bluuebunny/crossref_metadata_2025 huggingface dataset:
Inhibitory Subpopulations in preBtzinger Complex Play Distinct Roles in Modulating Inspiratory Rhythm and Pattern
Authors: Chang Zheng , Skach Jordan , Kam Kaiwen
Published: May 2024

Inhibitory neurons embedded within mammalian neural circuits shape breathing, walking, and other rhythmic motor behaviors. At the core of the neural circuit controlling breathing is the preBtzinger Complex (preBtC), where GABAergic (GAD1/2
+
) and glycinergic (GlyT2
+
) neurons are functionally and anatomically intercalated among glutamatergic Dbx1-derived (Dbx1
+
) neurons that generate rhythmic inspiratory drive. The roles of these preBtC inhibitory neurons in breathing remain unclear. We first characterized the spatial distribution of molecularly defined preBtC inhibitory subpopulations in male and female neonatal double reporter mice expressing either tdTomato or EGFP in GlyT2
+
, GAD1
+
, or GAD2
+
neurons. We found that the majority of preBtC inhibitory neurons expressed both GlyT2 and GAD2 while a much smaller subpopulation also expressed GAD1. To determine the functional role of these subpopulations, we used holographic photostimulation, a patterned illumination technique, in rhythmically active medullary slices from neonatal Dbx1
tdTomato
;GlyT2
EGFP
and Dbx1
tdTomato
;GAD1
EGFP
double reporter mice of either sex. Stimulation of 4 or 8 preBtC GlyT2
+
neurons during endogenous rhythm prolonged the interburst interval in a phase-dependent manner and increased the latency to burst initiation when bursts were evoked by stimulation of Dbx1
+
neurons. In contrast, stimulation of 4 or 8 preBtC GAD1
+
neurons did not affect interburst interval or latency to burst initiation. Instead, photoactivation of GAD1
+
neurons during the inspiratory burst prolonged endogenous and evoked burst duration and decreased evoked burst amplitude. We conclude that GlyT2
+
/GAD2
+
neurons modulate breathing rhythm by delaying burst initiation while a smaller GAD1
+
subpopulation shapes inspiratory patterning by altering burst duration and amplitude.
God’s Other Book The Qurʼān Between History and Ideology
Authors: Salama Mohammad
Published: May 2024

In God’s Other Book, Mohammad Salama presents a powerful critique of the ways we study and analyze early Islam and its sacred text, filling a glaring hole in our understanding of this formative environment. Interrogating the ideological framework of late antiquity, Salama exposes hidden assumptions that prevent scholars from truly placing Islam in its sociohistorical and cultural milieu. He offers an alternative theoretical and practical model focused on pre-Islamic Arabic cultural production. Foregrounding the indigenous Arab community of seventh-century Hijaz, Salama demonstrates how the Qurʼān played an organic role in commenting on, interacting with, and taking sides concerning matters of ethnicity, ethics, dress codes, and social habits. Only with renewed attention to the Qurʼān itself can Western readers engage ethically with Islamic studies and with the cultures and traditions of those who live according to another book.
Long bone uninfected non-union: grafting techniques
Authors: Gómez-Barrena Enrique , Ehrnthaller Christian
Published: May 2024

Long bone non-unions represent a serious clinical and socioeconomical problem due to the prolonged episodes, frequent sequelae, and variable treatment effectiveness.

Bone grafts, classically involving the autologous iliac crest graft as the ‘gold standard’ bone graft, enhance bone regeneration and fracture healing incorporating osteoconductive and/or osteoinductive/osteogenic capacity to the non-union under treatment.

Structural alternatives to autologous bone grafts include allografts and bone substitutes, expanding the available stock but loosing biological properties associated with cells in the graft.

Biological alternatives to autologous bone grafts include bone marrow concentration from iliac crest aspiration, bone marrow aspiration from reaming of the diaphyseal medullary canal in the long bones, and isolated, expanded mesenchymal stem cells under investigation.

When the combination with natural and synthetic bone substitutes allows for larger volumes of structural grafts, the enhancement of the biological regenerative properties through the incorporation of cells and their secretoma permits to foresee new bone grafting solutions and techniques.
WALANT surgery of the hand: state of the art
Authors: Degreef Ilse , Lalonde Donald H
Published: May 2024

Wide-awake local anesthesia no tourniquet is named the WALANT technique.

WALANT has had a major positive impact on cost, convenience, ecology, patient satisfaction, access to surgical care, and outcomes in hand surgery in the last 20 years.

Safe and efficient application of the technique is based on two principles.

The first principle is the tumescent injection of a large volume low concentration 0.25–1% lidocaine, with 1:100 000–1:400 000 epinephrine.

The second principle of WALANT is that the proper injection should be almost painless, with the patient only feeling the first needle poke of a tiny 30G needle.

This wide awake patient approach reduces pain, neuropraxia, and systemic side effects of sedation with preservation of motor control, thereby aiding balanced reconstruction in hand surgery.
Individualized megaimplants in acetabular revision arthroplasty: what have we learned in the last 15 years?
Authors: Gehrke Thorsten , Citak Mustafa , Akkaya Mustafa
Published: May 2024

Acetabular revision arthroplasty, a demanding field of reconstructive hip surgery, calls for innovative strategies to deal with challenging bone defects and implant failure seen in revision cases.

Conventional implant solutions might fall short of adequately addressing severe bone loss and ensuring stable fixation, highlighting the necessity of customized strategies.

Personalized megaimplants, distinguished by their tailor-made design and large-scale construction, present a viable option to overcome these challenges.

The present article provides an elaborate analysis of custom-made megaimplants in acetabular revision arthroplasty, shedding light on the underlying principles, design complexities, manufacturing methods, applications in the clinical setting, and outcome assessment.

The aim of this review is to present a comprehensive insight into personalized megaimplants and their contribution to the advancement of orthopedic surgery.
Economía de la información
Authors: Guao Samper Royman , Anido R. José Daniel , García Lobo Ligia N.
Published: May 2024

Dados los fallos del mercado, en la práctica los actores económicos toman muchas decisiones basados en información opaca y de baja calidad. Una de las causas de esta asimetría/opacidad se vincula con la ética de los responsables de presentar y auditar dicha información en las organizaciones/entidades de la economía, entre ellos, el contador público. Su importancia es reconocida en el más reciente Código internacional de ética para profesionales de la contabilidad, vinculando explícitamente su ejercicio profesional con el interés público. El artículo analiza la importancia de fortalecer la ética del contador público como herramienta y estrategia para reducir la opacidad en la información financiera en la era digital. Metodológicamente adopta la hermenéutica como técnica de análisis del discurso. Los principales hallazgos subrayan la necesidad de fortalecer la ética del contador público, de manera que el ejercicio de la práctica contable, además de fundamentarse en conocimientos técnicos, legislación y normatividad, se apegue a los principios establecidos en el Código Internacional de Ética para profesionales de la contabilidad.
Forensic entomology the neglected discipline of science
Authors: Hamad Mosab Nouraldein Mohammed , Abdullah Mohammed Medani Eltayeb
Published: May 2024

Medico-legal entomology is the study of the invasion of the succession pattern of arthropods with their developmental stages of different species found on the decomposed cadavers during legal investigations. Arthropods represent one of the major causes of death in poor countries, chiefly in the tropical African countries where many types of arthropods are present and there is no forensic specialist personnel’s and also there are no diagnostic tools. Collaboration between international organizations such as world health organization and local authorities must occur to increase the level of knowledge and practice of forensic entomology throughout the world, certainly in the tropical poor countries.
The social role of women in prehistoric Egypt: an analysis of female figurines and iconography
Authors: Abdelhafez Ahmed
Published: May 2024

Female figurines from most periods of ancient Egyptian history occur in a variety of contexts. These images were often fashioned from clay, faience, ivory, stone, and wood. Of these, female figurines discovered in funerary contexts are highly interesting: Did they represent family members of the deceased, or was it a sort of ritual that entailed placing a feminine model with deceased males to serve them in the afterlife? In this paper, I will primarily analyze the social role of women in prehistoric Egypt. Additionally, I will also assess artistic renditions and the overall iconography of feminine figurines from that period. The following questions will help to unravel the aspects: Why were female figurines placed in tombs? What are the artistic features specific to female figurines? What can we learn from the positions in which female figurines were placed? This paper will study examples of female figurine their artistic and social styles and draw comparisons to understand their development. As for the Feminine iconography in this period, we will show the depiction of woman on the antiquities since the age of Badari, with a discussing of the development of the feminine iconography, until the early dynastic era. Through these depictions, we will be able to-functional and social role through the depicted scenes on pottery vessels, mace heads, and tombs. The presence of feminine figurines and iconography in this early stage of the development of ancient Egyptian culture is indicative of the prominent role women essayed in daily life - as mothers, wives, and servants- an aspect the deceased wished to carry forward into the next world.
Separation of overlapping image objects using morphological operations
Authors: Ajwang PO , Kanali CL
Published: May 2024

In application of robots in harvesting of agricultural and horticultural crops, a common problem is the occurrence of overlapping objects in a scene. Typically, a partially obscured object must be conclusively identified and extracted before it can be picked by the robot. Morphological operations can be used to smooth edges of a region, force shapes onto region edges, count regions and estimate the size of regions. Morphological operators typically use set theories of intersection and union. The case of separating overlapping flowers is presented in this paper. Thresholding, followed by sequential erosion and dilation were successfully applied to separate overlapping flowers in a series of images.
Exoplanets detection using lite convolutional neural networks (LCNN)
Authors: Mamun Al-Mahmud Al , Hossain Md Rasel , Sharmin Mst Mahfuza
Published: May 2024

This research comprehensively reviews the historical trajectory of exoplanet discovery. Delving into significant milestones, we highlight the pivotal role in shaping our understanding of exoplanetary systems. Building upon this historical foundation, we propose an innovative approach employing a Lite Convolutional Neural Networks (LCNN) model for exoplanet detection utilizing the Kepler Dataset. By fusing advancements in machine learning, particularly CNNs, with the rich domain of exoplanetary studies, this research represents a pivotal stride towards automated, efficient, and precise exoplanet detection. Our LCNN model demonstrates exceptional performance, achieving a training accuracy of 76.92% and an outstanding testing accuracy of 99.12%. This notable accuracy differential indicates successful model generalization and promises reliable exoplanet identification. The study not only enriches our grasp of exoplanetary history but also underscores the transformative potential of machine learning in furthering our cosmic exploration.
Maternal Vitamin D Supplementation and Infantile Rickets: Secondary Analysis of a Randomized Trial
Authors: Lautatzis Maria-Elena , Keya Farhana K. , Al Mahmud Abdullah , Tariq Ulaina , Lam Carol , Morris Shaun K. , Stimec Jennifer , Zlotkin Stanley , Ahmed Tahmeed , Harrington Jennifer , Roth Daniel E.
Published: May 2024

BACKGROUND

The role of maternal vitamin D supplementation in the prevention of infantile rickets is unknown, particularly in low- and middle-income countries without routine infant vitamin D supplementation. Through secondary analysis of a randomized, placebo-controlled trial in Bangladesh, we examined the dose-ranging effects of maternal vitamin D supplementation on the risk of biochemical rickets at 6 to 12 months of age.

METHODS

Pregnant women (n = 1300) were randomized into 5 groups: placebo, or vitamin D 4200 IU/week, 16 800 IU/week, or 28 000 IU/week from second trimester to delivery and placebo until 6 months postpartum; or 28 000 IU/week prenatally and until 6 months postpartum. Infants underwent biochemical rickets screening from 6 to 12 months of age (n = 790). Relative risks (RR) and 95% confidence intervals (95% CI) of biochemical rickets were estimated for each group versus placebo.

RESULTS

Overall, 39/790 (4.9%) infants had biochemical rickets. Prevalence was highest in the placebo group (7.8%), and the risk was significantly lower among infants whose mothers received combined prenatal and postpartum vitamin D at 28 000 IU/week (1.3%; RR, 0.16; 95% CI, 0.03–0.72). Risks among infants whose mothers received only prenatal supplementation (4200 IU, 16 800 IU, 28 000 IU weekly) were not significantly different from placebo: 3.8% (RR, 0.48; 95% CI, 0.19–1.22), 5.8% (RR, 0.74; 95% CI, 0.33–1.69), and 5.7% (RR, 0.73; 95% CI, 0.32–1.65), respectively.

CONCLUSIONS

Maternal vitamin D supplementation (28 000 IU/week) during the third trimester of pregnancy until 6 months postpartum reduced the risk of infantile biochemical rickets. Further research is needed to define optimal postpartum supplementation dosing during lactation.
Application of dielectric and ТЕМ horns in phased antenna arrays
Authors: Trakhtman E. Yu.
Published: May 2024

The effect of the dielectric layer and metal horns on the characteristics of waveguide phased antenna arrays was studied using the finite element method. The geometric dimensions of the horns were optimized for better matching of the antenna array when scanning at an angle θ. Graphs illustrating the dependence of beam width and directivity on the number of elements in one side of the square array are plotted. Radiation patterns of the antenna array are plotted for different numbers of elements on one side of it.
Preparation of Fe-Si-B-(Cu,Nb,Ni,Mo) films by quenching from a vapor state
Authors: Ryabtsev S. I. , Kushnerov O. I. , Bashev V. F. , Kalinina T. V. , Dorozhka T. M.
Published: May 2024

Using modernized three-electrode ion-plasma sputtering, homogeneous thin films of Fe-Si-B-(Cu, Nb), and Fe-Si-B-(Ni, Mo) were obtained. The structure of the films was investigated by X-ray diffraction and electron microscopy. It was established that as a result of sputtering, amorphous and nanocrystalline phases with a coherent scattering region (CSR) size of 1.6 nm and 12 nm were formed in the Fe73Si16B7-(Cu, Nb)4 and Fe78.5Si6B14-(Ni, Mo)1.5 films. The thermal stability of metastable states of the films, as well as theelectrical and magnetic properties of freshly prepared and heat-treated films were studied. The conditions for obtaining films with small (modulo) values of the temperature coefficient of electrical resistance ( - 0.9∙10-5 K-1) and coercive force (HC ~ 11 A/m) were determined.
Attenuation of electromagnetic waves in liquid foams in the frequency range of 1 – 1250 MHz
Authors: Drobakhin O. O. , Filins’kyy L. A.
Published: May 2024

The purpose of this work is to study the attenuation of electromagnetic waves in the megahertz range (1 – 1250 MHz) in liquid foam structures. We consider issues related to shielding electromagnetic sources and reducing the visibility of metal objects from radar detection and tracking in this range, since such problem is poorly researched. A method of measuring the attenuation of foam structures in segments of strip lines of this range is proposed. Measurements are carried out using an experimental setup based on avector meter and an original strip cell of samples of foam structures with different foaming ratios in the ranges of 13 – 15, 28 – 30, and 50 – 51 units for different foaming agents. The dependencies of foam attenuation on frequency and the dependence on salt additives with concentrations of 1%, 4%, and 6% are found.
Features of gas environment influence on the electrical properties of nano- and microcrystals ZnO
Authors: Kovalenko O. V. , Vorovsky V. Yu. , Lyashkov A. Yu.
Published: May 2024

Nanocrystalline powder based on ZnO:Mn is used to create sensitive elements of gas sensors. It is shown that the nanocrystalline material has a structure similar, from an energy point of view, to the structure of micro-sized ZnO:Ag ceramics, which contains intercrystalline potential barriers formed by chemisorbed oxygen.Adsorbed water can have a significant effect on the electrical conductivity of sensors at operating temperatures below T = 100oC. When evacuated, flammable gases such as propane or butane influence electrical conductivity opposite to what is observed in a normal air atmosphere containing oxygen.
Permittivity measurement of nanocrystals ZnO:Mn at microwaves with using a biconical сavity
Authors: Drobakhin O. O. , Kovalenko O. V. , Saltykov D. Yu. , Vorovsky V. Yu.
Published: May 2024

The measurement of the dielectric constant of nanocrystalline materials at microwave frequencies using a biconical resonator is under consideration. Obtaining ZnO and ZnO:Mn (2%) nanocrystals is carried out under non-equilibrium conditions by the method of ultrasonic aerosol pyrolysis. Estimates of the dielectric constant of these samples in the range of 8–12 GHz were obtained. Dielectric constant estimates are 8,3±0,2 and 12,4±0,2, respectively.
Vibronic structure of absorption spectrum of 2,5-di-(2-benzoxazolyl)phenol
Authors: Syetov Y. A.
Published: May 2024

Vibronic structure of the absorption spectrum of 2,5-di-(2-benzoxazolyl)phenol is calculated using the Franck-Condon approximation and harmonic model for vibrations. 2,5-di-(2-benzoxazolyl)phenol is an organic compound that exhibits excited-state intramolecular proton transfer. It is found that the use of normal modes and values of energy of the electronic states calculated with the B3LYP density functional provides good agreement with the experimental spectrum in terms of the position of intense bands. The largest intensity of vibronic transitions is found for deformation vibrations changing the distance between the oxygen and nitrogen atoms of the hydrogen bond, a deformation vibration of the phenol ring, stretching vibrations of the benzoxazole moieties.
Até aqui nos ajudou um feminismo
Authors: Costa Andréa Lopes da , Silva Bruna Nascimento Rodrigues da
Published: May 2024

Este trabalho parte do pressuposto de que, embora as propostas políticas institucionais de combate à violência contra mulheres tenham avançado no Brasil, sobretudo devido às ações do ativismo e das reflexões produzidas no campo de estudos feministas, há uma lacuna no que se refere às proposições políticas efetivamente elaboradas e os debates produzidos pelos feminismos negros. Neste sentido, a partir da análise de 36 proposições legislativas da Câmara dos Deputados, que foram apresentadas entre 2011 e 2022 e viraram normas jurídicas, observaremos os avanços e as limitações a partir da perspectiva dos feminismos negros. Os resultados evidenciam que, apesar do inequívoco impacto das pautas feministas no Poder Legislativo, o conjunto de leis recentemente elaboradas reflete as demandas dos feminismos liberal e hegemônico, os quais tendem a produzir uma leitura unidimensional das mulheres, desconsiderando os efeitos da indissociável vinculação entre gênero, raça e classe.
Analysis of the Mechanism for Selecting Organizational and Technological Solutions for Integrated Management of Construction Processes
Authors: Ichetovkin A. O.
Published: May 2024

Purpose. The main purpose of this article is to thoroughly substantiate the possibilities of implementing a mechanism for selecting organizational and technological solutions to achieve parametric criteria for managing construction processes, especially under conditions of uncertainty. To achieve this goal, we use a functional model of the system-integrated approach, which allows us to systematize and coordinate management functions at the level of individual processes. Methodology. The study is based on the introduction of new requirements for standardization in the construction industry, in particular, on the use of the parametric method. This method can improve management strategies, methods, and technologies, as well as facilitate the implementation of innovative organizational and technological solutions. As a result, the quality and volume of construction can be improved, which, in turn, will help overcome the crisis and develop the construction industry. The management process involves achieving a key goal, namely the efficiency of project implementation, while construction has certain specifics that complicate the management process and require the use of more complex, integrated, and multi-directional organizational and technological solutions. Findings. In the current economic environment, which provides for both an increase in the number of risks in the construction sector and the size of their possible consequences, in the context of increasing (expanding the list) of quality requirements for construction projects, there is a reasonable need to search for and improve organizational and technological solutions in order to apply new approaches to the management of construction processes related to the practical implementation of the results of modern scientific and methodological research. The results obtained, however, indicate that the use of the parametric method creates new challenges for the efficiency of management in the construction industry. The increased number of management decision alternatives, identification of risks and improvement of consequence forecasting processes may cause certain difficulties. On the other hand, the lack of clear requirements can lead to increased costs and risks. Originality. The paper substantiates the necessity of using a system-wide algorithmic mechanism for the effective management of construction processes under conditions of uncertainty. This is important for adapting to modern challenges and ensuring the sustainable development of the construction industry. Practical value. The study makes it possible to determine the compliance of organizational and technological solutions with the established criteria and compare them to select the most effective one, in particular in terms of cost, efficiency and risk mitigation.
Tools for the Involvement of Construction and Demolition Waste in the Repeated Production Cycle
Authors: Shuvaev A. A.
Published: May 2024

Purpose. This paper aims to analyze and classify construction and demolition waste. It is necessary that this classification not only reflects statistical data on waste generation, but also serves as an information basis for the integrated waste management system (IWMS). The main task of this system is to maximize the involvement of waste in economic recycling and to objectively reflect the technological capabilities of its processing. This is extremely important in the context of the implementation of European waste management principles and the implementation of the National Waste Management Strategy in Ukraine until 2030. Methodology. The article considers the problems of construction waste management within the framework of the National Waste Management Strategy in Ukraine until 2030, which provides for the implementation of measures and principles of waste management, including construction waste. The author analyzes the management problems in the field of construction and demolition waste, which substantiates the need to classify construction waste with the simultaneous harmonization of processing methods and technologies. Construction activities are inextricably linked to the management of various types of resources, among which secondary materials play a key role in the implementation of construction processes. The ability to effectively manage the flows of these secondary resources is critical to ensuring the sustainability and efficiency of construction production. In this context, the study of the importance of managing the flows of secondary resources becomes an integral part of strategies for optimizing construction processes. Findings. Construction waste from the demolition of buildings and structures is unique due to its size and the need to prepare it for primary crushing. This is especially true in the context of implementing the concept of renovation of the outdated housing stock. Various static and dynamic methods of destruction of building materials, in particular, impact and vibration, have been investigated, with dynamic methods being characterized by lower energy consumption. Originality. The work reflects the formation of theoretical and methodological directions based on the use of recycled materials in construction, as well as a comparative characterization of various methods of destruction of building materials. Practical value. The possibilities of recycling construction waste, in particular, their maximum involvement in recycling, which meets the goals of the Strategy of Ukraine, provides 50% of waste recycling.
Determination of Energy-Optimized Locomotive Control During Train Acceleration
Authors: Kisliy D. M. , Desiak A. Y. , Bobyr D. V. , Bodnar E. B.
Published: May 2024

Purpose. In this article, the authors aim to improve the mathematical model of train movement by adapting the model to determine the values of diesel power at the corresponding values of train acceleration and different modes of train operation. Based on the model, it is planned to build and analyze two-parameter dependencies of locomotive control during acceleration, which provide steady acceleration on different track profile slopes for different values of train weight, which will allow for more rational management of the locomotive fleet with strict adherence to the train schedule and minimal diesel fuel consumption for traction. Methodology. To achieve this goal, we used the method of system analysis, nonlinear programming, and numerical methods for solving differential equations of train motion, taking into account that the integration of the equation of train motion can be carried out by path, time, and speed, depending on the initially set task in traction calculations. Calculations were performed for different modes and phases of train operation. Findings. To analyze the results, we compared the obtained traction calculations, such as technical speed, travel time, and fuel consumption. To solve the problem of traction calculations, we chose the Maple software package, which allowed us not only to numerically evaluate the results of solving the two-parameter mathematical model, but also to graphically and visually, which greatly simplifies their perception. The obtained results of the calculations indicate a decrease in energy consumption. Originality. The model of train movement has been further developed, taking into account the adaptation to determine the values of diesel power consumption in the case of steady-state values of train acceleration depending on the weight of the train and the slopes of the track profile. Practical value. The expediency of the study is to save energy resources, in particular diesel fuel, for train traction and allows more accurate adherence to the train schedule, which, in turn, affects traffic safety in general.
Critical Analysis of the Development of the Design of Lattice Tube Concrete Bridges with a Ride on Top
Authors: Spivak D. S. , Kliuchnyk S. V.
Published: May 2024

Purpose. The paper aims to highlight and substantiate the need to find rational design schemes for lattice tube concrete bridges with a ride on top based on the analysis of recent research and regulatory documents. Methodology. The current scientific research is analyzed to determine the current state of development of pipe concrete lattice structures. Methods for improving structures are presented. Combinations of filling the grating elements with concrete, variants of cross-sections of the grating elements, their advantages and disadvantages are analyzed. The state of building codes of Ukraine and other countries is considered in order to determine possible options for the design of pipe concrete bridge structures. Due to the lack of detailed research on this issue, the feasibility of implementing optimization studies for these structures and the steps necessary for this are determined. Findings. The optimization of pipe-concrete bridge structures is a relevant area of research, but it requires a multicomponent approach and the use of modern computer facilities. The method of linear optimization is proposed and its general steps for finding economic models are determined. It was found that the base of Ukrainian SCSs in the field of pipe and concrete structures is limited, but can be expanded by using European standards and other international regulations. Originality. The necessity of global development and improvement of pipe concrete gratings of bridge spans is highlighted. Attention is focused on the advantages of this area, which contributes to decision-making at the stage of selecting the type of bridge and detailed design of pipe-concrete lattice bridges. A methodology for finding the optimal grids is proposed, which can integrate existing methods of structural improvement and the requirements of regulatory documents. Practical value. The results of the study can be used to improve the design of pipe concrete bridges at the design stage. Optimization of gratings can help to increase the efficiency of construction and reliability of this type of bridge structure.
Changes to the Regulatory Definition of Climatic Loads and Impacts on Building Structures
Authors: Bannikov D. O. , Radkevych A. V. , Kosiachevska S. M.
Published: May 2024

Purpose. The main purpose of the publication is a qualitative and quantitative analysis of changes in climate loads associated with the introduction of the DBN V.1.2–2:2006 standard in the national regulatory framework, compared to the previous standard, as well as further changes to this standard. Methodology. To achieve this goal, both the standards for determining loads and impacts on building structures and the Amendments introduced, which provided for a number of innovations, were considered. The main emphasis is placed on the methodology for determining various types of climatic loads, including loads from the self-weight of soils, snow and wind loads, ice and wind loads, as well as the system for compiling combinations of these loads. The issue of terminology for the process of determining loads is covered. Findings. Based on the comparative analysis, it has been established that the approach to load combinations proposed in the Amendments allows obtaining higher values than all previously used approaches. The methodology for determining the load from the self-weight of soils remained unchanged. The methodology for determining snow and wind loads has been fundamentally changed. The final values of the loads are 2.5–3 times higher than the values in the previous standard. This is most evident in Sumy and Chernihiv regions of Ukraine. The methodology for determining the ice and wind load was supplemented in terms of taking into account the wind pressure in the presence of ice deposits. At the same time, the correlation with wind pressure in the absence of ice deposits is not clear enough. Originality. Changes in the methodology for determining the main types of climatic loads on building structures for the conditions of Ukraine, in particular, loads from the self-weight of soils, snow and wind loads, ice and wind loads, as well as the system for compiling combinations of these loads, were qualitatively and quantitatively assessed. Practical value. The data obtained make it possible to determine the ways and directions for further improvement and refinement of the existing methods for calculating the main climatic loads for the conditions of Ukraine.
Bacterial consortium of Azospirillum brasilense and Pseudomonas fluorescens on the stimulation of growth of corn culture
Authors: Sandini Itacir Eloi , Pacentchuk Fabiano , Franco Daniel Andrade de Siqueira , Sandini Anthony Hasegawa
Published: May 2024

ABSTRACT: The evaluation of plant growth-promoting bacteria in order to increase corn productivity is a biotechnology of global interest. This study evaluated the efficiency of the consortium between P. fluorescens CNPSo 2719(=CCTB03) and A. brasilense Ab-V06 in corn. Four experiments were carried out in four different locations, with a randomized block design and four replications, with the treatments: (1) without inoculation and without application of N coverage; (2) without inoculation and application of 100% of the recommended dose of N in coverage (200 kg ha-1 of N); (3) Azospirillum brasilense + application of 75% of the recommended dose of N in coverage (150 kg ha-1 of N); (4) bacterial consortium of Azospirillum brasilense + Pseudomonas fluorescens + application of 75% of the recommended dose of N in coverage (150 kg ha-1 of N). In all locations, with the use of the bacterial consortium (A. brasilense + P. fluorescens) + 75% of the recommended dose of N in coverage, it was possible to reduce the dose of N in coverage by up to 25% without compromising the productivity of the crop. In this way, it is concluded that the use of the consortium of the two bacteria promotes savings of up to 25% of N fertilization in top dressing and the possibility of using two microorganisms with the capacity to stimulation plant growth with a single application.
Do desamparo original à construção dos modos de vulnerabilidade e suas vicissitudes na Escola
Authors: Souza Soraya , Archangelo Ana , Mendonça Lilian Cardozo de
Published: May 2024

Neste artigo propomo-nos a construir uma reflexão teórico-prática sobre os modos de vulnerabilidade produzidos ou desencadeados nas dimensões territorial, econômica, histórica, social, cultural e psicopolítica da experiência humana, cujos efeitos se entrelaçam nas histórias dos sujeitos no interior da escola. Para tal discussão, apresentaremos alguns autores que abordam o conceito de vulnerabilidade. Em seguida, proporemos um conceito de vulnerabilidade que a diferencia do fenômeno do desamparo, mas que com ele se relaciona. A partir disso, apresentaremos algumas vinhetas oriundas de uma pesquisa científica1 que nos permitiu indagar como tais fenômenos se apresentam dinamicamente no contexto escolar. Concluímos que a vulnerabilidade se apresenta na escola como atualizações do desamparo, matizadas pelas condições ambientais e pelo desejo do sujeito, o qual busca modos de enfrentamento do paradoxo entre alienação e desalienação.
Efficiency of organomineral fertilizer and doses of Azospirillum brasilense on the morphophysiological quality of Mezilaurus itauba seedlings
Authors: Smiderle O. J. , Souza A. G. , Lima-Primo H. E. , Fagundes P. R. O.
Published: May 2024

Abstract The present study was conducted to determine the efficiency of organomineral fertilizer from cupuaçu residues (ORFCup) and dose of maximum technical efficiency of Azospirillum brasilense on the initial growth and morphophysiological quality of Mezilaurus itauba seedlings in the northern Amazon. The variables evaluated were: shoot height (H, cm), stem diameter (SD, mm), shoot dry mass (SDM, g plant-1), root dry mass (RDM, g plant-1) total dry mass (TDM, g plant-1), Dickson quality index (DQI), net assimilation rate (NAR, g m-2 day-1), leaf relative growth rate (RGR, g m-2 day-1), leaf area ratio (LAR, m2 g-1), leaf relative growth rate (RGR, g m-2 day-1), leaf area ratio (LAR, m2 g-1), specific leaf area (SLA, cm2 g-1), and leaf mass ratio (LMR, g g-1). Organomineral fertilizer from cupuaçu residues promotes better quality and robustness in M. itauba seedlings at the dose of maximum technical efficiency of 0.45 mL. L-1 of A. brasilense.
Case report: persistent double dorsal aorta
Authors: Togni Filho Paulo Henrique Alves , Oliveira Ernani Alves de , Mora Eduardo Milani , Moreira Paulo Eduardo Borher , Coghi Bruno Previdelli , Paro Guilherme Augusto
Published: May 2024

Abstract Persistent double dorsal aorta is an extremely rare congenital anomaly, with only 13 cases published to date. The objective of this study is to present this embryological variant as observed in the abdominal aorta of a patient. The anatomical description was written up on the basis of a review of electronic medical records and imaging exams. The patient in this case was an elderly 79-year-old man who presented at emergency with pain at rest in the left lower limb. He was admitted and laboratory tests and imaging exams were ordered. The variation was an imaging finding observed on angiotomography, consisting of complete separation of the abdominal aorta into two portions - a ventral and a dorsal, with different calibers – at the level of the third lumbar vertebra. There was also an anomalous origin of the inferior mesenteric artery.
A vítima de Quetzalcóatl. Consciência do gênero, resistência masculina e atitude analítica diante da violência
Authors: Martínez-Moreno Marco Julián
Published: May 2024

Resumo Argumento que uma atitude política dos operadores de uma configuração transnacional de práticas discursivas sobre a violência e o pressuposto de uma dimensão psicológica como lócus de criação da consciência do gênero produzem um “efeito de teoria”: a identificação de homens que resistem em largar suas prerrogativas patriarcais. Tais enquadramentos legitimam o propósito de responsabilização de atos de violência contra a mulher, e implicam processos de conversão para provocar o reconhecimento da relação entre estrutura e ação que precede uma nova masculinidade. O propósito desencantador destas práticas colide com as relações vivas e a temporalidade que inspira a força de pais de família, protagonistas das brigas conjugais. Defendo que uma atitude analítica diante de práticas desprezíveis, à luz dos direitos humanos, desvela estruturas afetivas que ampliam o horizonte de compreensão da violência e brindam elementos para o julgamento acadêmico da resistência à adesão ao projeto feminista.
Os Argonautas como um clássico da Sociologia: Malinowski e a história recente da Nova Sociologia Econômica
Authors: Wilkis Ariel
Published: May 2024

Resumo Este ensaio foi apresentado em homenagem a Bronislaw Malinowski, cem anos após a publicação de Os Argonautas do Pacífico Ocidental, organizado pelo Departamento de Antropologia Social da London School of Economics. Seu objetivo é refletir sobre as trocas entre a sociologia e a antropologia econômica em diferentes contextos acadêmicos e como essas dinâmicas geram distintas condições para que o campo da "nova" sociologia econômica reconheça Os Argonautas como um clássico. Diferentemente das academias centrais, a interpretação que se apresenta ilumina as condições favoráveis ocorridas no Cone Sul - particularmente a partir da influência da antropologia do Brasil e, principalmente, do papel do Núcleo de Estudos em Cultura e Economia do Museu Nacional - para gerar esse reconhecimento.
Magnetic superconductivity
Authors: Möckli David , Azambuja Murilo Kessler de
Published: May 2024

This paper serves as a primer on superconductivity, inviting students for further investigation. Although the theory of superconductivity is a many-body quantum theory, here we take a more didactic route based on thermodynamics and symmetry. We briefly survey the more than a century-old field and provide a one-sentence definition of a superconductor. Surprisingly, many textbooks lack such a definition, usually introducing superconductors through their properties rather than by definition. We explain the concept of an order parameter, symmetry, and symmetry breaking. Based on this, we clarify the difference between conventional and unconventional superconductors, which is frequently a confusing topic for newcomers. We provide the reader with a taste of a current research topic in the field of unconventional superconductivity and magnetism. For this, we explain the concept of time-reversal symmetry breaking in condensed matter physics, which is usually associated with a form of magnetism. Here, we show that time-reversal symmetry might be broken in superconductors, leading to magnetic properties due to superconductivity itself. For this purpose, we utilize the method of the Ginzburg-Landau theory for phase transitions. We discuss the field of chiral superconductivity and guide the interested reader to further study.
A economia constitucional de James M. Buchanan: a tranmissão de ideias da economia política clássica e da filosofia do contrato social por meio da tradição italiana de finanças públicas
Authors: Mourão Gustavo Nunes , Angeli Eduardo
Published: May 2024

Resumo O objetivo do presente artigo é contribuir com o estudo a respeito da trajetória intelectual de James M. Buchanan. O artigo argumenta que a tradição italiana de finanças públicas foi um importante canal de transmissão das ideias da economia política clássica e da filosofia do contrato social para Buchanan, temas que ele considera essenciais para a formação da economia constitucional. Isso é relevante para a melhor compreensão da trajetória de Buchanan na medida em que a importância da tradição italiana para a formação da economia constitucional é frequentemente subestimada pela literatura.
High-power laser in the treatment of gingival pigmentation: an integrative review of the literature
Authors: Lima Johanna Vieira Costa , Rodrigues Maria Helena Coelho , Pereira Carla Kuroki Kawamoto , Pereira Sérgio Luís da Silva
Published: May 2024

ABSTRACT Objective: To perform an integrative literature review about effectiveness of high-power laser in the treatment of gingival melanin pigmentation. Methods: This research consists of an integrative review conducted from September 2021 to May 2022 seeking to answer the following question: “What is the clinical effectiveness of laser in the treatment of gingival melanin pigmentation?”. The articles were analyzed by two researchers and the information about these was collected with emphasis on the following data: authors, year of publication, study objectives, methodology, results and conclusion. Results: Of the 16 articles initially selected, 08 were excluded (3 literature reviews, 4 internship reports and 1 monography). Thus, 8 articles were selected. Conclusion: Among several types of lasers and techniques for its use, laser, especially diode laser, was the most used technique and presented better aesthetic results, less pain, faster healing, preference and patient satisfaction after treatment. More good quality randomized control trials are needed in different techniques currently used to generate conclusions with high scientific evidence.
TRÊS POÉTICAS, VIAJAR FORMATIVO, PAISAGENS-MUNDO: BAUDELAIRE, NIETZSCHE, MONTAIGNE E A FORMAÇÃO HUMANA
Authors: Moura Rosana Silva de , Mannes Israel
Published: May 2024

RESUMO O ensaio pretende revelar vestígios de três poéticas que nos oferecem pistas para pensar um sentido formativo para o termo viagem. Inicialmente, elaboramos o tema com dois pensadores modernos: Charles Baudelaire e Friedrich Nietzsche. Em seguida, buscamos as raízes do tema no presságio moderno do pensamento renascentista de Michel de Montaigne, traçando pontos de conectividade entre as linhas de pensamento dos autores. Encontramos deslocamentos nos significados do termo viagem e na consolidação do sentido de mundo, com os quais abrimos uma perspectiva de formação humana sinalizada por meio da plasticidade estética das três poéticas.
OS ALGORITMOS E A ERRÂNCIA: NOTAS PARA ENSINAR EM UM MUNDO DIGITAL
Authors: Coppi Luiz Antonio Callegari
Published: May 2024

RESUMO Este ensaio propõe uma reflexão sobre o ensinar e o aprender em meio a um mundo condicionado pelo ecossistema digital algoritmizado contemporâneo. Isso não significa a apresentação de uma metodologia bem-acabada e eficaz contra os efeitos dos algoritmos, mas o esboço de uma ou outra atitude pedagógica que nos parece capaz de, da perspectiva da relação educador-educando, oferecer aos estudantes uma experiência diversa daquela vivida nas plataformas digitais. Para tanto, organizamo-nos em três momentos. No primeiro, sugerimos certa imagem do aprender que se volta à saída de si, à errância, ao abandono de certezas demasiado fixas sobre o mundo e sobre o próprio indivíduo. No segundo, são o funcionamento dos algoritmos digitais e os seus efeitos na subjetividade que entram em cena. Por fim, recorremos à narração de uma experiência particular e à construção de sentidos com base nessa experiência para dar a ver uma disposição pedagógica que, em nosso entendimento, faz frente à lógica das redes.
Stunning of Nile tilapia by thermonarcosis and its effect on frozen fillets
Authors: Duarte Rafael Severino , Santos João Rodrigo Gil de los
Published: May 2024

Abstract The objective of this work was to evaluate thermonarcosis as a stunning method for Nile tilapia (Oreochromis niloticus) and its effect on the pH and total volatile basic nitrogen in the frozen fillets. For evaluation, 60 animals were divided into six temperature ranges: 0‒1ºC, 1‒2ºC, 2‒3ºC, 3‒4ºC, 4‒5ºC, and 5‒6ºC. A stunning tank with a mixture of water and ice (1:1) was used. The temperature was monitored constantly, and ice was added as needed to maintain the different temperature ranges. The fish subjected to 0‒3ºC were desensitized more quickly, in 270.3 s. There was no change in the characteristics of the fillets regarding the values of pH (6.86 to 7.00) and total volatile nitrogen bases (6.36 to 8.61 mg 100 g-1 N), both in accordance with the stipulated by the current Brazilian legislation. As a stunning method, thermonarcosis is efficient at a temperature from 0-3ºC and does not affect the quality of the frozen fillets of Nile tilapia.
Expression and Significance of the Long Non-Coding RNA APTR in the Occurrence and Development of Lung Adenocarcinoma
Authors: Zhao Qi , Xiong Shi , Cai Hourong , He Xiaofeng , Shi Xiaoming
Published: May 2024

As one of the three major malignant tumors, lung adenocarcinoma (LUAD), with its rapid progression and high mortality rate, has become the most dangerous factor endangering human health. This study aims to explore new potential molecular targets, explore the regulatory role of lncRNA APTR in LUAD, and provide a more theoretical basis for the selection of LUAD therapeutic targets. The expression of APTR in LUAD was detected by PCR experiments, and the relationship between APTR and patients' clinical conditions and prognosis was analyzed by chi-square test, multifactor Cox regression, and Kaplan-Meier. The interaction between APTR and miR-298 and the regulation of LUAD cellular activities by APTR/miR-298 were explored by the luciferase reporter gene system. APTR expression was found to be upregulated in LUAD tissues and cells, and the expression of APTR was revealed to be substantially linked with lymph node metastases and TNM stage. High expression of LUAD also predicted a poor prognosis for patients. Downregulation of APTR expression significantly inhibited the activities of LUAD cells. In addition, APTR targeted miR-298 and negatively regulated miR-298 expression. The inhibitory effect of APTR knockdown on LUAD cell activity was also reversed after transfection with miR-298 inhibitor. Increasing expression of APTR is associated with patients' poor prognosis, APTR targets miR-298 and promotes LUAD cellular activity through negative regulation of miR-298.