bluuebunny/crossref_metadata_2025 huggingface dataset:
Adapting New Testing Methods to the Tangent Screen
Authors: Pace R
Published: January 2024

Tangent screen examination has remained a popular method for detecting visual field defects in spite of the recent availability of more sophisticated perimetric instrumen­tation. Many techniques used with these newer instruments can be adapted for use with the tangent screen in order to enhance its sensitivity in detecting early field problems. Some of these techniques, including the glaucoma screening method of Armaly and Drance, are discussed with this emphasis.
Variation de Puissance dans la Peripherie de Lentilles Progressives
Authors: Simonet P , Papineau Y , Gordon D
Published: January 2024

Un dispositif adapté à un focométre à projection de type Nikon permet la mesure de puissance dans la périphérie d'une lentille ophtalmique. 3 types de lentilles progressives ont été étudiés, le Varilux 2, l’Ultravue, et le NZ. Dix lentilles de chaque type ont été mesurées, la puissance de l'addition variant de +1,00 à +3,00 dioptries. Une représentation graphique des résultats permet d'établir des hypothèses sur les caractéristiques optiques des lentilles étudiées.
Contact Lenses in Aphakia
Authors: Ruben C.M.
Published: January 2024

This paper discusses complications deriving from cataract extraction which are relevant to the fitting of contact lenses.
Comparison of the Distance and Near Vistech Vision Contrast Test Systems (VCTS)
Authors: Woo G.C , Bohnsack H
Published: January 2024

This paper describes the essential principles associated with the clinical use of a contrast sensitivity function (CSF) test to document vision loss or improvement. Some advantages of the CSF over the more conventional visual acuity test are described as well as the type of CSF losses associated with several ocular and neurological conditions. Contrast sensitivity was measured on each of 12 normal subjects ages 21 to 27 years on two separate occasions using both the distance and near versions of the Vistech Vision Contrast Test System charts (VCTS). Analysis of the variance showed that the results obtained using the distance and near chart were not significantly different. The contrast sensitivity scores elicited on the second trial, as compared to the first, were found to be consistently higher at all frequencies. This im­provement associated with repeated testing is clinically evident among a high percentage of subjects tested but not statistically significant at the .05 level.
The Pattern Evoked Electroretinogram: Origin, Characteristics and Clinical Usage
Authors: Lovasik J.V. , Kothe A.C.
Published: January 2024

This paper consists of a literature review of the clinical observations of the pattern electroretinogram (pERG) and theories concerning its origin. Normative data are presented for subjects aged 20 to 29 years to document variations in pERG response character­istics as a function of selected stimulus parameters. Clinical cases of visual neural dysfunction are also presented to illustrate the usage of pERGs in the realm of electrodiagnostic testing. Emphasis is placed on new or complimentary information provided by these retinal potentials.
Rights of Low Vision Children and Their Parents
Authors: Hill J.L
Published: January 2024

This paper will deal with the rights -medical, educational and rehabilitative -of a very special population of children. Children that are "at risk" because of their recognized visual impairment, as well as being "at risk" because some of their basic needs are not being met. Statistics for 1984 indicate that there are over 3,000 legally blind children under age 19 in Canada.  Pratt sug­gested that there are four times as many partially sighted children as there are legally blind. If this is in fact true, there may be as many as 12,000 low vision children in Canada.
Case Report: Congenital Drusen of the Retina and Hypertrophy of the Retinal Pigment Epithelium in the Same Eye
Authors: Williams T.D
Published: January 2024

The patient is a 24 year old caucasian female with no history of ocular or systemic disease and normal visual acuity in each eye. The right eye was urtremark­able, both centrally and peripherally. In the left foveal region a number (roughly a dozen) of orange-colored, discrete circular spots were seen in the deep retina.
STATE OF THE ART AND PROSPECTS FOR THE EVOLUTION OF WHITE LEDS WITH NEAR NATURAL LIGHT EMISSION
Authors:   V. Lashkaryov Institute of Semiconductor Physics of NAS of Ukraine, Pekur D.V.
Published: January 2024

Innovative technologies for the production of modern LEDs have allowed leading manufacturers (Seoul Semiconductor, Samsung, Cree) to develop their own ways of producing highly efficient white LEDs characterised by radiation parameters close to natural light. Modern LED light source development technologies have led to a sharp decrease in the use of white light guides with a colour rendering index in the range of 70-75, while the new most efficient LEDs have a colour rendering index of at least 80, and LEDs with a colour rendering index of more than 90 are becoming more widely used. LEDs with a correlated colour temperature in the range of 3000-4500 K, which were not as commonly used before due to their lower efficiency, have become more widespread. To create energy-efficient lighting, it is now considered important to create LED lighting devices with a spectral composition of radiation close to white natural light, as it is the most acceptable for improving the psycho-physiological state of a person and adequate perception of the environment. The most comfortable and safe for humans is the value of the correlated colour temperature of light close to 4000-4500 K and the colour rendering index of more than 90 units. Leading lighting companies are successfully working on solving this problem. This paper analyses ways to improve the luminous efficiency and colour rendering index of white LEDs used by leading manufacturers of modern LEDs. The most efficient white LEDs with a colour rendering index in the range of 93-96 and a luminous efficiency of 105-200 lm/W are considered. In the face of fierce competition, leading manufacturers are addressing the issue of improving the quality of LED lighting equipment in their own ways, which ensures the continuous development of LED technologies. The maximum theoretically determined spectral efficiencies of white LEDs are about 370 lm/W, which may indicate possible significant achievements and significant prospects for the further development of LED lighting technology.
ULTRASMALL QUANTUM DOTS: FEATURES OF SYNTHESIS, OPTICAL PROPERTIES AND PROSPECTS FOR PRACTICAL USE (REVIEW)
Authors:   V. Lashkaryov Institute of Semiconductor Physics of NAS of Ukraine, Korbutyak D.V.
Published: January 2024

In recent years, interest in ultra-small (on the order of 2 nm) quantum dots (QDs) has increased. This subset of CTs includes clusters of magic sizes corresponding to a certain, clearly defined number of atoms. Ultrasmall CTs are characterized by unique properties - sharp absorption of light and almost complete surface luminescence. They are promising for a variety of applications, ranging from dye-sensitized solar cells, white light LEDs, and biomedical sensing due to their controllable electronic structure and large specific surface area. In this review, modern methods of synthesis of ultrasmall quantum dots are considered: the method of high-temperature organic synthesis, the method of hot injection, sonochemical synthesis of QDs of magical sizes, etc. Ultra-small quantum dots are used in solar cells. Due to their large surface-to-volume ratio, compared to traditional materials, they have a higher absorption efficiency, meaning they can convert a higher percentage of incident light into electricity. In contrast to the traditional production of solar cells based on organic solutions, which require high-temperature processing or an inert atmosphere during sputtering, and also have low stability in the open air, a method of processing solar cells with a solution containing PbS/ZnO is proposed. of nanocrystals in open air and at room temperature. Ultrasmall quantum dots are used in medicine due to their unique properties. Overall, they have several advantages over traditional imaging and sensing tools, such as higher brightness, longer fluorescence lifetimes, and tunable emission spectra. Current research is focused on increasing the stability and biocompatibility of quantum dots and developing new methods for their inclusion in various biomedical applications.
Innovación educativa: explorando el impacto del aula invertida en el rendimiento académico de estudiantes de secundaria en matemática
Authors: Rodríguez Jiménez Franmis José , Pérez Ochoa Maria Elena , Ulloa Guerra Óscar
Published: January 2024

El aula invertida es un modelo pedagógico innovador que permite a estudiantes adquirir el conocimiento previo fuera del aula y luego en clase trabajar en actividades prácticas y colaborativas para aplicar y profundizar su aprendizaje. El objetivo del estudio fue evaluar el impacto del aula invertida sobre el rendimiento académico de estudiantes de nivel secundario en el área de matemática. Se realizó un estudio cuasiexperimental con un enfoque cuantitativo. La muestra incluyó 2 docentes y 134 estudiantes de tercer grado de secundaria del Liceo Ercilia Pepín de San Francisco de Macorís, República Dominicana, divididos en grupo experimental (invertido) y de control (tradicional). Se utilizó dos instrumentos: una guía de observación del proceso (cuaderno del investigador); y una prueba de conocimiento para el alumnado participante (examen), aplicada como pre-test y post-test. Además, se extrajo información importante desde las plataformas Classroom y Edpuzzle. Las calificaciones obtenidas desde las plataformas y a través de los exámenes, una vez analizados mediante pruebas estadísticas (t de Student), demostraron un impacto positivo del aula invertida en el rendimiento académico del estudiantado del grupo experimental (pre-test: M = 7.26, DE = 2.59; post-test: M = 9.12, DE = 2.87), frente al estudiantado de la clase tradicional (pre-test: M = 6.59, DE = 2.66; post-test: M =  7.22, DE = 2.77) a un nivel de significancia α = .05 y un IC de 95% (.857 - 2.940). Como conclusiones, existen diferencias estadísticamente significativas entre el rendimiento académico de estudiantes que recibieron clases de matemática mediante aula invertida y estudiantes que lo hicieron bajo una metodología tradicional. Como recomendación principal y línea futura de investigación, en virtud de la naturaleza evolutiva de las Tecnologías de la Información y la Comunicación (TIC) y su impacto en el proceso de enseñanza-aprendizaje, se sugiere a la comunidad científica que se lleven a cabo otros estudios longitudinales y comparativos para medir el progreso a lo largo del tiempo y, de esta forma, analizar cómo diferentes variables, como el acceso a la tecnología, la participación activa del alumnado y la retroalimentación constante, influyen en los resultados.
Systematic evaluation of Rutongshu oral liquid based on chromatographic fingerprinting and nontargeted metabolomic analysis
Authors: Fan Zheng , Xu Yuling , Lu Mengya , Yan Lanmeng , Du Fangping , Xu Jing , Tong Xiaohui , Han Rongchun
Published: January 2024

Based on chromatographic fingerprinting combined with quantitative analysis on characteristic chemical constituents as well as hierarchical cluster analysis, an easy and sensitive approach utilizing high performance liquid chromatography (HPLC) was developed for the identification and quality evaluation of Rutongshu oral liquid (ROL). What is more, nontargeted metabolomic analysis was conducted to gain a global view in terms of its chemical profile. In this study, 16 peaks from different batches (S1–S10) of ROL samples produced by Taihe Hospital of Chinese Medicine were selected as common peaks for the evaluation of their similarity whose values of all tested 10 batches exceeded 0.90 when compared with the control fingerprints. Meanwhile, simultaneous quantification of five markers in the oral solution, including albiflorin, paeoniflorin, chlorogenic acid, quercetin and ferulic acid was performed, and standard curves established for respective reference substances showed good regression in the linear range (r2 > 0.999) with recoveries in the range of 98.96–102.35%. The ultra-high performance liquid chromatography (UHPLC) combined with Orbitrap Exploris 120 mass spectrometer resulted in 88 identified compounds. The results of validation showed that the established method was reproducible, precise and stable. This study offers an effective, dependable and useful approach for the systematic evaluation of the hospital formulation ROL.
Decentralization of Public Authorities in Ukraine: Administrative-legal, Environmental, Social and Customs Aspects
Authors: Hladii Oleksandr , Bondarchuk Oleksandr , Zhadan Yevgeny , Kucher Ihor , Samus Vadym
Published: January 2024

The purpose of the research is to reveal the administrative-legal, environmental, social and customs principles of decentralization of public authority in Ukraine. Main content. The article reveals the main definitions of decentralization of power, analyzes advantages and disadvantages of the decentralization process in the public administration system. The article also presents the basic typology of decentralization of power in foreign countries and characterizes these types, as well as an attempt to summarize the reasons for performing decentralization in Ukraine.  Methodology:  The use of systemic, functional, and structural methods in this study made it possible to define concepts, types, as well as to establish the reasons for introduction of the decentralization reform in Ukraine. Conclusions. Various approaches to performing the reform in European countries and its results have been considered, which is due to the need to implement decentralization in Ukraine. The result of the work consists in determination of the main definitions of the decentralization of power, analysis of advantages and disadvantages of the decentralization process, definition of the main types of decentralization, as well as generalization of the main reasons for introduction of decentralization in Ukraine.
Polska polityka historyczna w ocenie współczesnego ruchu narodowego
Authors:   Uniwersytet Mikołaja Kopernika w Toruniu, Radomski Grzegorz
Published: January 2024

The aim of this article is to analyse the political thought of the contemporary National Movement in terms of politics of history. The main research hypothesis assumes that the National Movement promotes its own vision of politics of history. The properly shaped politics of history is primarily intended to shape national identity and facilitate the definition of boundaries of the national community. The actions taken by other political entities operating in Poland were assessed from this perspective. They were often accused of conducting anti-national activities. Liberals were criticised for ignoring history and accepting its critical form, while conservatives were accused of lacking organisational capacity and being submissive to competing models of the politics of history shaped by other nations. Hence the offensive character and the justification for using the language of disfavour or even hostility and hatred. The national interest, remaining the main category of political thought, often became an argument that made polemic or discussion impossible. Attempts to pass over uncomfortable historical events or to shift meanings were not avoided either. The differentiation of national groups facilitated discussion within the milieu, but it practically did not play an independent role within Polish political thought, reinforcing the message associated with the conservative model of politics of history and, in the political sphere, often supporting the activities of Law and Justice. Recognising the usefulness of politics of history, however, it was emphasised that it is not a shortterm political event-type activity but a long-term political work.
Rola prawosławia w filozofii politycznej Aleksandra Dugina
Authors:   Uniwersytet Opolski, Rubisz Lech
Published: January 2024

A. Dugin’s political philosophy is permeated with mysticism and Orthodox Christian religiosity, which leaves a strong mark on such political ideas as Eurasianism, anti-Occidentalism, the Russian World and Dugin’s original Fourth Political Theory. The role of the Russian philosopher in forming of the domestic political thought and politics itself suggests an analogy to the same role of Carl Schmitt in fascist Germany, including an analogy to the discussion on this role. The authors hypothesise that regardless the controversy of this issue, A. Dugin is considered both as an articulator of the spirit of deeply dormant views in Russian society and in part of the elite, as well as a thinker who reinforces this spirit and provides deep moral and philosophical justifications for the Russian opinion-makers. The purpose of this article is the interpretation of Dugin’s theory in the political science senses paying attention particularly to the role of Russian Orthodox Christianity in it. Thus chosen methodological perspective prejudges the structure of the study.
Samorząd i decentralizacja w myśli politycznej Hansa-Hermanna Hoppego
Authors:   Uniwersytet w Siedlcach, Święcicki Łukasz
Published: January 2024

The aim of this article is to reconstruct and analyse the ideas of self-government and decentralisation present in the thought of a leading representative of anarcho-capitalist libertarianism, Hans-Hermann Hoppe. In the previous research on the history of political thought concerning local government, there is no study that would concern the attitude of libertarianism to local communities. In the study of libertarianism, in turn, as well as in libertarian thought itself, the issues of self-government, decentralisation or local government are rather a side issue, absent in the course of the main considerations. The counter-intuitive nature of libertarianism as a doctrine that advocates an anarcho-capitalist order, which excludes the existence of state institutions, also argues in favour of addressing the title topic. Contrasting the anarcho-capitalist view of self-government and decentralisation with the contemporary dominant understanding of local government may contribute to enriching the discussion within normative local government theory with new conclusions and perspectives. This article, due to the limited scope of the research, is only a contribution to further studies on the problem of self-government and decentralisation in libertarian thought.
Pojęcie technologii w dyskursach polskiej Lewicy, Centrum i Prawicy . Analiza posiedzeń Komisji Cyfryzacji, Innowacyjności i Nowych Technologii w świetle krytycznej analizy dyskursu E. Laclaua i Ch. Mouffe
Authors:   Uniwersytet Jagielloński w Krakowie, Sajduk Błażej , Samek Wiktor ,   Sciences Po w Paryżu
Published: January 2024

This study emphasizes the often overlooked role of technology in Polish politics and aims to analyse its interaction with the ideological stances of the parliamentary Left, Right, and Center. Drawing on the critical discourse analysis framework of E. Laclau and Ch. Mouffe, the authors argue for a reevaluation of the concept of ‘technology’ and its implications. They demonstrate how this redefinition significantly impacts the preferred model of state intervention in technology regulation within specific political contexts. To achieve this, the researchers thoroughly examined transcripts from the deliberations of the Committee on Digitization, Innovations, and New Technologies during the 9th term of the Sejm. This text serves as an introductory overview, laying the groundwork for a more extensive exploration of the intricate relationship between technology and politics. The combination of critical discourse analysis and thematic content analysis proves to be a valuable research approach for this endeavour.
Specyfika badań politologicznych w Polsce
Authors:   Uniwersytet Mikołaja Kopernika w Toruniu, Szewczak Wiktor
Published: January 2024

The aim of the article is to examine whether and what are the characteristics of political science research and reflection conducted in Poland. To achieve this, two dimensions of specificity were distinguished, namely disciplinary specificity (features that distinguish political science from other disciplines, especially those within the social sciences) and local specificity (characteristic features of Polish political science compared to the discipline practiced in other countries, particularly Anglo-Saxon). The specificity of Polish political science was then analysed in four fundamental areas that determine the discipline’s identity: 1) the subject of research, 2) research methods, 3) subdisciplinary structure, and 4) structure of theories functioning within the discipline.
Metodologie łączenia analizy treści z analizą dyskursu . Przykład badań nad dyskursem medialnym dotyczącym inwigilacji i prywatności
Authors:   Uniwersytet Mikołaja Kopernika w Toruniu, Seklecka Aleksandra
Published: January 2024

The article is methodological and focuses on the study preparation process. The analysis addresses the use of different approaches (induction, deduction) and methods of research (quantitative and qualitative content analysis, discourse analysis, critical discourse analysis) to study privacy media discourse. The article aims to promote a multidisciplinary approach to research by demonstrating the possibilities of using different research approaches. The text also shows obstacles that may appear in this type of study. To illustrate the discussed subject, two studies referred to media discourse on privacy in selected Polish media and media discourse on Pegasus, which the author and the team conducted.
Czynniki warunkujące liczbę kandydatek w wyborach bezpośrednich organów wykonawczych gmin w Polsce po 2002 roku
Authors:   Uniwersytet w Białymstoku, Bartnicki Sławomir
Published: January 2024

This article presents the determinants of a certain number of women running for municipal executive positions in direct elections from 2006 to 2018 in 2421 municipalities in Poland. The results reveal a persistent pattern of determinants of female candidates’ recruitment. The increased interest of women in these positions is influenced, among other things, by the candidacy of women in previous elections both for municipal councils and, above all, for executive positions. Fewer female candidates are found in municipalities with stronger political incumbents. The levelling of the discovered pattern is disrupted when municipalities are in debt. High debt initially deters women from running and then attracts them. This means that female candidates appear in indebted municipalities in which men are less interested, behave as representatives of minority groups and do not compete in numbers unlike men.
To the Brighter Side. New Tendencies in Erecting Statues of Bodhisattva Jizō in Japanese Buddhist Temples
Authors:   Tohoku Gakuin University, Donnere Alīse Eishō
Published: January 2024

Japan is a predominantly atheistic country, however, Buddhism is still keeping its influence on society. Firstly, funerals are mostly performed according to the Buddhist ritual. Secondly, several times a year the majority of Japanese families visit their relatives’s graves in cemeteries, belonging to Buddhist temples. As a result, Buddhism is associated first of all with death and funeral. Buddhist priests try to make the image of Buddhism brighter in many ways. In this article, we will look at one of these ways – erecting statues that depict simultaneously the beloved bodhisattva Jizo, the priests themselves, visitors and the dead relatives.
Rozważania na temat państwowości Riukiu czasów nowożytnych
Authors:   Uniwersytet Jagielloński w Krakowie, Meyer Stanisław
Published: January 2024

In this article, I argue against the widely accepted view among Japanese historians that the Ryukyu Kingdom of early modern times belonged to the Japanese bakuhan system while retaining its status as a foreign country. Placing Ryukyu within the bakuhan framework corresponds with the deterministic narrative of history that justifies Japan’s annexation of Ryukyu on one side, and Okinawan people’s choice of Japanese identity on the other. The claim of “foreign country inside the bakuhan system” is difficult to defend in light of theories of state that emphasize the importance of the interaction between society and state institutions. Ryukyu, as a separate social entity, had no influence on the shape of the bakuhan system and, conversely, the bakuhan system did not shape the Ryukyuan society.
Czynniki determinujące kontynuowanie wojny rosyjsko-ukraińskiej
Authors:   Uniwersytet Wrocławski, Koczan Marcin
Published: January 2024

On February 24, 2022, Russian troops attacked the territory of Ukraine, starting a new phase of the conflict that has been ongoing since 2014. Due to the difference in potential between Russia and Ukraine, most analysts expected a relatively quick end of military operation. Although several months have passed since the attack, there are no signs that the war will end soon. On the contrary, most indications indicate that the conflict will not end any time soon. The authorities of both sides declare their willingness to start peace negotiations, but they set preconditions unacceptable to the other side. Societies seem determined to continue the war, or at least there are no widespread symptoms of defeatism. Russia’s military potential has not reached a critical level that would make it impossible to wage a full-scale war, and the economic situation is better than predicted a few months ago. Ukraine’s continued resistance depends on the extent of assistance it receives from its allies. The article describes the factors that prove the continuation of military operations, but also the reasons for ending the war.
Russian Disinformation and Propaganda Campaign Justifying the Annexing of Crimea in 2014
Authors:   Uniwersytet w Białymstoku, Voytyuk Oksana
Published: January 2024

On February 26, 2014, the Russian Federation annexed the Crimean Peninsula. Russia’s unlawful actions have been condemned in the international arena, but this has in no way changed the decision of the authorities in the Kremlin. In order to prove the legitimacy of the occupation of Crimea, the Russian Federation launched a disinformation and propaganda campaign aimed primarily at the internal arena, i.e. at the Russians. The aim of the article is to analyze selected statements by Vladimir Putin regarding the annexation of Crimea and to try to answer the question of whether disinformation and internal propaganda were effective in convincing Russians that the occupation of Crimea was an act of restoring historical justice. For the purposes of the article, research methods appropriate for international relations were used.
Uwarunkowania międzynarodowe rozwoju sektora IT na Białorusi a przyczyny emigracji informatyków białoruskich w latach 2020–2021
Authors:   Uniwersytet Ekonomiczny w Krakowie, Lisiakiewicz Rafał
Published: January 2024

The aim of the article is to indicate the relevant factors shaping economic migrations from the perspective of the theory of international relations. The article concerns a crucial period for the immigration of IT workers from Belarus, i.e. the second half of 2020 and the first half of 2021. From the point of view of the theory of international relations, it should pay attention to two levels in research on the issues of economic cooperation: domestic and international one. In the article, the author will point out the link between migration and the international and political conditions of the development of the IT sector in Belarus. The research hypothesis put forward by the author is related to the link between the causes of migration and the economic and political conditions that developed in Belarus in the 21st century. Authoritarian systems, according to the author, may favor economic development and create conditions for running a business in a specific way, but the security of such activity itself is limited.
Turkey forever balances between East and West
Authors:   Jagiellonian University in Kraków, Olszowska Karolina Wanda
Published: January 2024

When looking at contemporary Turkish politics, an incorrect notion is often circulated that Turkey has only in recent years, as far back as under Recep Tayyip Erdoğan, begun a policy of balancing between East and West. The purpose of this article is to analyze Turkey’s posture – in terms of balancing between spheres of influence – after the end of World War II until Turkey joined NATO and then compare it with Turkey’s stance during the Justice and Development Party government in the context of relations with the United States and Russia. This will help answer the question: to what extent is Ankara’s current balkanizing attitude something surprising? Aren’t specific patterns of the 1945–1952 period similar to those of the 21st century, and the differences are the attitudes of Washington and Moscow rather than Ankara?
RST Switching Bi-controller Based Flatness for an Electronic Throttle Valve
Authors: Gharsallaoui Hajer , Gritli Wafa , Benrejeb Mohamed , Borne Pierre
Published: January 2024

In this paper, an RST switching bi-controller, based on flatness and on Luenberger observers, is designed to control the opening angle change of an Electronic Throttle Valve (ETV), to compensate unexpected external disturbances and to detect sensor faults. Two identified mathematical linear models are established to simulate the ETV for two different positions of the throttle plate. The use of robust RST switching bi-controller based-flatness approach by the development of closedloop control is proposed, in order to obtain a stable system tracking a desired flat trajectory. The switching between the two models using stateflow tool is based on residual values generated by using the Luenberger observers in order to detect and to localize sensor faults occurrence. The observer’s gains are determined using Linear Matrix Inequalities (LMIs) taking into account the stability of the system based on Lyapunov theory. The simulation results show the efficiency of the developed robust switching RST bi-controller based-flatness in terms of tracking the desired angle’s reference trajectory, rejecting disturbances and detecting sensor faults.
Referenciais inerciais e não inerciais: Uma abordagem cinemática por meio de videoanálise
Authors: Costa Maria Lúcia de Moraes , Campomanes Ricardo Robinson , Heidemann Leonardo Albuquerque
Published: January 2024

Nas abordagens introdutórias de Mecânica, seja no ensino superior ou na educação básica, as discussões em torno das diferenças entre os conceitos de referencial inercial e não inercial costumam ser restritas à Dinâmica, especialmente com a definição das leis de Newton, sem análises experimentais. No entanto, a noção de referencial é fundamental para a caracterização dos movimentos, mesmo que do ponto de vista estrito da Cinemática. Neste contexto, objetivamos fundamentar os conceitos de referencial inercial e não inercial a partir da exploração de uma atividade experimental com fins didáticos desenvolvida por meio de videoanálise. Especificamente, investigamos o lançamento de uma pequena bola em três situações de movimento relativo entre dois referenciais: movimento retilíneo uniforme; movimento retilíneo uniformemente variado, com aceleração e velocidade de mesmo sentido; e movimento retilíneo uniformemente variado, com aceleração e velocidade em sentidos opostos. Obtemos uma descrição cinemática embasada no Princípio de Relatividade de Galileu e nas relações de transformação entre referenciais inerciais e não inerciais, além dos ajustes das curvas de movimento obtidas pela videoanálise. Sugerimos que outros aspectos, como: invariância de escala, simultaneidade no tempo, e questões históricas relacionadas aos conceitos de referencial, movimento absoluto e relativo, possam ser encaminhadas nas discussões dos experimentos propostos.
Cowpea growth and production under water stress and soil mulching
Authors: Souza Tarso M. A. de , Souto Lauter S. , Dutra Filho João de A. , Santos Carlos S. de A. , Silva Luderlândio de A. , Peixoto Tayd D. C. , Sá Francisco V. da S.
Published: January 2024

ABSTRACT Cowpea is a crop of high socioeconomic importance for the semi-arid region of Brazil, although facing significant yield losses due to drought, requiring management strategies to overcome this scenario. From this perspective, this study aimed to evaluate the growth and yield of cowpea genotypes under drought in different cultivation systems. The statistical design was randomized blocks arranged in a 2 × 4 × 2 factorial scheme corresponding to two cowpea genotypes (BRS Pujante and Costela de Vaca), four levels of crop evapotranspiration (40, 60, 80, and 100%), and two cultivation systems (with and without soil mulching). The BRS Pujante showed a higher leaf area and 100-grain weight than Costela de Vaca under all levels of crop evapotranspiration. The cowpea yield parameters showed the best results at 80 and 100% crop evapotranspiration. Regardless of the genotype, soil mulching provided higher cowpea 100-grain weight values. Soil mulching combined with 80% crop evapotranspiration is an appropriate strategy for cowpea production.
Using mining waste from the Fundão Dam in Mariana for Mombasa grass production
Authors: Franco Tayssa M. , Plazas Gloria M. R. , Silva Vinícius L. , Oliveira Rubens A. de , Lima Marcus J. A. de , Cunha Fernando F. da , Pereira Odilon G. , Cecon Paulo R. , Alencar Carlos A. B. de
Published: January 2024

ABSTRACT The collapse of the Fundão Dam in Mariana, MG, in 2015 introduced the challenge of using Technosol, a soil type formed by deposition of iron mining waste along the Doce River banks, for agricultural purposes. This study aimed to determine the optimal water depth for enhancing production of tropical forage, Megathyrsus maximus cv. Mombasa, when grown on iron ore tailings. Additionally, it sought to establish a crop coefficient applicable to the edaphoclimatic conditions of Viçosa, MG, Brazil. The experiment was conducted throughout the summer, fall, and winter of 2022, employing 21 drainage lysimeters. A completely randomized experimental design was adopted, featuring six treatment groups (plants in Technosol receiving water depths ranging from 20 to 120% of the crop’s evapotranspiration, as derived from the control treatment), along with a control group (plants in Latosol with a depth of 100%), each with three repetitions. Our findings showed that irrigation must replace 40% of the crop evapotranspiration. Moreover, cultivating in Technosol resulted in a reduction of productive capacity by 37.39% during the summer/fall and fall seasons. For Mombasa grass grown in Oxisol, crop coefficients of 1.2 during the summer and 1.5 during the fall and winter are advised.
Physical characterization and description of the drying period with constant rate of jambu leaf paste
Authors: Gomes Francileni P. , Resende Osvaldo , Sousa Elisabete P. de , Célia Juliana A. , Araujo Neto Francisco R. de
Published: January 2024

ABSTRACT The objective of this study was to describe the constant drying flux stage, as well as obtaining the critical moisture content during the convective drying of jambu leaf paste crushed under different conditions and characterizing the physical properties of the material after drying. Drying was carried out in an air circulation oven at a speed of 1.0 m s-1 and temperatures of 60, 70 and 80 ºC and layer thicknesses of 0.005 and 0.01 m. To determine the constant rate stage, the mass fluxes and the drying rate were calculated. Segmented polynomials were used to estimate the critical moisture content. Under the analyzed conditions, a typical drying behavior was found, demonstrating the existence of a significant period of constant drying rate for the mass of ground jambu leaves. Critical moisture content as a function of thickness and temperature did not show a trend. The material showed favorable physical characteristics, such as high solubility and cohesiveness, free flow, and good wettability, characteristics that add value to the raw material and for the availability of a new product to the market in the condition of packaging.
Fertigation with copper in beet crop in a semi-arid region
Authors: Costa Romualdo M. C. , Grangeiro Leilson C. , Lima Renner B. de , Pereira Natali A. E. , Costa João P. N. da , Alves Anderson A. , Bezerra Larisa R. F. C. , Lacerda Rodolfo R. de A. , Sá Francisco V. da S. , Fernandes Bruno C. C. , Chagas Paulo S. F. das
Published: January 2024

ABSTRACT Copper is an essential element for beet; however, it needs to be made available in adequate quantities since this nutrient, which is a heavy metal, can cause toxicity to plants and/or humans. This study aimed to evaluate the agronomic performance of beet fertigated with copper in a semi-arid region of Brazil. Two experiments were carried out in complete randomized blocks, with five treatments (0, 1.5, 3.0, 4.0, and 6.0 kg ha-1 of copper) and four replicates. In 2019, the copper content was within the adequate range for beet. In 2021, fertigation with copper above 0.8 kg ha-1 led to contents in the phytotoxicity range, which may explain the reduction in total and tuberous root dry mass accumulation. Fertilization with copper increased marketable yield in 2019 (17.32 t ha-1 at the dose of 3.9 kg ha-1 of copper), while, in 2021, there was no fit of the equations. Copper fertilization altered the tuberous root pH but did not influence the other tuberous root quality components. Plants fertilized with copper accumulated more copper in the leaves than in the tuberous root, with a maximum accumulation of 6.0 kg ha-1 of copper in 2019 and 2021. Fertilization with 3.9 kg ha-1 suits soils with low copper content.
Development and quality of melon fruits grown under salt stress
Authors: Araújo Beatriz de A. , Celin Elaine F. , Costa Rafael S. da , Calvet Amanda S. F. , Carvalho Humberto H. de , Bezerra Marlos A.
Published: January 2024

ABSTRACT The need for studies that allow the use of brackish water in irrigated agriculture and the socioeconomic importance of melon cultivation in Brazil, especially for the Northeast region, which concentrates most of the national production and faces problems with the availability of good quality water for irrigation, motivated the present study. In this context, the objective of present study was to evaluate the growth, production and fruit quality of the ‘Goldex’ (yellow-type hybrid F1) melon under salt stress conditions. The experiment was performed in a completely randomized design, with two salinity levels of irrigation water (0.8 and 4.0 dS m-1) and eight evaluation times (52, 54, 56, 58, 60, 62, 64, and 66 days after transplanting). Variables of plant growth and development, production and quality of melon fruits were evaluated throughout the cycle. Plants had delayed growth characteristics and less development with the increase in irrigation water salinity, showing reductions of more than 20% in shoot dry weight, leaf area, number of branches and length of secondary branches and 16.7% in length of the main branch. In addition, salinity caused a delay in fruit development and a 16% reduction in final fruit weight, without significantly modifying carbohydrate and total soluble solids contents. Along the development, there was an increase in the total soluble solids content of the fruits, especially due to the increment of sucrose at the final stages of development.
Analysis and spatial prediction of water retention curves in two types of soil
Authors: Cortés-Delgadillo Diego L. , Camacho Tamayo Jesús H. , Giraldo Ramón
Published: January 2024

ABSTRACT Soil is a medium that stores and transfers air, water, nutrients and heat to microorganisms and plants. Its water storage capacity is studied by analysing water retention curves (WRCs), which establish the relationship between soil water content and the force with which water is retained. The objective of this work was to evaluate the capacity of functional geostatistics in predicting the spatial distribution of water retention curves in two types of soils. Experimental areas with two types of soil, Andisol and Oxisol, were selected, and a regular grid of 75 sites was established, from which water retention curves were obtained at two depths. The curves were subjected to geostatistical functional analysis (GF), and the applicability of this method was evaluated by obtaining the usable water table (LAA) and comparing the results with experimental data obtained using traditional methods. Based on cross-validation, it was verified that GF produced a better fit for the Andisol since the coefficient of determination between the LAA values for the measured data and predictions was high, with an R2 of 99%; however, the proposed methodology was also reliable for the Oxisol, since an R2 of 94% was obtained at the two depths studied.
Métodos de indução e condução do parto em um centro de parto normal peri-hospitalar: estudo transversal
Authors: Lopes Gisele Almeida , Teixeira Thais Trevisan , Leister Nathalie , Riesco Maria Luiza
Published: January 2024

RESUMO Objetivo: Descrever e analisar o uso de métodos de indução e condução do parto em centro de parto normal peri-hospitalar (CPNp). Método: Estudo transversal realizado em um CPNp localizado em São Paulo (SP), com a totalidade das mulheres atendidas de 2011 a 2021 (n = 3.397). Resultados: A maioria das mulheres (61,3%) não recebeu qualquer método. Os métodos foram utilizados isoladamente ou de forma combinada (medicina tradicional chinesa, massagem, óleo de rícino, chá estimulante, amniotomia e ocitocina). A medicina tradicional chinesa (acupuntura, acupressão e moxa) foi o método mais usado (14,7%) e a ocitocina foi o menos frequente (5,1%). Quanto maior o tempo de bolsa rota, maior o número de métodos utilizados (p < 0,001). A amniotomia esteve associada às transferências maternas (p < 0,001). Conclusão: A indução e condução do parto foram adotadas de forma restrita. Prevaleceu o uso dos métodos naturais ou não-farmacológicos. São necessários estudos clínicos robustos para comprovar a eficácia dos métodos não farmacológicos de estímulo do parto, além de estratégias para sua implementação em outros serviços de assistência ao parto, para realmente comprovar a eficácia de métodos não farmacológicos no processo de parturição, isto é: no trabalho de parto e nascimento.
Spatial analysis of care for patients undergoing dialysis therapy in the state of Minas Gerais, Brazil, between 2015 and 2019
Authors: Pereira Claudio Vitorino , Leite Isabel Cristina Gonçalves , Nogueira Mário Círio , Ferreira Gustavo Fernandes
Published: January 2024

ABSTRACT Objective: To analyze the spatial flow of care for patients undergoing dialysis therapy in the health regions of the State of Minas Gerais. Methods: Ecological study whose population was patients undergoing dialysis therapy in public, philanthropic institutions or whose treatment was paid for by the Unified Health System in private clinics in partnership, in the State of Minas Gerais. Patients were grouped by health region of residence. The proportions of patients who underwent dialysis were calculated, as well as enrollment on the kidney transplant list in their own region of residence or outside it. Person correlations of these proportions with socioeconomic and care indicators of the health regions were estimated. Spatial exploratory techniques estimated general (Moran’s I) and local (LISA) spatial correlation coefficients. Results: Regions with higher GDP had a higher number of nephrologists and a higher proportion of registrations in the region of residence. A cluster of regions with low GDP was identified further to the northeast of the State (also with lower nephrologist ratio values), a cluster with a high proportion of those registered on the transplant list in the center of the State, and a cluster with a low proportion of dialysis in the same region of residence further southeast. Conclusion: Regional disparities were evident in relation to the proportion of patients registered on the waiting list for kidney transplantation, the proportion of patients undergoing dialysis in the same region of residence and the proportion of patients registered on the waiting list for kidney transplantation in the same region of residence. residence.
Teaching-service integration in the fight against COVID-19
Authors: Matos Thaís , Vilar Rosana Alves de
Published: January 2024

Abstract This study analyzes the teaching-service integration as a strategy for Permanent Health Education against COVID-19, in healthcare services of the Municipal Health Department of João Pessoa, in the state of Paraiba (SMS/JP). This is an exploratory, comprehensive-interpretative study with a qualitative approach. The scenarios were the SMS/JP services, which carry out actions to combat COVID-19 and serve as practice spaces for educational institutions. Data were collected through semi-structured interviews and focus groups, conducted with service managers, health professionals, residence coordinators, and residents. The analysis allowed us to identify the circumstances and adversities that arose during the period of agreements and renegotiations of practice scenarios during the pandemic. Also highlighting the contributions of the teaching-service integration to the qualification process of workers and students in the face of COVID-19 and the relationship with the needs of the services, from the qualification movements, elaboration of protocols, sheets, forms, and creation of discussion spaces. It was confirmed that teaching-service integration is a powerful permanent health education strategy, considering the articulation between service agents and educational institutions, provoking the development of a critical-reflective look at the service, boosting learning spaces, evolution, and growth.
Gestão em rede no atendimento ao acidente vascular cerebral: revisão integrativa de literatura
Authors: Brandão Paloma de Castro , Lanzoni Gabriela Marcellino de Melo , Pinto Isabela Cardoso de Matos
Published: January 2024

Resumo O objetivo deste artigo é analisar as publicações científicas sobre a gestão em rede no atendimento ao paciente com acidente vascular cerebral agudo, considerando as tecnologias implantadas e suas consequências para a atuação da equipe. Foi feita uma revisão integrativa de literatura, operacionalizada nas seguintes bases de dados: PubMed/Medline, Scopus, Literatura Latino-Americana e do Caribe em Ciências da Saúde e no Índice Bibliográfico Espanhol de Ciências da Saúde, de 2008 a 2022, com sintaxe de palavras-chave para cada base. A análise dos dados foi realizada por meio da similaridade de conteúdo, sendo posteriormente elaboradas as categorias. Foram selecionados 46 artigos para análise, um nacional e os demais publicados em periódicos estrangeiros. Ressaltam-se as tecnologias empregadas para ampliar a gestão em rede na atenção ao paciente com Acidente Vascular Cerebral isquêmico agudo, como a conexão entre serviços por fluxos e protocolos, por meio da regionalização, da telemedicina e de plataforma de smartphone, com a ampliação das funções da equipe intervencionista móvel, ou por elementos integradores, como a pré-notificação hospitalar.