Press, 2021. http://dx.doi.org/10.2991/ahsr.k.210115.038.

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Aghaei, S. A., et H. Shakouri G. « A Nonlinear Dynamic Model of Female Labor Supply : Iran Case Study ». Dans 2008 Second UKSIM European Symposium on Computer Modeling and Simulation (EMS). IEEE, 2008. http://dx.doi.org/10.1109/ems.2008.88.

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He, Wei. « Study on Evaluation of Harmonious Labor Relations of Chinese Private Enterprises ». Dans 2010 Second International Conference on Modeling, Simulation and Visualization Methods (WMSVM). IEEE, 2010. http://dx.doi.org/10.1109/wmsvm.2010.22.

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Rahayu, Esty Puji, et Lailatul Khusnul Rizki. « EFFECT OF AFFIRMATION FLASHCARDS ON LEVEL OF ANXIETY IN SECOND STAGE OF LABOR AT MIDWIFERY CLINIC, EAST JAVA ». Dans The 7th International Conference on Public Health 2020. Masters Program in Public Health, Universitas Sebelas Maret, 2020. http://dx.doi.org/10.26911/the7thicph-fp.03.04.

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ONO, YOSHIO, YUJI KOHSETSU et KIWAO SHIBUKAWA. « POGO ground simulation test of H-I launch vehicle's second stage ». Dans 28th Structures, Structural Dynamics and Materials Conference. Reston, Virigina : American Institute of Aeronautics and Astronautics, 1987. http://dx.doi.org/10.2514/6.1987-785.

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Surtiningsih, Linda Yanti et Wilis Sukmaningtyas. « The Effectiveness of Pelvic Rocking Exercises on the Length of Time of the First and the Second Stage of Labor ». Dans 1st International Conference on Community Health (ICCH 2019). Paris, France : Atlantis Press, 2020. http://dx.doi.org/10.2991/ahsr.k.200204.028.

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Xu, Mingyao, et Takaaki Morie. « Numerical simulation of the second stage regenerator in a 4K GM cryocooler ». Dans ADVANCES IN CRYOGENIC ENGINEERING : Transactions of the Cryogenic Engineering Conference - CEC. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4860834.

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Rapports d'organisations sur le sujet "The second stage of labor simulation"

Miguel Cardemil, José, Alan Pino, Allan Starke, Ignacio Calderón-Vásquez, Ian Wolde, Carlos Felbol, Leonardo F. L. Lemos et al. Guidelines for Simulation Tools and Monitoring the Performance of SHIP Systems. IEA SHC Task 64, juin 2024. http://dx.doi.org/10.18777/ieashc-task64-2024-0004.

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The integration of solar thermal technologies into the industrial sector represents a significant move toward sustainable energy utilization. This report presents a comprehensive analysis of various methodologies regarding the design, implementation, and operational management of solar thermal plants. The focus of this analysis encompasses a broad spectrum of approaches that are fundamental to optimizing the efficiency and effectiveness of these renewable energy systems. This document presents the most significant outcomes of the second stage of Subtask C: Simulation and Design Tools, specifically Task 64/IV, jointly developed under the framework of the International Energy Agency's Solar Heating and Cooling Programme and SolarPACES. Throughout the four-year execution of the Task, Subtask C brought together 50 participants from academia, applied research, and project developers from 15 countries. The combination of state-of-the-art research, existing technical documentation, and on-the-ground experience of project developers adds value to the outcomes of this analysis.

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Leaver, Clare, Owen Ozier, Pieter Serneels et Andrew Zeitlin. Recruitment, Effort, and Retention Effects of Performance Contracts for Civil Servants : Experimental Evidence from Rwandan Primary Schools. Research on Improving Systems of Education (RISE), septembre 2020. http://dx.doi.org/10.35489/bsg-rise-wp_2020/048.

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This paper reports on a two-tiered experiment designed to separately identify the selection and effort margins of pay-for-performance (P4P). At the recruitment stage, teacher labor markets were randomly assigned to a pay-for-percentile or fixed-wage contract. Once recruits were placed, an unexpected, incentive-compatible, school-level re-randomization was performed, so that some teachers who applied for a fixed-wage contract ended up being paid by P4P, and vice versa. By the second year of the study, the within-year effort effect of P4P was 0.16 standard deviations of pupil learning, with the total effect rising to 0.20 standard deviations after allowing for selection.

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Flabbi, Luca, et Mauricio Tejada. Gender Gaps in Education and Labor Market Outcomes in the United States : The Impact of Employers` Prejudice. Inter-American Development Bank, décembre 2012. http://dx.doi.org/10.18235/0011443.

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This paper makes three contributions to the existing literature. First, it provides descriptive evidence on gender differentials by education level in the US labor market over the last twenty years. Second, it uses the structural estimation of a search model of the labor market to identify and quantify the impact of employers' prejudice on labor market gender differentials. Third, it connects both the descriptive and the analytical findings to recent policy interventions in the US labor market and presents some policy experiments. The results show that prejudice may still have a role in explaining the evidence on gender differentials and there is at least one scenario where the possibility of the presence of prejudiced employers in the labor market has substantial effects. In particular, it is responsible for the reversal of the returns to schooling ranking in recent years and it may explain up to 44% of the gender wage gap of the top education group (Master and PhD) in 2005. Since prejudice is still important, policy interventions may be effective in attaining both efficiency and welfare gains. The paper is in favor of implementing an affirmative action policy because it is frequently able to close the gender gap without reducing overall welfare and because it is effective in targeting the group that should take center stage in the future debate about gender differentials: high-skilled, high-earners workers, who also have family responsibilities.

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Bloch, G., et H. S. Woodard. regulation of size related division of labor in a key pollinator and its impact on crop pollination efficacy. Israel : United States-Israel Binational Agricultural Research and Development Fund, 2021. http://dx.doi.org/10.32747/2021.8134168.bard.

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Despite the rapid increase in reliance on bumble bees for food production and security, there are many critical knowledge gaps in our understanding of bumble bee biology that limit their colony production, commercial management, and pollination services. Our project focuses on the social, endocrine, and molecular processes regulating body size in the two bumble bee species most important to agriculture: Bombus terrestris in Israel, and B. impatiens in the USA. Variation in body size underline both caste (queen/worker) differentiation and division of labor among workers (foragers are typically larger than nest bees), two hallmarks of insect sociality which are also crucial for the commercial rearing and crop pollination services of bumble bees. Our project has generated several fundamental new insights into the biology of bumble bees, which can be integrated into science-based management strategies for commercial pollination. Using transcriptomic and behavioral approaches we show that in spite of high flexibility, task performance (brood care or foraging) in bumble bee colonies is associated with physiological variation and differential brain gene expression and RNA editing patterns. We further showed that interactions between the brood, the queen, and the workers determine the developmental program of the larva. We identified two important periods. The first is a critical period during the first few days after hatching. Larvae fed by queens during this period develop over less days, are not likely to develop into gynes, and commonly reach a smaller ultimate body size compared to workers reared mostly or solely by workers. The facial exocrine (mandibular and hypopharangeal) glands are involved in this queen effect on larva development. The second period is important for determining the ultimate body size which is positively regulated by the number of tending workers. The presence of the queen during this stage has little, if at all, influence. We further show that stressors such as agrochemicals that interfere with foraging or brood care specific processes can compromise bumble bee colony development and their pollination performance. We also developed new technology (an RFID system) for automated collection of foraging trip data, for future deployment in agroecosystems. In spite of many similarities, our findings suggest important differences between the Eurasian model species (B. terrestris) and the North American model species (B. impatiens) that impact how management strategies translate across the two species. For example, there is a similar influence of the queen on offspring body size in both species, but this effect does not appear to be mediated by development time in B. impatiens as it is in B. terrestris. Taken together, our collaboration highlights the power of comparative work, to show that considerable differences that exist between these two key pollinator species, and in the organization of young bumble bee nests (wherein queens provide the majority of care and then transition away from brood care) relative to later stages of nest development.

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Garceau, Sean. PR-283-20207-R01 Field Trial of Solar Turbines Methane Emissions Reduction Solution for Gas Compressors. Chantilly, Virginia : Pipeline Research Council International, Inc. (PRCI), juillet 2022. http://dx.doi.org/10.55274/r0012230.

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The Methane Emissions Reduction solution designed by Solar Turbines was installed and evaluated at the Berkshire Hathaway Energy (Dominion) Chambersburg station in Pennsylvania, USA. Solar Turbines supplied a dry seal recompression (DSR) system and a process vent recompression (PVR) system at the station. The objective of the field trial was to evaluate the durability of this new system, compare the performance in the field to simulation models and as needed make improvements to the mechanical design and/or software control. The dry gas seal recompression system was installed and connected to a Solar Turbines C402 process compressor dry seal primary vent to capture, hold, and reuse dry seal gas leakage. The process vent recompression system was connected to the C402 compressor discharge piping to capture the process gas during pressurized hold and inject it back into the suction line in lieu of venting the gas to atmosphere. Operational data for the two systems was collected for 22-months starting in January 2020 and ending in October 2021. Data was collected at different sample rates; high speed (10ms, 100ms), 1 second, 10 seconds, and 1 hour through historical logs and analyzed for this period of time to evaluate the durability of the systems. Several enhancements were implemented and validated. Data collected during a 12-month period showed that a recycle line and volume bottles on the suction of the compressor helped optimize the performance of the compressor and increased durability. In addition, the use of the auxiliary drain recapture tank on the DSR system allowed for the achievement of a capture rate greater than 99% and resolved issues associated with leakage back into the compressor's first stage inlet during the charge period of the cycle.

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Yatsymirska, Mariya. Мова війни і «контрнаступальна» лексика у стислих медійних текстах. Ivan Franko National University of Lviv, mars 2023. http://dx.doi.org/10.30970/vjo.2023.52-53.11742.

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The article examines the language of the russian-ukrainian war of the 21st century based on the materials of compressed media texts; the role of political narratives and psychological-emotional markers in the creation of new lexemes is clarified; the verbal expression of forecasts of ukrainian and foreign analysts regarding the course of hostilities on the territory of Ukraine is shown. Compressed media texts reflect the main meanings of the language of the russian-ukrainian war in relation to the surrounding world. First of all, the media vocabulary was supplemented with neologisms – aggressive and sad: “rashism”, “denazification”, “katsapstan”, “orks”, “rusnia”, “kremlins”, “parebrik”, “in the swamps”, “nuclear dictator”, “putinism”, “two hundred” and others. Numerals acquired new expressive and evaluative meanings: “200s” (dead), “300s” (wounded), “400s” (russian military personnel who filed reports for termination of the contract), “500s” (hopelessly drunk russian soldiers, alcoholics who are unable to perform combat tasks). The language of war intensified the slogans of the struggle for state independence and people’s freedom. The scope of the greeting “Glory to Ukraine! – Glory to Heroes!”. New official holidays have appeared in the history of Ukraine since 2014: “Heroes of the Heavenly Hundred” Day (February 20), “Ukrainian Volunteer Day” (March 14), “Defenders and Defenders of Ukraine Day” (October 14), “Volunteer Day” (5 December). As you know, the professional holiday of the military is the Day of the Armed Forces of Ukraine” (December 6). A special style is characteristic of media texts on military topics: “Iron Force of Ukraine” (Iron Force of Ukraine), “digitize the Army” (for effective simulation of military operations); “grain corridor” (export of Ukrainian grain to African and European countries); “don’t let Ukraine lose” (the position of the Allies at the first stage of the war), “Ukraine must win!” (the position of the Allies in the second stage of the war); “in the Russian-Ukrainian war, the thinking of the 19th century collided with the thinking of the 21st century”, “a politician is a person who understands time” (Grigori Yavlinskyy, Russian oppositionist); “aggressive neutrality” (about Turkey’s position); “in Russia”, “there, in the swamps” (in Russia), “weak, inadequate evil” (about Russia), “behind the fence”; “a great reset of the world order”; “technology of military creativity”; “they are not Russian and not Ukrainian, they are Soviet”, “people without mentality”, “in Ukraine and without Ukraine” (Vitaly Portnikov about a separate category of Russian-speaking citizens in Ukraine); “information bed of Ukraine” (about combat operations on the front line; “when a descendant asks me what I did in those terrifying moments, I will know what to answer. At the very least, I did not stand aside” (opinion of a Ukrainian fighter). Compressed in media texts is implemented in the headline, note, infographic, chronicle, digest, help, caption for photos, blitz poll, interview, short articles, caricature, visual text, commercial, etc. Researchers add “nominative-representative text (business card text, titles of sections, pages, names of presenters, etc.) to concise media texts for a functional and pragmatic purpose.” accent text (quote, key idea); text-navigator (content, news feed, indication of movement or time); chronotope”. A specific linguistic phenomenon known as “language compression” is widespread in media texts. Language compression is the art of minimization; attention is focused on the main, the most essential, everything secondary is filtered out. Compression uses words succinctly and sparingly to convey the meaning as much as possible. For example, the headline “Racism. What is the essence of the new ideology of the Russian occupiers?”. The note briefly explains the meaning of this concept and explains the difference from “nazism” and “fascism”. Key words: compressed media text, language compression, language of war, emotional markers, expressive neologisms, political journalism.

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