bluuebunny/crossref_metadata_2025 huggingface dataset:
From Complex Dynamics to Foundational Physics (Part 1)
Authors:   Global Institute for Research, Education and Scholarship (GIRES), Goldfain Ervin
Published: October 2024

As of today, Quantum Field Theory (QFT) and General Relativity (GR) are broadly recognized paradigms of foundational physics. There are, however, growing suspicions that both paradigms fail to hold somewhere above the Standard Model (SM) scale and in the realm of primordial cosmology. Evidence collected on multiple fronts indicates that emergence and complexity are universal features of far-from-equilibrium systems with many degrees of freedom. In line with these findings, Part 1 of the report explores the complex dynamics of evolving dimensional fluctuations beyond the SM scale. Part 2 outlines the role of complex dynamics in the nonintegrable sector of particle physics, Dark Matter condensation and the gravitational regime of the early Universe.
Determination of Velocities of Thread Axis Points When Interacting with a Direct Large Curvature Taking into Account the Deformation in the Contact Zone
Authors:   Kyiv National University of Technologies and Desing, Ukraine, Shcherban’ Volodymyr’ , Kolisko Oksana , Melnyk Gennadiy , Goldberg Marijna , Kirichenko Anton , Kalashnyk Valerij
Published: October 2024

The theoretical study of the process of the movement of the thread, which is deformed in the contact zone with the guide, from the point of view of determining the speed, is of great importance for solving a number of specific applied problems. When determining the speed, it was assumed that the start of the Lagrangian and Euler coordinates coincided. Taking into account that the crumpling of the thread in the contact zone occurs at forces much lower than the forces required to stretch the thread, the thread was considered as non-extensible. To determine the law of the distribution of the speed of the points of the thread, an independent vector, which is always connected to the main triangle, was introduced into consideration. The relationship between the vector of total curvature and the vector of absolute angular velocity is obtained. The obtained values of the speed at an arbitrary point of the axis of the thread as a function of the deformation vector, which determines the degree of twisting of the thread in the contact zone. The obtained results can be used to study various technological processes in the sewing, knitting, and textile industries, where the movement of the thread takes place along the guide surface of great curvature.
Influence of the Deformation of the Thread Section in the Direct Contact Zone on the Value of Acceleration of the Central Axis Points
Authors:   Department of Computer Science, Kyiv National University of Technologies and Desing, Ukraine, Shcherban’ Volodymyr
Published: October 2024

Determined projections of the acceleration vector in relation to the arc length coordinate of the thread axis through components that define the degree of thread compression in the contact zone. Solving the challenges faced by the textile and light industries in increasing the production of fabrics and knitted goods based on improving the productivity of existing equipment and employing modern technologies, grounded in the latest scientific achievements, has significant economic and technical importance. The number of breakages can be significantly reduced by using high-quality raw materials and optimizing the conditions of thread processing on technological equipment, where interaction with guiding and working elements of large and small curvature occurs. Theoretical foundations for the accelerations of points on the thread axis, considering compression during its movement along a guide of large curvature, have been developed.
Determination of Load Forces on the Upper Part of Orthopedic and Postoperative Shoes
Authors:   Kyiv National University of Technologies and Dosing, Ukraine, Shcherban’ Volodymyr , Ponomarenko Tatyana ,   Department of Light Industry Technologies, Kyiv college of light industry, Ukraine, Melnyk Gennadiy ,   Kyiv National University of Technologies and Desing, Ukraine, Shcherban’ Yury ,   Higher state educational establishment Kyiv college of light industry, Ukraine
Published: October 2024

Determined patterns of force load on the sole and upper of orthopedic and postoperative shoes when bending the foot while walking. To determine the force of the load on the top of the postoperative orthopedic shoes, the frictional forces between the lateral surfaces of the shoes and the outer lateral sides of the foot can be neglected. Thus, the task will be reduced to the compilation of equilibrium equations of a plane system of forces. As can be seen from the load diagram of the top of the shoe, we have a flat arbitrarily located system of forces. To determine the unknown forces, it is necessary to compile a system of two equilibrium equations, which will represent the algebraic sums of the projections of all forces on the horizontal and vertical axes. To automate the design process of orthopedic and postoperative shoes, a computer program was developed that allows you to perform calculations of the corresponding forces and tension depending on the design and types of material of individual elements, as well as obtain regression equations for determining the effect of tension on the magnitude of the detachment force.
The Mediating Role of Islamic Work Ethics in the Effect of Psychological Capital on Organizational Citizenship Behavior
Authors: Zarnegarian Yousef
Published: October 2024

INTRODUCTION: Organizational issues have been centered on psychological and behavioral problems of the employment staff for the last couple of decades. Psychological capital affects the individual as well as the organizational level to a great extent. Higher psychological capital amongst employees is more likely to bring improvement in motivation, engagement, and performance thereof. The present study was undertaken with the purpose of investigating the mediating effect of Islamic work ethics on the influence of psychological capital on organizational citizenship behavior.

MATERIAL AND METHODS: The method of data collection is library and field methodologies. Based on the type, nature of data is descriptive. All the educational specialists at Yasuj University are considered the population of the research. Thus, it has a sample size of 102. According to Cochran's formula, 81 samples were selected. Standard questionnaires on organizational citizenship behavior, Islamic work ethics, and psychological capital are used for data collection. Data interpretation utilized the SMART-PLS software and the Partial Least Squares analysis method.

RESULTS: The direct paths of psychological capital effecting Islamic work ethics, psychological capital on organizational citizenship behavior, and Islamic work ethics on organizational citizenship behavior were statistically significant and positive at p < 0.01. Moreover, the mediation role of Islamic work ethics between psychological capital and organizational citizenship behavior was confirmed at p < 0.01.

CONCLUSION: In this study, it can be seen from the analysis that psychological capital has a significant effect on perceived organizational citizenship behavior with Islamic work ethics as a variable that mediates.
Floristic diversity of Sehary Guebli forest (Djelfa, Algeria)
Authors:   University of Batna, Rahmoune Abdelkarim , Beghami Yassine ,   University of Batna, Hadjadj Kouider ,   University Center of Naâma
Published: October 2024

This research focuses on the characterization of the floristic diversity of the Sehary Guebli forest. 60 phytoecological surveys were installed between 2016 and 2019. The identified species were characterized by their biological and geographical type. Among the species inventoried we have defined those rare, endemic and protected. In total, we have identified 125 species belonging to 96 genera and 34 botanical families. The biogeographic spectrum is marked by the dominance of the Mediterranean element with 83 taxa and the biological types reflects the dominance of therophytes (45.60%). The results obtained show the presence of 23 rare species, 61 very rare species, 14 endemic species and 4 protected species.
Lagochilascaris minor (Nematoda, Ascarididae) em gato de vivência comunitária em praça pública na cidade de Porto Alegre, sul do Brasil - relato de caso
Authors:   Universidade Federal do Rio Grande do Sul, Tonin Rafael Gustavo , Marques Sandra Márcia Tietz ,   Universidade Federal do Rio Grande do Sul
Published: October 2024

Lagochilascaris minor (Family Ascarididae) is a zoonotic and chronic parasite. The definitive hosts are domestic and wild felines, human and dogs, and the intermediate hosts are rodents. The lesions appear in the formo f a pseudocysts, nodule or abscess and when fistulated, they drain serosupurulent material containing eggs, larvae and adult helminths. The present report describes the diagnosis of this parasitosis in a castrated adult cat, living in a community in a public square for Five years, with progressive weight loss and skin lesions. The fecal parasitological examination (FPE) detected L. minor eggs. The epidemiology and treatment of this neglected parasitic disease are discussed.
Food crop marketing in Liberia
Authors:   , Fendor Ernest Y.
Published: October 2024

The marketing problem with respect to agricultural crops in Liberia stems from Government's unsuccessful attempt to control agricultural prices, especially of rice which is the staple crop, and from seasonal movements in the prices and quantities of other crops in the economy. This study analyzes the problem within the context of the dual (i.e. monetary and non-monetary) marketing system which exists in the country. The structure of the agricultural sector is characterized by (a) foreign concessions; (b) Liberian-owned commercial farms; and (c) small traditional farms that comprise over 80 percent of the country's agricultural holdings. Development planning for agriculture is aimed at increased export production and self-sufficiency in rice production. The self-sufficiency program in agriculture emphasizes the development of tree crops, i.e. cocoa, coffee, rubber, oil palm, etc., for export and rice for domestic consumption. The main objective of this study is to determine the existence of a functional and efficient marketing system which serves the food delivery needs of the economy. As a guide to achieving this objective, it was hypothesized that all wholesale commodity markets within the country are integrated such that price series in selected pairs of markets were positively correlated for food crops over a twenty-four-month period, (1982-84). The hypothesis was tested by means of correlation analysis. Quantitative and qualitative methodologies were used to arrive at the general conclusion that indeed, there exists an efficient and coherent marketing system for food crops in the country, specifically for cassava, plantain, pepper and eggplant. The purpose for the study is to suggest by examples and illustrations, some improved ways of studying the food marketing issues with which Government officials and analysts are frequently faced. Hopefully, by adopting these improved methods, policymakers can reduce risks in decision making.
Electrodynamic field effects in heterogeneous catalysis : ammonia synthesis
Authors:   , Wei Yu Wen
Published: October 2024

The synthesis of ammonia from nitrogen and hydrogen was studied on a multi-promoted iron catalyst in a packed bed reactor under the influence of electrodynamic field. Two different experimental conditions were studied. In the first series of experimental runs, the reaction was carried out under constant temperature at 350 [degrees] C, while the electrodynamic field conditions were varied. In the second series of runs, the electrodynamic field condition was held constant at a terminal potential difference of 700 volts, the reaction temperatures were varied. Enhancement of the catalytic activity due to the electrodynamic field effect has been observed. The rate of ammonia synthesis under constant temperature has been found to be a function of the dynamic field intensity as well as its frequency. At a terminal potential difference of 1,000 volts between the electrodes (the field intensity is between 196 and 5,900 volts per centimeter), a frequency of 600 cycles per second, and a reaction temperature of 350 [degrees] C, the rate increase is 16^ higher than that of the neutral catalyst under otherwise Identical experimental conditions.
The effect of hypnotic suggestion on visual evoked potentials
Authors:   , Nolen Frederick Wallace
Published: October 2024

Three groups of four females and one male chosen according to different levels of hypnotic susceptibility viewed a flashing light stimulus following an hypnotic induction. All Ss viewed the stimuli passively or following hypnotic suggestion of increased or decreased stimulus intensity. Ss of High and Medium susceptibility showed significantly larger VEP amplitudes during passive observation of the stimuli than the Low susceptibility Ss. The High and Medium Ss differed in the direction of VEP amplitude change following hypnotic suggestions of stimulus intensity change. The implications of the present findings on past research and on the nature of hypnosis are discussed.
Structural and dimensional force system synthesis for one degree-of-freedom planar linkages by using interactive computer graphics
Authors:   , Pourmand Bijan
Published: October 2024

"INTRODUCTION TO FORSS: In most cases a linkage is designed to meet kinematic input-output motion criteria which is then followed by synthesis to satisfy dynamic objectives. Force System Synthesis (FORSS) is the process of synthesizing a system of force elements acting on a mechanism to drive it with desired dynamic motion time response and also create desired input-output forces. As it is presented in Carson and Muenks' paper [IP force system synthesis can be used to satisfy other related objectives depending on the particular problem, such as : l)to reduce the required size of driving force devices, 2)to reduce energy consumption, 3)control maximum bearing forces, 4) reduce inertia shaking forces and moments, and 5)reduce impact force or noise."--Page 1.
Amniotic Fluid as a Potential Source of Extracellular Vesicles With Anti-inflammatory and Regenerative Properties
Authors:   School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran., Hassanpour Kamyab , Norooznezhad Amir Hossein ,   Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Published: October 2024

Cell therapy, especially with mesenchymal stem cells (MSCs), is a potent treatment for many diseases or disorders. Meanwhile, MSCs-based cell-free products, such as extracellular vesicles (EVs) have been suggested as an alternative to MSCs. These MSC-EVs have been used in different trials to treat various inflammatory-dependent disorders. MSCs, according to their isolated tissue source, could present different therapeutic features and their derived EVs. One of the new sources for MSC isolation is amniotic fluid (AF). In addition, other than MSCs, new studies have used AF as an acceptable source for EV isolation. These isolated EVs from AF (AF-EVs) or AF-derived MSCs EVs (AF-MSC-EVs) have been used in different in-vitro and animal studies to treat a wide variety of inflammatory-dependent pathological conditions due to their confirmed anti-inflammatory potentials (through suppressing different pro-inflammatory cytokines). Meanwhile, in other conditions requiring repairing properties (e.g. wound healing or myocardial infarction), considering their regenerative and angiogenic potentials, these EVs have shown proper therapeutic results. Furthermore, other than the in-vitro and animal studies, AF-EVs containing treatment have successfully been used in some clinical trials and showed no adverse events among the patients and expressed potent anti-inflammatory properties through suppression of two very important pro-inflammatory cytokines, namely interleukin 6 and tumor necrosis factor α. Accordingly, AF-EVs and AF-MSC-EVs could be suitable choices for treatment due to their anti-inflammatory and regenerative properties. However, further clinical studies are needed.
Prekäre Professionalität in den Hilfen zur Erziehung
Authors: Meyer Nikolaus , Alsago Elke
Published: October 2024

In diesem Beitrag skizzieren die Autor*innen, dass sich die Beschäftigten in der Sozialen Arbeit am Ende der Coronapandemie stark belastet fühlten. Deutlich wird vor dem Hintergrund einer Fachkräftebefragung, dass eine große Differenz zwischen professionellem Anspruch und fachlichen Handlungsmöglichkeiten auf der einen und den veränderten Bedingungen und Restriktionen auf der anderen Seite besteht.
Skill-mix, Rationierung und Qualität in der Pflege: Forschungsstand international und Situation in Deutschland mit Schwerpunkt Onkologie
Authors: Maier Claudia , Köppen Julia , Naegele Matthias , Strohbücker Barbara
Published: October 2024

Vor dem Hintergrund des Pflegefachkräftemangels und mit der Zunahme der Pflegestudiengänge in Deutschland stellt sich die Frage, wie ein optimaler skill-mix aussehen kann. Das Thema wurde jedoch bisher kaum in Deutschland diskutiert, weder für Pflegeteams noch an der Schnittstelle Pflege und Medizin. Die internationale Forschung zeigt, dass Teams mit einem höheren Qualifikationsniveau (bspw. Anteil Bachelorabschluss vs. Pflegefachpersonen vs. Hilfskräfte) mit verbesserten Patientenoutcomes assoziiert sind. Die Studienlage zu einem vermehrten Einstellen von Hilfskräften ist bisher unzureichend, dies betrifft auch die Frage, inwieweit das Auftreten rationierter Tätigkeiten durch Veränderungen im skill-mix beeinflusst wird. Individuelle Faktoren, wie die Arbeitserfahrung, könnten einen Einfluss haben, wurden bisher jedoch wenig beforscht. In Deutschland geben Pflegefachpersonen mit Weiterbildung und Hochschulabschluss an, dass sie weitestgehend dieselben Aufgaben in der Pflege übernehmen wie Pflegefachpersonen ohne Weiterbildung. Dies deutet darauf hin, dass der skill-mix nicht optimal innerhalb von Teams aufgeteilt ist. International hat sich der skill-mix und die interprofessionelle Zusammenarbeit (Pflege und Medizin) in den letzten Jahren erheblich verändert, bspw. durch Pflegeexperten APN (Advanced Practice Nurses) und spezialisierte Pflegefachpersonen, die in der Onkologie Medikamente verschreiben. In Deutschland findet auch, wenngleich an einzelnen Kliniken, eine Aufgabenneuverteilung statt, wie bspw. die Zytostatika-Applikation durch Pflegefachpersonen mit Weiterbildung in einem Delegationsmodell. Eine effektive Umsetzung dieser komplexen Veränderungen in Teams sollte durch klar definierte Rahmenbedingungen, Tätigkeitsprofile, standardisierte Weiterbildung und mit einem unmittelbaren Nutzen für die Patientinnen und Patienten verbunden sein.
Das Intensivtagebuch
Authors: Ellrichmann Victoria Sophie
Published: October 2024

Junge Pflegewissenschaft
Katastrophenmanagement und soziale Dienste
Authors: Gall Melanie
Published: October 2024

Naturkatastrophen treten in den USA häufig auf: zu nennen sind im Jahr 2023 unter anderem ein Feuersturm auf Maui, ein Typhoon auf Guam, Rekordhagel in Minnesota, eine Dürre- und Hitzewelle im Süden der USA und Sturzfluten in Fort Lauderdale. Der Wiederaufbau nach solchen Katastrophen vollzieht sich dabei meist schleppend und viele Menschen, die von Sozialleistungen abhängig sind, finden nur schwer oder gar nicht in ihre Ausgangslage vor der Katastrophe zurück. Der Beitrag gibt einen Einblick in diese Ungleichheiten und in das Bevölkerungsschutzsystem in den USA.
1844 – 1924 – 2024. 180 Jahre Sozialpädagogik oder wie die Sozialpädagogik eine Theorie der Kinder- und Jugendhilfe wurde und weshalb dies auch so bleiben soll (= Nachtrag III)
Authors: Henseler Joachim
Published: October 2024

Beiträge
Plano de Desenvolvimento da Radioterapia para a próxima década (RT-2030) Resenha
Authors: Barros Liana de Oliveira , Silva Marcelo Gurgel Carlos da
Published: October 2024

O documento "RT-2030", elaborado pela Sociedade Brasileira de Radioterapia, delineia um plano estratégico para o desenvolvimento da radioterapia no Brasil ao longo da próxima década. Esta resenha oferece uma análise crítica das principais diretrizes e metas propostas pelo plano, abordando tópicos de importância para o setor, bem como seus impactos esperados na prática clínica, na inovação tecnológica e na formação profissional na área, além de discutir a viabilidade e os desafios associados à execução das estratégias delineadas no plano, oferecendo uma visão crítica sobre as suas implicações para o avanço da radioterapia no Brasil.
Рецензія на монографію "Цифрова трансформація організаційної культури підприємств"
Authors: Пушак Я. Я.
Published: October 2024

Рецензія на монографію "Цифрова трансформація організаційної культури підприємств" (автори: Ю. С. Ремига, к.е.н., доцент, директор Навчально-наукового інституту "Європейська школа бізнесу", професор кафедри менеджменту, фінансів та бізнес-адміністрування ПЗВО "Міжнародний європейський університет" (м. Київ); Н. В. Приймак, к.е.н., завідувач кафедри менеджменту, фінансів та бізнес-адміністрування ПЗВО "Міжнародний європейський університет" (м. Київ); Н. В. Трушкіна, к.е.н., старший дослідник, старший науковий співробітник сектору промислової політики та інноваційного розвитку відділу промислової політики та енергетичної безпеки Науково-дослідного центру індустріальних проблем розвитку НАН України (м. Харків); Н. С. Ринкевич, к.е.н.)
Efeito do treino com um software sobre o comportamento de identificar comportamentos verbais do psicoterapeuta
Authors:   Universidade Federal de São João del-Rei, Chagas Diogo Antônio Bloes , Bessa Fernanda Borges ,   Universidade Federal de São João del-Rei
Published: October 2024

Muitos autores têm focado o comportamento do psicoterapeuta como variável crítica para obter a melhora do cliente. Quais habilidades são fundamentais ao psicoterapeuta e como ensiná-las são de especial interesse para supervisores clínicos. Zamignani (2007) desenvolveu um sistema de categorização e um treino sistemático para observadores (software), a fim de ensinar a categorizar comportamentos do psicoterapeuta e do cliente. Entretanto, ainda não foi verificado se esse treino favorece desempenhos discriminados em alunos sem experiência clínica. O objetivo deste trabalho foi verificar se o treino sistemático para observadores pode ser uma ferramenta útil para treinar alunos sem experiência clínica a identificar categorias de comportamentos do psicoterapeuta. Onze alunos foram submetidos ao treino. Na linha de base, os alunos categorizaram os comportamentos do terapeuta em uma sessão transcrita e, posteriormente, fizeram o treino sistemático com o software. Na fase de teste os alunos categorizaram os comportamentos do terapeuta em duas sessões transcritas. O treino foi eficiente somente para as categorias de comportamento de “Facilitação” e “Empatia”, sendo que, dos 11 alunos, dez e nove, respectivamente, melhoram o desempenho de identificar as categorias. Para as categorias “Informação”, “Interpretação”, “Solicitação de Relato”, “Solicitação de Reflexão”, “Recomendação”, “Aprovação” e “Reprovação” o treino com o software não foi eficiente. Isso sugere que pesquisas são necessárias para testar, sob diversas condições, o treino sistemático para observadores.
Efeitos da programação e suspensão de metacontingências sobre operantes e culturantes
Authors:   Universidade de Rio Verde, Baia Fábio Henrique , Lemes Isabella Guimarães ,   Universidade de Rio Verde, Biano Alina Barboza Cabral ,   Universidade de Rio Verde, Pereira Raiene Sara Cardoso ,   Universidade de Rio Verde, de Sousa Lesley Diana ,   Universidade de Rio Verde
Published: October 2024

Este estudo investigou os efeitos da programação e suspensão de metacontingências sobre operantes e culturantes. Participaram 12 universitários distribuídos em quatro tríades. Duas tríades foram expostas a um procedimento em que a mudança entre condições foi sinalizada por diferentes cores do fundo de tela. Outras duas tríades foram expostas a um procedimento em que não havia sinalização. A tarefa experimental utilizada foi a inserção de números. Todas as tríades foram expostas ao delineamento ABAB. Durante a condição A apenas contingências operantes estavam em vigor. Na condição B, contingências operantes e metacontingências estiveram em vigor. Os resultados demonstram que operantes ocorreram em mais de 90% das tentativas em todas as condições. Já os culturantes ocorreram em menos de 35% das tentativas durante a condição A. Na condição B os culturantes ocorreram em mais de 90% das tentativas. O retorno à condição A e a reexposição à condição B replicaram os resultados encontrados na primeira exposição de cada condição. A ausência de sinalização não produziu efeitos diferenciais em operantes e culturantes. Conclui-se que houve seleção de operantes e culturantes. São discutidos possíveis efeitos do critério de estabilidade utilizado.
OTRA VEZ EL DAÑO: CRITERIOS DE DETERMINACIÓN DEL DAÑO EN CHILE Y SU ENTENDIMIENTO EN LA JURISPRUDENCIA
Authors: Fuentes López Constanza Isabel
Published: October 2024

Resulta indiscutido que el daño es el elemento central de la responsabilidad civil. Así, este artículo muestra la forma en que la legislación ha optado por no definirlo mientras que la doctrina chilena ha pasado por alto su problematización, prefiriendo abordar su ámbito práctico, clasificándolo, caracterizándolo y luego reflexionando en torno a sus formas de cuantificarlo en dinero. Pero desde la óptica de la filosofía del derecho y la justicia correctiva, resulta relevante evidenciar esta paradoja de que el principal elemento de la responsabilidad civil sea infraproblematizado y, por su parte, dotarlo de más contenido gracias a las teorías comparativistas o no comparativistas abordadas por la doctrina comparada, para con ello examinar la necesidad de un concepto unívoco del daño, ante el surgimiento de nuevos tipos. Finalmente, se intentará ilustrar cómo estas herramientas podrían mejorar la práctica tanto de litigantes como el propio razonamiento judicial al incluir mayor claridad a su motivación.
Abordaje diagnóstico en un adulto mayor con neuroinfección de etiología micótica, presentación de un caso
Authors: Quezada Lara Cristina , Zaragoza Carrasco Cristhian Geovanni , Luna Martínez Omar Elías
Published: October 2024

Antecedentes: La meningitis infecciosa de etiología micótica reporta alto índice de morbimortalidad; presenta semejanza clínica con el evento cerebrovascular agudo o epilepsia. Esta dificultad de diagnóstico incrementa en el adulto mayor, donde las características clínicas clásicas como el meningismo, cuya manifestación es fiebre, rigidez de nuca, fotofobia y cefalea, son difíciles de encontrar o clasificar. Objetivo: Mostrar el abordaje diagnóstico de un adulto mayor con neuroinfección de etiología micótica. Métodos: El historial médico del paciente sugirió la toma de punción lumbar, cultivos, tinta china, tinción Gram, examen de antígeno y laboratorios específicos. La bibliografía sugiere un tratamiento en tres fases; la paciente del caso falleció antes de terminar el tratamiento sugerido. Resultados: La criptococosis es la principal entre las etiologías micóticas, esta se diagnosticó en la paciente del caso, cuenta con una mortalidad a pesar de manejo intrahospitalario entre 40 a 60% en áreas de desarrollo. Conclusión: La punción lumbar, cultivo, tinta china y su análisis son el estándar de oro para diagnosticar neuroinfección de etiología micótica ante la presencia de meningitis y/o encefalitis, en este caso generada por criptococosis en un adulto mayor. Un tratamiento inicial sistematizado permite un manejo temprano, mejorando el pronóstico de los pacientes.
 
Fecha de recepción: 22/12/2022
Aceptación de originales: 01/07/2023
Blancanieves, la manzana y la anafilaxia
Authors: Pavón Romero Gandhi Fernando , Ramírez Jiménez Fernando , Cabrera Palos Daniela , Terán Luis M.
Published: October 2024

La anafilaxia se define como una reacción alérgica sistémica de aparición aguda y potencialmente fatal, posterior a la exposición de sustancias como el veneno de insectos, medicamentos y alimentos. El siguiente articulo nos describe la importancia del reconocimiento de los pacientes alérgicos, los factores de riesgo como la alergia alimentaria y su predisposición para presentar anafilaxia, desde la perspectiva de un cuento de hadas como el de Blancanieves.
 
Fecha de recepción: 23/02/20224
Aceptación de originales: 01/07/2024
Assessment of routine pre-operative group and save testing in patients undergoing cholecystectomy: a retrospective cohort study
Authors: O'Leary Lawrence , Sherwood William B , Fadel Michael G , Barkeji Musa
Published: October 2024

Background Routine group and save (G&S) testing is frequently performed prior to cholecystectomy, despite growing evidence that a targeted approach is safe and avoids unnecessary investigations. This retrospective cohort study explored frequency of testing in our unit, rates of peri-operative blood transfusion and pre-operative risk factors for requiring transfusion. Methods Health records of 453 consecutive adults who underwent cholecystectomy in a UK NHS trust were reviewed for blood transfusion up to 30 days post-operatively. We compared the need for transfusion against patient demographics, indication and urgency of surgery, and the number of prior emergency hospital attendances with gallstone complications. Logistic regression determined whether prior attendances with complications of gallstones independently predicted the need for transfusion. Results Peri-operative blood transfusions within 30 days of operation occurred in 1.1% of cases, with no requirement for uncrossmatched blood. Patients who received a blood transfusion tended to have higher American Society of Anesthesiologists (ASA) grades (p = 0.017), were more likely to have an underlying primary haematological malignancy (20.0% vs. 0.2%; p = 0.022) and prior emergency hospital attendances with gallstone complications (median 4 vs. 1; p < 0.001). Logistic regression showed each prior emergency attendance was associated with 4.6-fold odds of transfusion (p = 0.019). Receiver operating characteristic curve analysis showed an area under the curve of 0.92. Three or more attendances predicted need for transfusion with 60.0% sensitivity and 98.0% specificity. 74% of patients had at least one G&S sample taken pre-operatively, costing the trust approximately £3,800 per year in materials. Conclusions The findings of this study suggest that pre-operative G&S testing prior to cholecystectomy is not routinely required. Increased frequency of prior emergency hospital attendances with gallstone complications and co-morbidities associated with coagulopathies were pre-operative risk factors for post-operative blood transfusion. More selective testing could provide large financial savings for health institutions without compromising patient safety.
Распространение упругих волн в анизотропных ауксетичных материалах
Authors:   ФГБУН Институт физики прочности и материаловедения СО РАН, Томск, Россия, Кривошеина М. Н. , Туч Е. В. ,   ФГБУН Институт физики прочности и материаловедения СО РАН, Томск, Россия
Published: October 2024

Значения скоростей распространения упругих волн в изотропных и анизотропных материалах в значительной мере определяют время процесса упругопластического деформирования и разрушения твердых тел в условиях ударного нагружения. Рассмотрены особенности распространения упругих волн в элементах из анизотропных материалов-ауксетиков, характеризующихся отрицательными значениями коэффициентов Пуассона. В анизотропных материалах скорости распространения упругих волн зависят от направления, при наличии отрицательных значений коэффициентов Пуассона в сплошных твердых телах в перпендикулярных направлениях имеются значения коэффициентов Пуассона, намного превышающие предельные 0.5. Методом конечных элементов в динамической постановке моделируется ударное нагружение пластин, цилиндров компактных форм и тонких цилиндров из монокристаллического цинка о жесткую стенку в трехмерной постановке. Моделирование деформирования тел проведено с использованием конечных элементов в форме тетраэдров, традиционно используемых в задачах бронебаллистики. Показаны особенности процессов распространения упругих волн в телах от тонких цилиндров до тонких стержней при непрерывном изменении формфакторов, определяемых отношением высоты цилиндра к его диаметру. Рассмотрен вопрос влияния знака коэффициента Пуассона в анизотропном материале на коэффициенты восстановления скорости удара тела о жесткую стенку. Проведены параметрические исследования влияния абсолютной величины отрицательного значения коэффициента Пуассона на коэффициент восстановления скорости после удара о жесткую стенку. Показано отличие процессов распространения волн при изменении осей симметрии монокристалла цинка относительно осей симметрии цилиндров. Для минимизации количества характеристик, влияющих на процесс распространения продольных волн, удобно проводить исследования на анизотропных материалах, т.к. плотность не варьируется, варьируемы только модули Юнга и коэффициенты Пуассона. Показано, что скорость распространения продольной волны зависит от одной пары коэффициентов Пуассона, измеряемых в плоскости, перпендикулярной направлению распространения, а деформирование в этой плоскости определяется другой парой коэффициентов Пуассона, что важно для ауксетичных материалов.
Aplicación de la teoría sociocultural de Vygotsky y el rendimiento académico de los estudiantes de segundo bachillerato
Authors: Junco Chávez Lidia Maritza , García Arellano Kenia Elisa , Ordoñez Vivero Rosa Elena , Reigosa Lara Alejandro
Published: October 2024

Los problemas socioculturales afectan al individuo y su forma de aprender, por lo que el objetivo general de la presente investigación es aplicar la teoría sociocultural de Vygotsky, para mejorar el rendimiento académico de los estudiantes segundo año de bachillerato de la Unidad Educativa Otavalo. Se llevó a cabo una investigación cualitativa y cuantitativa, donde se implementaron estrategias pedagógicas basadas en el aprendizaje colaborativo y el uso de las Zonas de Desarrollo. Para medir los resultados se utilizó un grupo de implementación de la teoría y un grupo de control. Los estudiantes que participaron en el grupo de la implementación en actividades grupales y recibieron apoyo personalizado de sus compañeros y docentes mostraron un aumento significativo en su comprensión conceptual y habilidades de pensamiento crítico. Además, la integración de herramientas tecnológicas facilitó la mediación del aprendizaje, permitiendo a los estudiantes acceder a recursos que enriquecieron su contexto educativo. Este estudio concluye que la teoría sociocultural de Vygotsky, al enfatizar el papel del entorno social en el aprendizaje, ofrece un marco efectivo para mejorar el rendimiento académico y promover un aprendizaje más significativo en la educación secundaria.
Niveles de eficiencia de la gestión pública del patronato municipal de inclusión social de Santo Domingo
Authors: Moreira Moreira Gema , García Roldan Geovanna
Published: October 2024

El presente artículo tiene como objetivo analizar los niveles de eficiencia de la gestión pública  del Patronato Municipal de Inclusión Social de Santo Domingo, para lo cual, es imprescindible la búsqueda de información documental en publicaciones indexadas a revistas de alto impacto y seguir una metodología con enfoque mixto cuali-cuantitativo con el fin de evaluar la eficiencia de la gestión pública, empleando un diseño no experimental y exploratorio que permitió recoger datos en un único momento. La población de estudio incluye a 334.826 habitantes urbanos de Santo Domingo, cifra el Instituto Nacional de Estadísticas y Censos INEC (2024), donde el muestreo probabilístico aleatorio simple permite seleccionar a 245 usuarios del Patronato, dividido en hombres y mujeres de edades de entre 18 y 65 años. Los resultados demuestran la presencia de una percepción mixta sobre la capacidad de organización, con una notable proporción de encuestados que no se sienten suficientemente informados o comprometidos, y una significativa imagen negativa que destaca áreas clave para mejoras. Se requiere un esfuerzo continuo para fortalecer la eficiencia organizativa y la respuesta a las necesidades de los usuarios. Se concluye que los niveles de eficiencia están influenciados por factores internos como la calidad de gestión, la motivación del personal y las habilidades para cumplir procesos; así también, externamente aparecen factores como la percepción y satisfacción de los usuarios, el apoyo gubernamental, y las condiciones socioeconómicas vigentes.
Platelet Rich Plasma in the Management of Recurrent Lumbar Disc Surgery; A Study of Ten Cases
Authors: Sukriti Das  , Akhlaque Hossain Khan  , Shamit Barua  , Bibek Gaurab Singh  , Md Mahbub Hasan  , Md Motasimul Hasan
Published: October 2024

Low back pain (LBP) is a very common entity, now regarded as the first cause of disability worldwide. Intervertebral disc (IVD) degeneration leads to posterior rupture annulus fibrosus (AF) with extrusion of Central Nucleus pulposus (NP) through the injured area which has little potential to repair as it has no blood supply and causes mechanical pressure and inflammatory changes in the nerve root causing LBP. Autologous platelet rich plasma (PRP) contain concentrate blood that contain a natural concentration of autologous growth factors and cytokines and currently widely used in the clinical setting for tissue regeneration and repair. PRP had great potential to stimulate cell proliferation and metabolic activity of IVD effectively restoring structural change, improving matrix integrity, IVD regeneration, reducing discogenic back pain. Our Study of 10 cases, where repeat or re-exploration surgery (after primary PLID Surgery, fenestration and discectomy) was done, where removal of recurrent disc 5, release of epidural fibrosis and perineural scarring 4 and surgical debridement for discitis 1 was done. In addition, PRP was given in the disc space & around the nerve root which provides lots of growth factor, cytokines which helps in disc regeneration and prevent adhesion & fibrosis. These dual actions enhance symptomatic recovery of all cases. Large scale studies may be required to confirm the clinical evidence of PRP for the treatment of discogenic LBP
Bang. J Neurosurgery 2024; 13(2): 70-74
Surgical Outcome of Tumors of Spinal cord, Nerve roots, Meninges, and Vertebral column – Our Experience in Tertiary level Hospital
Authors: Soumen Samadder  , Mithun Sardar  , Kazi Hafiz Uddin  , Misbah Uddin Ahmad  , Md Motasimul Hasan  , Shamsuzzaman Mondle  , ATM Ashadullah  , Md Joynul Islam
Published: October 2024

Background: Spinal cord tumors can result in dramatic neurological and functional disabilities in the patients. We aimed to know the different types of spinal tumors and the correlation between clinical presentation and pathological findings and compare the outcomes of these tumors postoperatively. Methods: A total of 410 patients were included in the retrospective study group. The duration of the study was January 2016 to October 2022 (82 months). After a thorough clinical evaluation, patients were subjected to magnetic resonance imaging (MRI) and then surgery. They were described based on age, sex, location of the tumor, type of the tumor, symptoms, histopathological type, surgical resection, and complications. Results: The study included 229 (56%) males and 181 (44%) females and their ages ranged from 6 years to 74 years. Out of the 410 patients, 203(49.51%) had intradural extramedullary, 121(29.51%) had extradural and 86(20.98%) had intradural intramedullary spinal tumors. A predilection towards the thoracic region (39.50%) and cervical region (28.40%). Lumbar region (20.10%) and Sacral region (4.10%), Cervicodorsal region (1.40%), Dorsolumbar region (3.00%), and Craniovertebral junction (3.50%) were seen. The tumors were excised completely in 72.68% of the patients while neartotal resection was done in 17.82%, subtotal resection in 7.32%, and only biopsy in 2.2% of patients. Histopathologically most of the tumors were Schwannoma (38.78%), then Meningioma (11.71%), Ependymoma (11.70%), Astrocytoma (10.98%), and others were found. There was significant improvement (33.66%) in the modified McCormicks score at discharge follow-up. Conclusions: Intradural extramedullary is the most common spinal cord tumor. The majority of the cases presented with sensorimotor symptoms and pain is the predominant clinical complaint. Spinal cord tumors are most commonly observed in the 2nd to 4th decade of life with a gradual decline in the incidence towards the extremes of age group. Surgery is the definitive treatment and the aim of the surgery is gross total resection
Bang. J Neurosurgery 2024; 13(2): 112-120
Factors Influencing Surgical Outcome of Patients with Traumatic Acute Subdural Hematoma
Authors: Narayan Dhar  , Md Rabiul Karim  , Mohammad Humayun Rashid  , Mohammad Sanaullah  , Mahfujul Quader  , Md Motasimul Hasan  , Tapas Sarker  , Md Shahnewaz  , Abul Hasan Md Touhidur Reza  , Md Kamal Hossain  , Majed Sultan  , Asiful Islam
Published: October 2024

Background: Traumatic acute subdural hematoma (ASDH) is a catastrophic   devastating component of brain injury in neurosurgical arena. Due to its significant   mortality rate, potential for functional disability and disastrous consequence of   complications, it is considered as a challenge for neurosurgeons worldwide.   Consequently, precise recognition of predictive outcome factors is crucial for appropriate   neurosurgical management and prognostication for patients with traumatic ASDH.   Aims: The study aimed to determine the demographic, clinical, radiological and   therapeutic factors associated with the surgical outcomes in patients with traumatic   acute subdural hematoma (ASDH) who managed surgically in the Neurosurgery   Department at a tertiary level hospital in Bangladesh.   Materials and Methods: This prospective observational study included 40   radiologically diagnosed cases of traumatic ASDH age more than 18 years who were   admitted and operated in the Department of Neurosurgery of Chittagong Medical   College Hospital from May 2022 to April 2023. Data regarding demographic, clinical,   radiographic, surgical procedure and findings were recorded. Three months mortality   rate with clinical outcome was assessed by Glasgow Outcome Scale (GOS) score and   analyzed. The outcome was divided into favorable outcomes (GOS score >3) and   unfavorable outcomes (GOS score d”3).   Results: The median age of the patients was 45 years (range: 19-82 years), and   there was a male predominance (82.5%) with a male to female ratio of 4.7:1. Road   traffic accident (RTA) was the most common cause of trauma (65%), followed by fall   from height (15%), and physical assault (12.5%). Craniotomy was done in 16 (40%)   patients and other 24 (60%) patients had decompressive craniectomy. Overall, 21   (52.5%) patients had good outcome and other 19 (47.5%) had poor outcome, and three   months mortality rate was 42.5%. Regression analysis revealed that, increasing age   [Odds ratio (OR): 1.12, 95% Confidence interval CI: 1.02-1.22. p=0.014], preoperative   GCS of d”8 (OR: 13.98, 95% CI:1.22-160.00, p=0.034), and presence of Anisocoria   with non-reacting pupil (OR; 17.99, 95% CI: 1.32-244.08, p=0.030) were   independently associated with poor outcome.   Conclusions: This study identified higher age, preoperative low GCS score and   pupillary abnormality as the independent predictors for 3-months poor outcome in   patients who underwent surgical treatment for traumatic ASDH  
Bang. J Neurosurgery 2024; 13(2): 140-148
Case Report: Diagnostic Dilemma between Atypical Meningioma and Glioblastoma-our Observation
Authors: Akhlaque Hossain Khan  , Mehedi Hasan Munna  , Muhammad Saiful Islam  , Sumaiya Rahman  , Tofayel Ahmed  , Ripon Jalal Ahmed , Islam Rahatul , Islam Ariful , Mamun Abdullah Al , Dorji Tandin Wangyel , Biswas Md Anik , Abu Saleh Md Abu Obaida  , Asifur Rahman
Published: October 2024

Both meningioma and glioblastoma are very common intra-cranial neoplasm. Typically both have distinguishing clinical and radiological features which aid in diagnosis and thus pre-operative preparation, planning, counseling the patient etc. But dilemma may often arise in case of non-grade-I meningioma making confusion in favor of higher grade astrocytoma (glioblastoma). In that case total per-operative picture, surgical approach, post- operative managements, and disease prognosis will be altered. We faced such kind of confusion in a case so reported here.
Bang. J Neurosurgery 2024; 13(2): 157-161
Gluteric aciduria ( type-I) Presenting as Bilateral Subdural Hygroma- A Case Report with Literature Review
Authors: Asaduzzaman  , Rahman MZ , Ahsan S , Afroz R , Asfaquzzaman M , Ashraf T , Akter N , Ahmed MT , Popy RA
Published: October 2024

Glutaric aciduria type 1 (GA-1) is an autosomal recessive rare neurometabolic disorder caused by absent or deficient activity of glutaryl- CoA dehydrogenase. Patient with gluteric aciduria are more likely to develop collection in the subdural space secondary to cerebral atrophy and expansion of CSF spaces. A 1 year and 10 months toddler presented with increased head circumference since birth and generalized seizure for last few days. Neuroimaging showed bilateral subdural collection of CSF intensity. Bilateral subdural peritoneal shunt was inserted. With early diagnosis and adequate treatment , the majority of children with gluteric aciduria type-I are able to live normal. However treatment for gluteric aciduria type-I must be continued for life to avoid lifethreatening complications
Bang. J Neurosurgery 2024; 13(2): 162-164
A Study of Evaluation of Finish Line of Die in Fixed Prosthodontic Laboratory
Authors: Kabir Md Alamgir , Zaki Mohammed Mahbub , Ferdous Jannatul , Mahmud Atique , Rajii Alimul , Rahman Md Masudur , Rahman Md Mahbubur
Published: October 2024

Background: The purpose of a fixed prosthodontic treatment may vary from the restoration of a single tooth to the complete rehabilitation of full occlusion. Finish line design is important in any tooth preparation, as finish line ensures the success of the future prosthesis. Finish line affects not only retention but also stability of fixed prosthesis. The finish line must be distinct, uniform, and smooth. Finish line is important during tooth preparation for acceptable marginal adaptation. The finish line must be easy to prepare, it must be easy to duplicate in impression, conservative, and provide sufficient strength to restore material. Finish line design helps in measuring the surface detail recording ability of an impression material. Various tooth preparation designs have distinct finish lines. Objectives: To evaluate the finish line of the die in a fixed prosthodontic laboratory. Materials and Methods: This laboratory based descriptive, cross-sectional, observational study has been conducted in the department of prosthodontics, BSMMU, with a sample size of 125 working casts die having different finish lines. The purpose of this study was to observe the finish line of the die of the working cast by using a dental magnifying loop. Data was collected on the basis of type, location, and quality of the finish line and recorded on a predesign data collection sheet. Collected data were analyzed by using the chi-square test. A P-value <0.05 is considered statistically significant.
Result:  Among 125 dies, according to location of finish line maximum number of dies 110 (88%) were showed sub gingival finish line but according to types of finish line 112 (88.40%) dies were showed chamfer finish line and according to quality of finish line 105 (84%) dies were showed detectable finish line.
Conclusion: According to the results of the study, it can be concluded that the tooth preparation for single crown that have been done in the department of prosthodontics, BSMMU most of their finish line is sub gingival, chamfer and detectable.
Update Dent. Coll. j: 2024; 14(2): 9-14