bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mechanical and 1st Chemical Cleaning of NEK Steam Generators
Authors: Kelavić Robert , Turalija Marko 
Published: March 2023

Sludge removal is performed on two steam generators (SG’s) at the Krško Nuclear Power Plant (NEK) during every outage. SG’s are a meeting point of five major plant systems: Reactor Coolant System (RC) on the primary side and four systems on the secondary side – Auxiliary Feedwater System (AF), Blowdown System (BD), Main Feedwater System (FW), and Main Steam System (MS). Sludge removal activities take place on the secondary side of the SG’s on the top of the tube sheet. It always consists of classical Sludge Lancing (SL) which is done by spraying water at different angles (30°, 90°, 150°) between the tube gaps in the steam generator tube bundle with a pressure of around 220 bars. Another method is Inner Bundle Lancing (IBL) which means spraying water directly inside the tube bundle with a traveling lance tape with a spraying nozzle at the end. Water is sprayed at an angle or directly on the top of the tube sheet with a robot-guided manipulator which is placed inside a steam generator. The manipulator and therefore the spraying action is controlled by an operator and at times it is fully autonomous to provide the highest protection measures possible. Another method of sludge removal which was for the first time utilized in 2019 at the Krško site was Chemical Cleaning (CC) of both SG’s. During this process, a chemical was injected into the SG’s through the BD system and periodically pumped between the two SG’s to create a dynamic flow and maximize the cleaning effect. To achieve the best results, a constant temperature of the chemicals had to be maintained at all times. Upon completion of chemical cleaning, a rinsing phase was followed to remove any post-treatment chemicals. After all sludge removal activities, a televisual inspection (TVI) of the top of the tube sheet was performed to access the hard sludge area and to search for potential foreign objects in the SG’s. If for instance an object of importance during TV inspection is found, an attempt to retrieve it would usually take place. Other methods of sludge removal such as upper bundle flushing or ultrasonic cleaning have not been implemented in NEK thus far.
Since the power plant uprate in May 2000, NEK conducted SL on both SG’s every outage also starting with IBL in 2013 and 2015, and the same method was used in the 2018 outage. During the outage in 2019, all three methods (SL, IBL, and CC) have been utilized with the main purpose to extend the full load operation of the plant, preventing and/or stopping denting processes in the SG’s from occurring, reducing and stopping the build-up of hard sludge area to increase/sustain efficiency and remove foreign objects found in the SG’s. SG’s U-tubes are a barrier between the primary side coolant and the secondary side of NEK and the environment. Therefore, it is crucial to keep the highest level of integrity of the U-tubes because any leak could potentially mean a release of radioactive material into the atmosphere. This paper describes the purpose and workflow of sludge removal activities in the outage of 2019 in NEK.
Pratiques et défis de l'usage des Technologies Numériques pour l'évaluation Pédagogique
Authors: LAOUFI Adil , ELKACHRADI Rachid 
Published: March 2023

Cet article a pour objectif d'étudier, l'apport de l'introduction des technologies et des outils numériques dans l'activité de correction ainsi que le processus d'enseignement et d'évaluation. L'objet de cet article porte dans un premier temps sur l'analyse des procédures d'évaluation en pédagogie, nous analyserons aussi le contexte général d'évolution des pratiques d'évaluation, nous présenterons après quelques pratiques et les instruments qui sont déjà utilisés et quel est en général l'impact de ces outils sur la qualité de la formation et sur la performance pédagogique, enfin nous analyserons l'apport de l'utilisation d'une méthode semi-automatique basé la correction automatique des QCM utilisé par l'ensemble des universités marocaines.
Introduction. Le Procès de civilisation à l’œuvre à Taïwan Littérature formosane et civilité ou l’hypothèse de la transitionnalité
Authors: Gros Ivan 
Published: March 2023

Cet article présente la théorie littéraire de la transitionnalité et interroge la pertinence d’une application de cette théorie au contexte taïwanais. D’une part, il commence par mettre en perspective la définition de la civilité. Trois théories s’efforcent d’articuler le concept de civilité avec les pratiques littéraires : celles de Norbert Elias, de Jürgen Habermas et d’Hélène Merlin-Kajman. Dans les trois cas, la littérature, en tant qu’institution, établit des liens singuliers entre individus. Ces liens sont au fondement des sociétés dites « modernes » et plus principalement au cœur du principe démocratique. Il revient à Hélène Merlin Kajman de forger une théorie littéraire originale à partir de ces liens singuliers qu’elle qualifie, à la suite de Donald Winnicott, de transitionnel. D’autre part, l’article présente quelques études sociologiques qui montrent – quand bien même discrètement – le développement de la société taïwanaise à travers ses institutions littéraires. Ce rapprochement pourrait confirmer le rôle transitionnel de la littérature dans l’avènement d’une société « pour soi », suivant l’expression employée par David Schak. L’enjeu de cet article est bien de montrer les conditions potentielles d’applications de cette théorie au contexte taïwanais. Ainsi, la transitionnalité pourrait contribuer au débat propre aux études taïwanaises.
Psychiatrie périnatale, une proposition systémique
Authors: Garcia-Orad Ignacio 
Published: March 2023

Cet article est la version écrite de la plénière que nous avons animée lors des 14 e Journées de Lyon. Il présente une approche systémique de la périnatalité. Nous décrirons l’évolution dans la manière de soigner le naître, et ses présupposés historiques, philosophiques, anthropologiques et éthiques. Nous pensons que ces présupposés agissent de manière voilée dans la conception du soin. L’obstétricien nous dit : « Le bébé se porte bien. » Cette phrase labellise une opérativité de la réalité très partielle. Nous présenterons en réponse les principes d’une obstétrique de la complexité et d’une périnatalité systémique qui prennent en compte la globalité des participants, familles et réseaux.
Optical Coherence Tomography Angiographic Evaluation of Macular Vessel Density in Diabetic Macular Edema After Intravitreal Dexamethasone Implants: A Prospective Interventional Trial
Authors: Capelanes Nelson C. , Malerbi Fernando K. , Novais Eduardo A. , Regatieri Caio Vinicius S. 
Published: March 2023

Background and Objective:
The goal of this study was to assess macular vascular density evolution, macular thickness, and functional outcomes after intravitreal dexamethasone implants for diabetic macular edema.

Patients and Methods:
Vascular density was evaluated with optical coherence tomography (OCT) angiography in 21 eyes. Macular thickness was evaluated with structural OCT. Visual acuity and contrast sensitivity were evaluated before and after treatment, and these functional outcomes were analyzed for association with anatomic outcomes. Macular vessel density in the superficial capillary plexus was evaluated with OCT angiography and quantified in areas with no fluid, allowing a more accurate measurement and eliminating the segmentation bias in areas with intra-retinal fluid. Such a methodology was possible by positioning the scans only in areas with no fluid before and after the implant. The absence of fluid in these areas was confirmed by three experienced evaluators using both the B-scan and the en face. Visual acuity and contrast sensitivity were evaluated before and after treatment, and these functional outcomes were analyzed for association with anatomic outcomes.

Results:

At 30, 60, and 90 days after implantation, there was improvement in macular perfusion in areas without fluid after intravitreal dexamethasone implantation, accompanied by reduced macular thickness and improved visual acuity (
P
< .001). However, there was no improvement in contrast sensitivity after treatment.

Conclusions:
Improved macular perfusion after treatment with intravitreal dexamethasone implantation may be associated with modulation of leukostasis, when the release of cytokines leads to capillary endothelial damage and obstruction of the micro-vasculature, leading to impaired capillary perfusion and ischemic damage. Despite the anatomical and functional findings demonstrated, further studies are needed to prove the relationship between the inflammatory mechanisms of diabetic macular edema and its relationship with macular perfusion and functional aspects.

[
Ophthalmic Surg Lasers Imaging Retina
2023;54(3):174–182.]
A Deep Learning-oriented Practical Training Course for Computer Application Skills
Authors: Guiwen Jiang 
Published: March 2023

With the rapid development of computer technology and constant advance of teaching information reform in the field of higher education, how to cultivate qualified computer talents in teaching seems particularly important. However, the current computer teaching is still based on theoretical teaching, the application form of teaching methods is unitary, and the teaching effect is not ideal. In this study, on the basis of Moodle platform, a teaching mode of deep learning was constructed using the guiding concept of multiple intelligences theory. This model was mainly performed in three stages through three links, which corresponded to three levels of deep learning. In this study, 100 students majoring in computer science were taken as research objects for teaching practice, and students’ learning ability was measured and assessed through numerous methods, such as questionnaire survey, classroom observation, work assessment, and interview. The validity of this model was verified through an analysis and summary of experimental data. Results suggest that deep learning mode can effectively develop students’ computer ability and improve their learning initiative and innovation. This study verifies that online teaching mode based on deep learning is effective and is of certain significance and implication for the development of the course of computer technology.
Analysis of Device Mismatches Effect on the Performance of UWB Receiver Front-End in Wireless Body Area Network Sensor Nodes
Authors: Thaar A.Kareem  , Saif Benali  , Hatem Trabelsi  
Published: March 2023

Today it is important to manufacture high quality integrated circuits which are insensitive to device mismatches. This paper presents an analysis of MOSFET transistors mismatches effect on the performance of UWB receiver front-end which constitute the most important part of Wireless Body Area Network sensor node. The receiver is based on Balun LNA with 25% fully differential double-balanced passive mixer. A PMOS and NMOS transistors mismatch models were proposed to determine LNA output offset voltage and mixer offset current respectively. The analysis result suggests that, to minimize NMOS current mismatch, and thus reducing second-order inter modulation distortion, the overdrive voltage must be maximized. A Monte Carlo and harmonic balance simulations were performed using 0.18µm CMOS process to evaluate the impact of mismatch as well as Vth mismatch on the receiver gain and IIP2. Simulation results show that IIP2 of the receiver is less sensitive to mixer NMOS mismatch but receiver gain is more sensitive. The receiver IIP2 confidence interval in case of NMOS mismatch is [24.674, 24.77]dBm and in case of NMOS Vth mismatch is [24.659, 24.857]dBm. This show the robustness of the proposed UWB receiver front end. Therefore the proposed circuit meets the requirement of UWB system perfectly which make it suitable for WBAN applications.
Antiaggreganti piastrinici e anticoagulanti: le competenze dell’internista
Authors: Dentali Francesco , Silingardi Mauro 
Published: March 2023

La terapia antiaggregante nelle sindromi coronariche acute.
S. De Servi, A. Landi, C. Montalto, G. Crimi, S. Savonitto
La terapia antiaggregante nella vasculopatia cerebrale acuta.
M. Giorgi Pierfranceschi
Impiego degli anticoagulanti nella fibrillazione atriale.
B. Broccatelli, A. Patriarchi, M. Giustozzi, C. Becattini
La terapia del tromboembolismo venoso.
F. Dentali
La terapia anticoagulante nel paziente oncologico.
M. Ziliotti, L. Terroni, M.C. Ugolotti, C. Cademartiri
La terapia anticoagulante orale nel paziente anziano, fragile o complesso.
A. Dellasalda, A.Tedde, D. Arioli
Efficacy and Safety of Conivaptan versus Tolvaptan in Neurocritically Ill Patients
Authors: Smetana Keaton S. , Wiss Adam L. , May Casey C. 
Published: March 2023

Abstract

Background:
Vasopressin receptor antagonists increase serum sodium through increased aquaresis via inhibition of V2 receptors. The purpose of this study was to compare the efficacy and safety of conivaptan versus tolvaptan for the treatment of hyponatremia.

Subject and Methods:
This was a retrospective study of patients who received conivaptan or tolvaptan for hyponatremia admitted to the neurocritical care unit. Serum sodium values were collected at baseline and daily up to 4 days after the last dose. The primary efficacy outcome was an increase in serum sodium ≥4 mEq/L in 24 h after the first vaptan dose. The primary safety outcome was overcorrection defined by an increase in serum sodium >12 mEq/L in 24 h. Results: Thirty-four encounters (14 conivaptan and 20 tolvaptan) were included. Baseline serum sodium was similar between groups (conivaptan 126 mEq/L and tolvaptan 125 mEq/L). Each group received a median of one vaptan dose received on days 5 and 7 of hospitalization for conivaptan and tolvaptan, respectively. The primary efficacy outcome was similar between conivaptan (9 of 14, 64.3%) and tolvaptan (14 of 20, 70%) groups, P = 1.0, and the median change in serum sodium 24 h after the first vaptan dose was 5 versus 7 mEq/L (P = 0.377), respectively. The rate of overcorrection was similar between conivaptan and tolvaptan patients (7.1% vs. 15% P = 0.627).

Conclusion:
In this study, conivaptan compared to tolvaptan for the treatment of hyponatremia in patients admitted with a primary neurological diagnosis appears efficacious and safe. Further studies are warranted given the sample size of this cohort.
Mortality risk analysis for patients with severe coronavirus disease 2019 pneumonia
Authors: Dai Hui , Huang Renjun , Shang Yalei , Huang Jian'an , Su Nan , Zeng Daxiong , Li Hongmei , Li Yonggang 
Published: March 2023

BACKGROUND:
Coronavirus Disease 2019 (COVID-19) is currently a global pandemic. Information about predicting mortality in severe COVID-19 remains unclear.

METHODS:
A total of 151 COVID-19 in-patients from January 23 to March 8, 2020, were divided into severe and critically severe groups and survival and mortality groups. Differences in the clinical and imaging data between the groups were analyzed. Factors associated with COVID-19 mortality were analyzed by logistic regression, and a mortality prediction model was developed.

RESULTS:
Many clinical and imaging indices were significantly different between groups, including age, epidemic history, medical history, duration of symptoms before admission, routine blood parameters, inflammatory-related factors, Na+, myocardial zymogram, liver and renal function, coagulation function, fraction of inspired oxygen and complications. The proportions of patients with imaging Stage III and a comprehensive computed tomography score were significantly increased in the mortality group. Factors in the prediction model included patient age, cardiac injury, acute kidney injury, and acute respiratory distress syndrome. The area under the receiver operating characteristic curve of the prediction model was 0.9593.

CONCLUSIONS:
The clinical and imaging data reflected the severity of COVID-19 pneumonia. The mortality prediction model might be a promising method to help clinicians quickly identify COVID-19 patients who are at high risk of death.
KOLAM TOWN, DELI SERDANG DISTRICT EMPOWERMENT OF SMALL MEDIUM ENTERPRISES (UKM)
Authors: Lubis Muya Syaroh Iwanda , Sabili Muhammad 
Published: March 2023

ABSTRACT This activity aims to improve the quality of financial accounting, the quality of packaging and the Small and Medium Enterprises (UKM) trademarks in Pond Village. The problems faced by Partners here are; (1) financial management can be said to be not maximal where only used paper is used, the calculations are only digging holes and closing holes (there is no calculation of capital and profits, it is not uncommon for capital and profits to be used for other purposes) and (2) packaging of banana chips using kilo sugar plastic so that the packaging often leaks, tears, and is not attractive and does not yet have a trademark. The solutions offered here, Partners are given training, education, mentoring, outreach, and submission of Appropriate Technology (TTG) regarding the problems faced by Partners. The method of implementing the service program will be carried out in an approach, namely obtaining initial information until the activity process is carried out by direct communication or through intensive communication tools with Partners, so that the implementation of activities can be carried out in a guided manner, with the main objective to improve the welfare of Partners in managing Small and Medium Enterprises (SME). UKM), namely banana chips business . manner, with the main objective to improve the welfare of Partners in managing Small and Medium Enterprises (SME). UKM), namely banana chips business.Keywords: Empowerment Of Small Medium Enterprises (UKM), Kolam Town
Percepciones de los estudiantes sobre la educación física en el programa It Grows: actividad física, deporte e igualdad de género (Student perceptions of physical education in the It Grows program: physical activity, sport and gender equality)
Authors: Lamoneda Prieto Javier , Rodríguez Rodríguez Bárbara , Palacio Eulisis Smith , Matos Duarte Michelle 
Published: March 2023

El propósito de este estudio es evaluar un programa de intervención que promueve la igualdad de género en la educación física (EF) utilizando una metodología multidimensional basada en la Teoría de la Autodeterminación (TAD), utilizando el Modelo de Educación Deportiva (ED) y la Pedagogía Sociocrítica. El programa de intervención se analizó mediante un método cualitativo, la evaluación de las opiniones de los participantes sobre los resultados de la intervención. Participaron en el programa 88 estudiantes (16,91 años; SD=0,55), 58% mujeres. El programa de intervención siguió las recomendaciones de la Guía para la Promoción de la Actividad Física entre las Niñas (PAFIC). La intervención incluyó dos acciones curriculares: una intervención de educación física basada en ED de 18 sesiones y una guía de enseñanza/aprendizaje sobre la igualdad de género en la educación física; y dos acciones en el entorno escolar: evento deportivo y exhibición. Los resultados demuestran la eficacia del programa en la promoción de la igualdad de género en la educación física. Las principales áreas temáticas de los comentarios del alumnado fueron: la satisfacción de las Necesidades Psicológicas Básicas (NBP): autonomía, relación y novedad, la participación igualitaria y la motivación en la EF.
Palabras clave: igualdad; género; educación deportiva; motivación; adolescentes.
Abstract. The purpose of this study is to evaluate an intervention program promoting gender equality in physical education (PE) using a multidimensional methodology based on the Self-Determination Theory (SDT), using the Sport Education Model (SE) and socio-critical pedagogy. The intervention program was analysed using a qualitative method, evaluation of the opinions of participants on the results of the intervention. Some 88 students (16.91 years; SD=0.55) participated in the program, 58% female. The intervention program followed the recommendations of the Guide for the Promotion of Physical Activity among Girls (PAFIC). The intervention included two curricular actions: a PE intervention based on the SE of 18 sessions and a teaching/learning guid on gender equality in PE; and two actions in the school environment: sports event and exhibition. The results demonstrate the effectiveness of the program in promoting gender equality in PE. The main thematic areas of student comments were: the satisfaction of Basic Psychological Needs (BPN): autonomy, relatedness and novelty, equal participation and motivation in PE.
Key words: equality; gender; sport education; motivation; adolescents.
Evolución de los conocimientos sobre alimentación y nutrición en ESO y bachillerato (Evolution of knowledge about food and nutrition in ESO and high school)
Authors: Luciañez-Sanchez Gema , LeBaut-Ayuso Yannick , Valls Bautista Cristina , Solé-Llussà Anna 
Published: March 2023

La sociedad presenta un aumento en la prevalencia de sobrepeso y obesidad, sobre todo en adolescentes. El abandono de la forma tradicional y saludable de alimentarse y un estilo de vida cada vez más sedentario, están detrás de este aumento, entre otras razones. Una forma de paliar estos efectos es la de formar en materia de hábitos saludables desde la infancia. Para describir el nivel de conocimientos asimilados en el ámbito de la nutrición y alimentación por el alumnado de cursos comprendidos entre primero de la ESO y segundo de Bachillerato se realizó y administró un cuestionario a 182 alumnos. Los resultados muestran que la media de respuestas correctas en primero de la ESO es de 3,72 sobre 11 mientras que, a segundo de Bachillerato, esta media se duplica hasta 7,61. De modo que, a medida que avanzan los cursos, los estudiantes profundizan en los conceptos analizados sobre nutrición y alimentación y asimismo adquieren un sentido en su contexto real.
Palabras clave: nutrición, dieta, alimentación, hábitos saludables, educación secundaria
Abstract. Society has an increase in the prevalence of overweight and obesity, especially in adolescents. The abandonment of the traditional and healthy way of eating and an increasingly sedentary lifestyle are behind this increase, among other reasons. One way to alleviate these effects is to train in healthy habits from childhood. To describe the level of knowledge assimilated in the field of nutrition and food by the students of courses comprised between the first of the ESO and the second of the Baccalaureate, a questionnaire was designed and administered to 182 students. The results show that the average of correct answers in the first year of ESO is 3.72 out of 11, while in the second year of high school, this average doubles to 7.61. So that, as the courses progress, the students delve deeper into the concepts analyzed about nutrition and food and also acquire a meaning in their real context.
Keywords: nutrition, diet, feed, healthy habits, secondary education.