bluuebunny/crossref_metadata_2025 huggingface dataset:
Inflamación I: eventos celulares
Authors: De Echeverri María Teresa
Published: November 2023

(No disponible)
Actualidades en anatomía: ganglio trigeminal
Authors: Mejía Carlos
Published: November 2023

(No disponible)
Una nueva iniciativa en educación para los profesionales de la salud
Authors: Bolaños Manrique Oscar
Published: November 2023

(No disponible)
Longitud de trabajo en endodoncia
Authors: Rodríguez María Isabel
Published: November 2023

En la actualidad existen muchos métodos para determinar la longitud de trabajo o Conductometria en Endodoncia. Entre ellos podemos mencionar el método de Ingle, basado en la medición previa del conducto en la radiografía y luego introducir el instrumento hasta esa longitud y verificar radiográficamente; el de combinar la sensación táctil con verificación radiográfica; basarse en longitudes promedio, fórmulas matemáticas como la propuesta por Kuttler y aparatos electrónicos.La literatura actual aboga por la utilización de estos últirrws por ser aparatos confiables pero han presentado varias limitaciones las que impiden que se popularicen en nuestro medio. En Endodoncia aún hoy en día se trabaja muy "a ciegas" y aunque seguramente en el futuro se deberá tener menos confianza en la radiografía, actualmente es importante que se combine el criterio clínico del operador con una interpretación racional de la radiografía, para obtener una adecuada longitud de trabajo.
Manejo de espacio en dentición primaria y mixta
Authors: Hernández Jesús Alberto , Gardeazabal Luis Ernesto
Published: November 2023

El objetivo del presente artículo fue examinar las causas potenciales de pérdida de perímetro en los arcos dentales y describir algunos de los dispositivos más comunes utilizados para prevenir dicha pérdida. El clínico además de los aparatos aquí descritos dispone de una amplia gama de posibilidades según su conveniencia y habilidad.
Sistematización, informática y telemática
Authors: Contreras Caballero Nelson
Published: November 2023

(No disponible)
La amalgama dental: el material, interacciones con el ambiente oral y contribución a la carga corporal de mercurio
Authors: Celis Marietta , Contreras Adolfo , Vallejo Carmén Elisa
Published: November 2023

La amalgama dental es el material restaurador más utilizado en la clìnica que en la actualidad desata inmensa controversia a nivel mundial. Numerosos estudios concluyen de manera contradictoria sobre las bondades o los posibles efectos negativos cuanda se utiliza como restaurador en cavidades de dientes posteriores. El propósito de este articulo es realizar una revisión sobre el tema, enfatizando en tres aspectos básicos:1. La fisioquìmica de la amolgama dental.2. Las interacciones del material con el medio oral.3. La contribución de la amalgama dental a la carga corporal de mercurio, para ayudar a despejar las dudas que asaltan concretamente a la profesión odontológica y a la comunidad en relación con la situación de mercurio y la salud humana. Es necesario realizar investigaciones más explicitas sobre el tema, ya que en el momento se conoce que la amolgama puede contribuir a incrementar los niveles de mercurio en una persona, pero no se ha aclarado totalmentecómo.
Manejo clínico de un paciente con estomatitis aftosa recurrente aplicando laser terapéutico Beatríz Guzmán de Suárez, Arnulfo Arias Rojas
Authors: Guzmán de Suárez Beatriz , Arias Rojas Arnulfo
Published: November 2023

Las aftas recurrentes son un problema aún no resuelto, especialmente en lo relativo al tratamiento. Este caso clínico permitirá un análisis del comportamiento de las aftas recurrentes frente a un agente físico como es el laser terapéutico.
Avances en inmunología y respuesta del huésped en enfermedad periodontal
Authors: Contreras Adolfo
Published: November 2023

El entendimiento de la Respuesta Inmune del individuo a la infección bacteriana periodontal, resulta importante para establecer nuevos y/o mejores criterios diagnósticos o pronósticos. También sirve, para proponer terapias más racionales en el tratamiento de las Periodontitis. Esta revisión pretende actualizar sobre los avances en el área de la Inmunobiología y la aplicación de dichos conocimientos en el entendimiento de la Inmuno/patogénesis de las enfermedades Periodontales. Se analizan los siguientes aspectos: las células del sistema inmune, las moléculas de superficie celulares, el complejo mayor de histocompatibilidad; (CMH); los antígenos de díferencíación (CDs); los receptores, las adhesinas como las integrinas, los Icam, las selectínas, las adresinas vasculares; las moléculas efectoras como los anticuerpos, las citoquínas, el complemento, los mediadores de la inflamación como los proteoglícanos, las kínínas, las anafílotoxinas, los productos del ácido araquídónico como las prostaglandinas y los leucotrienos, aminas activas como la histamina, los mecanismos de inmunidad innata y, finalmente, la respuesta inmune del huésped en las enfermedades periodontales.
Reporte de un caso: incisivo central único
Authors: ´Hernández Jesús Alberto , Gardeazábal Luis Ernesto
Published: November 2023

En este artículo se revisan aspectos generales sobre la ausencia congénita de dientes y los diversos factores asociados a dicha anomdía. Se resalta la importancia de la herencia en la oligodoncia y la asociación a problemas sistémicos. Se presenta además el caso de una paciente de la Clínica Integral Infantil del Departamento de Estomatología de la Universidad del Valle, con ausencia del gérmen temporal y permanente de un incisivo central superior, su manejo clínico y el curso del tratamiento hasta el momento.
Editorial
Authors: García Jose Domingo
Published: November 2023

Editorial
Aspectos Socio-históricos de la fundación del Departamento de Estomatología de la Universidad del Valle
Authors: Barreto José Fernando
Published: November 2023

(No disponible)
Evaluación académica
Authors: Estrada John Harold
Published: November 2023

(No disponible)
Comportamiento fisiológico del cantiliver en implantología oral
Authors: Olave Bustamante Gilberto , Rueda García Adriana
Published: November 2023

En  el  presente  artículo  se  realiza  la  revisión  y  el  análisis  de un  esquema   de  rehabilitación  mediante  la   utilización   del  principio   cantilever   o   puente   voladizo,  y su comportamiento   fisiológico   cuando   se  aplica  sobre  dientes  naturales  o  sobre  implantes  de   oseointegración.
Desde  que  se  publicaron  los  primeros  trabajos  realizados  por el grupo de  los Suecos  el principal  y  mayor  esquema   de  rehabilitación   utilizado  fue  el  cantilever   sobre  un  número   plural   de  implantes  colocados    en   la   zona   anterior  del   maxilar  o   la   mandíbula. 
Son   indiscutibles  las  tasas  de  éxito  que   se  lograron  con  este  principio,  desafiando  muchas  veces  las  reglas  aplicadas  en  las  prótesis  fijas  convencionales.   Se  definen  entonces  varios  conceptos   de   áreas,  fuerzas   y  eficiencia   y  rendimiento  masticatorio  para  poder  entender  de  forma   más  racional  y lógica  lo  que ocurre  en  este tipo  de rehabilitaciones.  Se  sintetiza  el  resultado  de  las  diversas   publicaciones  que  existen  al   respecto.
Editorial
Authors: Hernández Silva Jesús Alberto
Published: November 2023

Editorial
Preliminary Debris Risk Analysis for Mega-Constellation Architectures After Orbit-Raising Fragmentation Event
Authors: Canoy Joseph C. , Bettinger Robert A.
Published: November 2023

This paper presents a theoretical examination of the potential debris conjunction dangers faced by mega-constellations in both low Earth orbit (LEO) and medium Earth orbit (MEO). The analysis focuses on the risks posed by debris fields created by breakups occurring during an orbit-raising maneuver for vehicle replacement and/or capability reconstitution, using current telecommunications mega-constellations, such as Starlink and OneWeb, as examples. The mega-constellation designs consist of 750 and 150 satellites arranged using the Walker-Delta design for the LEO and MEO cases, respectively. The research employs physics-based orbital propagation and Monte Carlo simulations to evaluate the potential consequences of a single satellite breakup during orbit raising. The results of the simulations are used to calculate the probability of catastrophic collision and compare the debris risk between the LEO and MEO mega-constellations, with a bimodality analysis conducted for the MEO constellation. Monte Carlo analysis indicates that the LEO mega-constellation features the highest percentage of potential catastrophic collisions between debris fragments and the mega-constellation. Specifically, satellite breakup events starting within an altitude range of 100–199 km below the LEO mega-constellation, or approximately at the midpoint of a Hohmann transfer from a 300-km parking orbit, pose the greatest risk to the constellation.
Knowledge About The Interrelationship of Oral and Systemic Health Among Postgraduate Dental Students and General Dental Practitioners of West Tamil Nadu – A Questionnaire Study
Authors: Mani Sudhaa , Pazhani Ambiga , Swaralaya Shree B. , Sahuthullah Yasmeen Ahamed , GS Sivaraman , Susairaj Babu
Published: November 2023

Objectives:

Oral health status is an integral component of general health. Many studies have shown that the oral cavity exhibits manifestations of many systemic diseases and acts as a predictor of oral health. The aim of the study is to assess the knowledge about the interrelationship of oral and systemic health among postgraduate dental students and general dental practitioners of west Tamil Nadu.

Material and Methods:

Data was collected using a self-administered pilot tested questionnaire. Informed consent was obtained from all the participants and demographic details were collected for the participants of study. The questionnaire was sent through email. Study data obtained were entered into Statistical Package for the Social Sciences (SPSS) Version 25. Comparison between the variables was done using chi-square test. Level of significance was set at 5% (p < 0.05).

Results:

The results were tabulated and comparison of knowledge about oral and systemic diseases among general practitioners and postgraduates were analyzed using nonparametric – Mann-Whitney test. General practitioners had comparatively better knowledge on inter-relationship of oral and systemic health than postgraduate students. 44.17% of respondents in general dental practice knew that a relationship exists between oral and general health, but application of this knowledge in treating medically complex patients was limited.

Conclusion:

Greater emphasis should be placed on this association by interfiled (medical and dental) training from the undergraduate level which can be rectified by modifying the academic regulations. Continuing education programs should be frequently conducted on educating dental, medical and other healthcare professionals on the robust and latest evidence of the oral-systemic link.
Range management for efficient reproduction
Authors: Olson K. C.
Published: November 2023

The purpose of this article is to discuss the relationship between range management practices and reproductive performance of beef cattle. The primary axis of this relationship is via the influence of range management on the nutritional status of the cow and the concomitant effect of nutritional status on reproductive status. Abundant research on beef cattle in confinement has established the relationship of nutritional status on reproductive status. Research evaluating beef cow nutritional responses to range management is more limited, and evaluations of reproductive responses to range management are even fewer. Grazing management practices that influence beef cow performance include stocking rate, grazing distribution, and grazing systems. Stocking rate has the greatest influence, with heavy stocking rates diminishing a cow's ability to select and consume a highly nutritious diet. This limitation on nutrient intake decreases the cow's reproductive performance. Range management to improve grazing distribution effectively increases forage supply by enticing cows to consume underutilized forage, thereby altering the stocking rate relationship in favor of supporting more cows or higher nutrient intake by individual cows. Grazing systems that involve multiple pastures so grazing and rest can be scheduled among the pastures have variable effects on cattle performance, but they decrease performance more often than not compared with continuous grazing. The limitation of the pasture area to which cattle have access in a grazing system effectively decreases the forage supply, and can thereby decrease diet selection and nutrient intake. Alternative forages, especially complementary forages that grow in the early spring, can dramatically improve cow nutritional status during the critical pre-and postpartum periods of the annual beef cow production cycle. Supplementation, particularly the use of protein with low-quality forages, can augment beef cow reproductive status, as long as it is managed in concert with proper grazing management. In conclusion, various range management practices can have positive or negative effects on beef cow nutrition and reproduction. Range management needs to be carefully planned and implemented to ensure that it contributes to efficient reproduction.
Gastric ulcers in horses
Authors: Andrews F. M. , Buchanan B. R. , Elliot S. B. , Clariday N. A. , Edwards L. H.
Published: November 2023

Gastric ulcers are common in horses resulting in decreased performance and economic loss to the industry. Ulcers usually occur in the nonglandular mucosa of the stomach, which lacks adequate protection against the harmful effect of stomach acids. Also, performance horses are fed high hydrolyzable carbohydrate (grain) diets, which lower stomach pH and serve as substrates for resident fermentative bacteria, such as Lactobacillus spp. By-products of these bacteria include organic acids (VFA and lactic acid) that cause injury to the mucosa. This manuscript reviews the anatomy and barrier function of the stomach, and the causes and risk factors for development of gastric ulcers in horses.
The follicular phase in pigs: Follicle populations, circulating hormones, follicle factors and oocytes,
Authors: Guthrie H. D.
Published: November 2023

The predominant pattern of follicle development in pigs is characterized by continuous activation, slow growth to the antral stage, and rapid growth to 4 to 5 mm followed by atresia. The only time that this pattern is broken is when a small portion of the follicle population is selected for ovulation. The mechanisms that regulate the selection of ovulatory follicles are not well understood. However, the ovulatory cohort shifts from FSH to LH dependence at the expense of the nonovulatory follicles as indicated by the following: 1) decreased secretion of FSH, and 2) decreased expression of the FSH receptor and increased expression of the LH receptor. The selection of ovulatory follicles may be dependent on the interaction of members of the intraovarian IGF system to maintain a high level of IGF-I bioavailability. The maintenance of a proliferating population of antral follicles is critically dependent on circulating FSH. A naturally or experimentally induced increase in circulating FSH levels results in an increase in antral follicles; conversely, decreased secretion of FSH is followed by a decrease in the number and in health status of antral follicles. Gonadotropin treatment with eCG or PG600 triggers selection of ovulatory follicles, and although these treatments do not increase litter size, they are beneficial for treatment of anestrus and, in conjunction with hCG or GnRH analogs, provide better control of the time of ovulation. The use of porcine FSH has not increased ovulation rate or improved oocyte developmental competence. To improve reproductive efficiency in the future, research should be directed toward obtaining more knowledge about genetic and physiological regulation of ovulatory follicle selection and the effect of follicle development on oocyte developmental competence.
Wprowadzenie innowacji w przedsiębiorstwie poligraficznym i ich wpływ na jego rozwój
Authors: Kruk Grzegorz , Stall Krzysztof
Published: November 2023

O innowacyjności w przedsiębiorstwach można znaleźć wiele artykułów, wskazujących, że są one źródłem rozwoju przedsiębiorstwa i wypracowania przewagi konkurencyjnej. Sam konstrukt innowacyjności najczęściej jest traktowany w odosobnieniu od innych, gdzie nie sama innowacja tworzy wartości. Dopiero gdy innowacja zostanie skomercjalizowana, może mieć przełożenie na realny rozwój przedsiębiorstwa oraz wypracowanie przewagi konkurencyjnej. W artykule przedstawiono wszystkie elementy oraz procesy, które miały istotny wpływ na ulepszenia z punktu widzenia prowadzenia badanego przedsiębiorstwa. Określono również, jak udział przekazanych środków na rozwój innowacji w przedsiębiorstwie przyczynił się do rozwoju modernizacji w poszczególnych sektorach przedsiębiorstwa. Celem artykułu było przedstawienie działalności innowacyjnej przedsiębiorstwa z branży poligraficznej w celu jego rozwoju, że szczególnym wpływem innowacji na dział logistyki, zarządzanie przedsiębiorstwem oraz rozwój internetu rzeczy. W artykule określono udział przekazanych środków na rozwój innowacji w przedsiębiorstwie, które w latach 2015–2022 przyczyniły się do rozwoju innowacji w poszczególnych sektorach przedsiębiorstwa. Przedstawiono rodzaje innowacji wprowadzonych w przedsiębiorstwie. Dane źródłowe zostały zaczerpnięte z danych finansowych badanego przedsiębiorstwa. W badanym okresie liczba zatrudnionych pracowników była w przedziale 49–80 osób.
Zarządzanie mikromobilnością – wybrane kwestie
Authors: Janczewski Jerzy , Janczewska Danuta
Published: November 2023

Zarządzanie mikromobilnością można odnieść do koordynacji działań i usług, które umożliwiają bezpieczne i efektywne korzystanie z środków transportu mikromobilności, takich jak: elektryczne hulajnogi, rowery, skutery, mikrosamochody deskorolki, rolki, segwaye i inne tego typu urządzenia. Celem artykułu jest przedstawienie istoty zarządzania mikromobilnością i zweryfikowanie hipotezy badawczej, że mikromobilność i jej dalszy rozwój wymaga wielu skoordynowanych działań, np. planowania tras, zapewnienia odpowiedniej infrastruktury, zarządzania flotą mikropojazdów, monitorowania bezpieczeństwa, współpracy uczestników mikromobilności i stałej wymiany danych. Metodami badawczymi wykorzystanymi w pracy były analiza literatury przedmiotu obejmującej pozycje literaturowe, raporty i informacje od interesariuszy. Zastosowano również metodę opisu, analizy i dedukcji. Całość zwieńczono podsumowaniem.
Synthesis and emission dynamics of sub-3 nm upconversion nanoparticles
Authors: Amouroux Baptiste , Eftekhari Ali , Roux Clément , Micheau Jean-Claude , Roblin Pierre , Pasturel Mathieu , Gauffre Fabienne , Würth Christian , Resch-Genger Ute , Sliwa Michel , Bouchet Aude , Coudret Christophe
Published: November 2023

Reducing the size of upconversion nanoparticles (UCNPs) down to a few nm yields unique luminescent materials containing a very small number of emitters. Considering the bottom limit of one activator per particle, such ultrasmall UCNPs offer an unprecedented platform to study the contributions of the different energy transfer processes at play in upconversion luminescence, especially the role of cross relaxation. Maintaining detectable emission despite the limited number of emitting ions and the high surface-to-volume ratio requires suitable particle architectures. The preparation of Na(Gd-Yb)F4:Tm emissive sub-3 nm diameter ꞵ-phase UCNPs was achieved using a gadolinium-rich composition, in situ mixing of the precursors NaOH and NH4F, and a microwave high-temperature cycling sequence that allowed precise control of the particle size and dispersity. Coating strategy of these cores with a NaGdF4 inert shell was performed to minimize the deleterious influence of surface quenching (SQ). Time-resolved luminescence measurements combining standard NIR excitation of the Yb3+ sensitizer and direct UV excitation of the Tm3+ activator were performed to evaluate cross relaxation and surface quenching processes in the luminescence properties of these UCNPs. The fine tuning of the number of activators per particle via an optimized synthesis pathway along with the use of an appropriate excitation scheme enabled us to select the operating cross relaxation (CR) processes, to provide an accurate analysis of the different mechanisms at play in these model nanoparticles, and to characterize the structure of the core-shell ultrasmall UCNPs.
Automated and Parallel Transfer of Arrays of Oriented Graphene Ribbons
Authors: Bencherif Amira , Tie Monique , Martel Richard , Bouilly Delphine
Published: November 2023

The transfer of two-dimensional materials from their growth substrate onto application wafers is a critical bottleneck in scaling-up devices based on such nanomaterials. Here, we present an innovative approach to achieve the automated and simultaneous transfer of arrays of graphene ribbons, with precise control over their orientation and alignment onto patterned wafers. The transfer is executed in a simple, yet efficient apparatus consisting of an array of glass columns, strategically shaped to control ribbon orientation and arranged to match the destination wafer, coupled to a dual inflow/outflow pumping system. This apparatus enables the transfer of a custom array of parallel graphene ribbons in a fraction of the time required with traditional methods. The quality of the transferred graphene was evaluated using optical imaging, scanning electron microscopy, hyperspectral Raman imaging, and electrical transport: all consistently indicating that the transferred graphene exhibits excellent quality, comparable to a manual transfer by an expert user. The proposed apparatus offers several competitive advantages, including ease of use, high transfer throughput, and reduced nanomaterial consumption. Moreover, it can be used repeatedly on the same wafer to assemble arrays of overlayed materials with controlled relative orientations. This approach thus opens promising opportunities for the large scale fabrication of various heterostructures and devices based on vertical assemblies of 2D nanomaterials.
The Colloidal Stability and Solubility of Metal-Organic Framework Particles
Authors: LeRoy Michael , Perera Anton , Lamichhane Shasanka , Mapile Ashley , Khaliq Faiqa , Kadota Kentaro , Zhang Xianghui , Ha Su , Fisher Racheal , Wu Di , Risko Chad , Brozek Carl
Published: November 2023

Chemical separation membranes, drug delivery agents, and other nascent applications of metal-organic frameworks (MOFs) benefit from preparing MOFs as nanoparticles (nanoMOFs) and by controlling their particle surfaces. Despite the lack of deliberately added surface ligands, common examples of nanoMOFs exhibit multi-week colloidal stability in a range of polar solvents, in stark contrast with most conventional nanoparticles that require surface functionalization with bulky ligands. And yet, the origin of this stability remains unknown. Although nanoMOF zeta potentials exceed |±20 mV|, electrostatics alone cannot explain colloidal stability. Here, we demonstrate that nanoMOFs suspend only in solvents that dissolve the constituent MOF linkers. Moreover, the maximum “solubility” of nanoMOFs, i.e., the concentration of saturated particle suspensions, correlates with the solubility of the linkers in the same solvent. Calorimetry measurements indicate that nanoMOF immersion enthalpies resemble the solvation enthalpies of the linkers, suggesting solvent-linker interactions dictate nanoMOF colloidal stability. As a proof-of-concept, whereas nanoMOFs generally suspend only in polar solvents, we achieve toluene nanoMOF suspensions by identifying linkers soluble in toluene. Furthermore, atomistic molecular dynamics simulations reveal that solvents best at dissolving nanoMOFs are those that pack densely into the pores and interact with the MOF linkers. These results provide a predictive tool for achieving nanoMOF colloidal stability and highlight the uniqueness of defining a MOF “surface”, where solvents access both interior and exterior surfaces.
On-tissue dataset-dependent MALDI-TIMS-MS2 bioimaging
Authors: Heuckeroth Steffen , Behrens Arne , Wolf Carina , Fütterer Arne , Nordhorn Ilona D. , Kronenberg Katharina , Brungs Corinna , Korf Ansgar , Richter Henning , Jeibmann Astrid , Karst Uwe , Schmid Robin
Published: November 2023

Trapped ion mobility spectrometry (TIMS) adds an additional separation dimension to mass spectrometry (MS) imaging, however, the lack of fragmentation spectra (MS2) impedes confident compound annotation in spatial metabolomics. Here, we describe spatial ion mobility-scheduled exhaustive fragmentation (SIMSEF), a dataset-dependent acquisition strategy that augments TIMS-MS imaging datasets with MS2 spectra, where fragmentation experiments are systematically distributed across the sample and scheduled for multiple collision energies per precursor ion. Extendable data processing and evaluation workflows are implemented into the open source software MZmine. The workflow and annotation capabilities are demonstrated on rat brain tissue thin sections, measured by matrix-assisted laser desorption/ionisation (MALDI)-TIMS-MS, where SIMSEF enables on-tissue compound annotation through spectral library matching and rule-based lipid annotation within MZmine and maps the (un)known chemical space by molecular networking. The SIMSEF algorithm and data analysis pipelines are open source and modular to provide a community resource.
DELFI: A computer oracle for recommending density functionals for excited states calculations
Authors: Avagliano Davide , Skreta Marta , Arellano-Rubach Sebastian , Aspuru-Guzik Alán
Published: November 2023

Density functional theory (DFT) is known as the workhorse of computational quantum chemistry. One of its main limitations, if not the main one, is that choosing the right functional to employ is a non-trivial task left for human experts. The choice is particularly hard for excited states calculations, when using the time-dependent formulation of DFT (TD-DFT). This is not only due to the approximations and limitations of the method, but also because the photophysical properties of a molecule are defined by a manifold of states that all need to be properly described in a balanced manner to obtain an accurate photochemical picture. This includes not only the relative energy of the states, but also capturing the correct character, order and intensity of the transitions. In this work, we developed a scoring system to quantitatively define the accuracy of an excited states calculation by simultaneously considering at the same time all these properties of a manifold of states. The scoring system is generalizable to any level of theory, we here applied it to a large dataset of organic molecules, calculating 38 scores for as many common functionals of different type and rung, against a higher accuracy method for a total of more than 820.000 single point calculations. The results of these calculations are collected in a database that we released and made it open, providing 4 million datapoints to be used by the community for future applications. We used the scores we extrapolated to train a graph attention neural network that is used to predict the 38 scores for molecules represented as 2D graphs. We call this oracle DELFI (Data-driven EvaLuation of Functionals by Inference), which can be used to quickly screen and predict the ranking of functionals to calculate optical properties of organic molecules. A corresponding web application allows to easily run DELFI and analyze the results, alleviating the hurdle of choosing the right functional for TD-DFT calculations.
Probing Electrochemical Strain Generation in Sodium Chromium Oxide (NaCrO2) Cathode in Na-ion Batteries during Charge/Discharge
Authors: Wable Minal , Bal Batuhan , Çapraz Ömer Özgür
Published: November 2023

Sodium chromium oxide, NaCrO2, exhibits promising features as a cathode electrode in Na-ion batteries, yet it encounters challenges with its capacity fading and poor cycle life. NaCrO2 undergoes multiple phase transitions during Na ion intercalation, eventually leading to chemical instabilities and mechanical deformations. This study aims to investigate the reversible and irreversible mechanical deformations in NaCrO2 using an operando digital image correlation (DIC) coupled with electrochemical techniques. Electrochemical strains were recorded during either cyclic voltammetry or galvanostatic cycling. The electrode undergoes significant irreversible mechanical deformations in the initial cycle, and irreversibility decreases in the subsequent cycles. During desodiation and sodiation, the electrode initially undergoes volume contraction followed by expansion. The strain derivative peaks align well with the peak of the capacitive derivatives, indicating the phase-transition-induced deformations in the electrode. Cumulative irreversible strains demonstrate a linear relationship with the square root of cycling time, indicating irreversibility arising from forming a cathode-electrolyte interphase layer. The outcome of this study provides valuable insights into mechanical deformations in NaCrO2 electrodes during battery cycling and guides the design of mechanically robust cathodes for Na-ion batteries.
Diseño y optimización curricular desde el enfoque descriptivo basado en mapas mentales y redes de conocimiento
Authors: Díaz Álvarez Cristian Julián , Mojica Sánchez Ángela , Rojas Gutiérrez Saul Eduardo
Published: November 2023

El diseño y evaluación de un plan de estudios son actividades prioritarias para la habilitación y acreditación de programas. Al igual que en una cinta de Moebius, el currículo es el punto de partida, y a la vez el beneficiario, de las funciones misionales de docencia, investigación, extensión e internacionalización. Sin embargo, en la mayoría de los casos éste no se construye y desarrolla a partir de la relación imbricada de temas, conceptos y resultados de aprendizaje; buscando una superestructura que asegure tanto lo multidimensional, como el pensamiento crítico y la antinomia. En este contexto, la experiencia de aplicar un método heterodoxo basado en la complejidad y diagramado en mapas mentales y redes de conocimiento, permite obtener propuestas curriculares compactas, robustas y muy bien estructuradas. Método que permitió un 100% de efectividad en once procesos de renovación de registro calificado, dos acreditaciones y en cinco solicitudes de registro en distintas universidades del país.
DOCK1 insufficiency disrupts trophoblast function and pregnancy outcomes via DUSP4-ERK pathway
Authors: Xu Yichi , Liu Xiaorui , Zeng Weihong , Zhu Yueyue , Dong Junpeng , Wu Fan , Chen Cailian , Sharma Surendra , Lin Yi
Published: November 2023

Abnormal trophoblast function is associated with diseases such as recurrent spontaneous abortion, pre-eclampsia, and preterm birth, and endangers maternal and fetal health. However, the underlying regulatory mechanisms remain unclear. In this study, we found DOCK1 expression is decreased in the placental villi of patients with recurrent spontaneous abortion, and that its expression determined the invasive properties of extravillous trophoblasts (EVTs), highlighting a previously unknown role of DOCK1 in regulating EVT function. Furthermore, DOCK1 deficiency disturbed the ubiquitinated degradation of DUSP4, leading to its accumulation. This caused inactivation of the ERK signaling pathway, resulting in inadequate EVT migration and invasion. DOCK1 was implicated in regulating the ubiquitin levels of DUSP4, possibly by modulating the E3 ligase enzyme HUWE1. The results of our in vivo experiments confirmed that the DOCK1 inhibitor TBOPP caused miscarriage in mice by inactivating the DUSP4/ERK pathway. Collectively, our results revealed the crucial role of DOCK1 in the regulation of EVT function via the DUSP4-ERK pathway and a basis for the development of novel treatments for adverse pregnancy outcomes caused by trophoblast dysfunction.
O ENSINO DA BIOENERGÉTICA NA PERSPECTIVA INTERDISCIPLINAR: UMA EXPERIÊNCIA NA FORMAÇÃO INICIAL DE PROFESSORES DE EDUCAÇÃO FÍSICA
Authors: Santos Maria Gisele dos , Silva Cinthia Lopes da , Kanan Lilia Aparecida , Velozo Emerson Luís
Published: November 2023

A educação superior requer inovações e um esforço dos docentes responsáveis pelas disciplinas para que os novos conhecimentos sejam acessíveis aos graduandos, para que consigam produzir múltiplos sentidos aos temas trabalhados. A interdisciplinaridade é também fundamental nesse contexto e sua correspondência na Educação Básica, já que tradicionalmente há uma divisão entre as ciências e os conhecimentos produzidos. Assim, este trabalho, a partir dos pressupostos qualitativos, apresenta uma investigação baseada em experiência pedagógica e tem como objetivos: (i) viabilizar aos futuros professores de Educação Física de uma instituição pública do sul do Brasil, o acesso ao conhecimento interdisciplinar no ensino do conteúdo bioenergética, e (ii) analisar a experiência realizada. A experiência pedagógica é guiada pelas diferentes linguagens relacionadas à arte e ao corpo, resultando na produção de planos de ensino voltados ao Ensino Fundamental da Educação Básica. Como resultados, verificamos que a busca pelo conhecimento interdisciplinar, aliada à mobilização das emoções, é uma abordagem pedagógica poderosa que não apenas enriquece a jornada de aprendizado dos estudantes, mas também, capacita-os a responder às demandas da vida contemporânea a partir de um horizonte teórico ampliado e potencializado holisticamente. Tal abordagem é um investimento valioso no desenvolvimento de futuros professores que serão agentes de transformação na sociedade e terão expertise para mediar conhecimentos relacionados ao corpo e às manifestações corporais.
ИССЛЕДОВАНИЕ СХЕМЫ УДВОЕНИЯ ЧАСТОТЫ СЛЕДОВАНИЯ СВЕРХКОРОТКИХ СВЕТОВЫХ ИМПУЛЬСОВ ДЛЯ ФОРМИРОВАНИЯ ПОСЛЕДОВАТЕЛЬНОСТИ ВЫБОРКИ АНАЛОГО-ЦИФРОВЫХ ФОТОННЫХ СИСТЕМ
Authors: Злоказов Е. Ю. , Небавский В. А. , Стариков Р. С.
Published: November 2023

Рассмотрена и экспериментально испытанасистемаудвоения частоты следования коротких оптических импульсов лазера в режиме синхронизации мод, предназначенная для формирования последовательности выборки в аналого-цифровых фотонных системах. Основной идеей умножения частоты следования оптических импульсов является разделение исходной импульсной последовательности, а затем относительная временная задержка разделенных сигналов и их сложение. Разделение и сложение могут осуществляется разветвителями либо демультисплексорами.  Представлено аналитическое описание зависимости временной задержки в плечах на сигнал и спектр, полученной в ходе фотодектирования сформированной последовательности. Величина задержки между импульсами регулируется таким образом, чтобы минимизировать нежелательные спектральные составляющие на кратных частоте повторений лазера частотах в СВЧ-спектре фотодетектированной последовательности; в работе минимизировались члены нечетного порядка. Показано, что на максимальную точность предложенного метода также влияет различие мощности складываемых импульсов. В ходе сопоставления полученных в экспериментах данных с результатами численного моделирования удалось достичь точности рассогласования во времени между каналами не более 100 фемтосекунд, а по мощности – не более 1 %. Апертурная ошибка, вычисленная по результатам измерения фазовых шумов, составила 10.2 фемтосекунды.
Mobile-enabled telemedicine system: A new approach to rural healthcare
Authors: M. Theodore Kingslin
Published: November 2023

Access to quality healthcare services remains a significant challenge in rural areas of developing countries. The integration of telemedicine into a mobile-based system offers a potential solution to bridge the healthcare gap and improve access to diagnosis and treatment. This study focused on the integration of telemedicine in a mobile-based system for remote healthcare delivery in rural settings. The proposed system allows patients in rural areas to register and schedule appointments with healthcare providers using a mobile application. It also incorporates remote monitoring, enabling patients to input health related data from monitoring devices and to receive personalized treatment plans. This study evaluated the effectiveness of an integrated system in facilitating remote diagnoses and treatment. Key metrics, such as appointment scheduling rates, video consultation success rates, and patient satisfaction scores, were collected and analyzed to assess the impact of the system.
Celebrating female scientists – AWIS2017
Authors: Editors
Published: November 2023

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The Productivity Commission released its final report ‘New models of tertiary education’ 21 March 2017
Authors: Editors
Published: November 2023

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Monitoreo de Temperatura Mediante Red de Sensores para Mejorar el Uso del Agua en la Agricultura
Authors: Aguilar-González Rafael , Cárdenas-Juárez Marco , Rodríguez-Ortiz Juan Carlos , Romero-Méndez Mauricio Jesús
Published: November 2023

Las tendencias tecnológicas están presentes en distintas áreas, en el caso de la agricultura es posible encontrar aplicaciones tales como los invernaderos automatizados. Sin embargo, para gran parte de los pequeños productores de países con condiciones similares a México, este tipo de avances tecnológicos significa una inversión difícil de hacer. Afortunadamente, hoy en día, es posible mejorar la productividad del campo con tecnología de costo accesible. En este trabajo, se describe el desarrollo de dispositivos electrónicos para medir temperatura dentro de un invernadero de 1000 m2. Estos sensores tienen la capacidad de formar una red, con lo cual se obtuvo la temperatura de varios puntos dentro del invernadero. La información recopilada, fue concentrada en internet y por medio de un algoritmo de interpolación, se determinó aquellas zonas con mayor temperatura. Lo cual permitió realizar riegos puntuales y localizados para hacer uso eficiente del agua. Estas notas de investigación son la primera parte de un proyecto para desarrollar dispositivos electrónicos de costo accesible, capaces de medir las variables climáticas tales como temperatura, humedad relativa y luminosidad, entre otras. Con los datos obtenidos, se podrá calcular el coeficiente de evapotranspiración para estimar la cantidad de agua necesaria en cada zona del cultivo.
Evaluation of Wastewater Coagulation/Flocculation with Chitosan from Shrimp Exoskeletons Waste and Aluminum Sulfate
Authors: Labastida-Núñez Israel , Velasco-Pérez Maribel , Pablo-Reyes Elia Piedad , González-Aragón Abelardo , Beltrán-Villavicencio Margarita
Published: November 2023

Intensive use of water, growing cities, and lack of wastewater treatment are some factors increasing hydric stress worldwide. Coagulation/flocculation is one of the preferred treatments for wastewater. However, aluminum salts are traditionally used in this process. This coagulant has a high environmental footprint and residual aluminum in wastewater is a public health concern. The preparation and use of chitosan as a coagulant aid in coagulation/flocculation with aluminum sulfate were investigated. The ef fect of the order of addition of coagulants (aluminum sulfate followed by chitosan, or chitosan followed by aluminum sulfate), dose of the coagulants, pH, and slow mixing velocity for flocculation were studied. It was found that the removal of total suspended solids (TSS) with aluminum sulfate was relatively unaf fected by pH (aluminum sulfate dose of 100 mg L-1 at pH of 5 units achieved 94% removal of TSS and at pH of 8.2 units 89% removal of TSS), whereas with chitosan was highly af fected (chitosan dose of 180 mg L-1 at pH of 4 units achieved 96% removal of TSS and at pH of 8.2 units 25% removal of TSS). In the coagulation/flocculation experiments where both coagulants were used, it was found that the order of coagulant addition and pH of wastewater have a statistically significant ef fect (P-value < 0.05) on the removal of TSS. Higher removal of TSS was achieved when aluminum sulfate was added followed by chitosan at a wastewater pH of 5 units. Chitosan can be ef fectively used to reduce the use of aluminum salts in wastewater treatment. However, it is necessary to optimize the preparation of this coagulant and investigate other factors, such as variation in the wastewater quality, that can af fect the robustness of the process.
Forecasting the Impact of the Environmental and Energy Factor to Improve Urban Sustainability by Using (SEM)
Authors: Al-Abayechi Yasameen F. , Al-Khafaji Ahmed S.
Published: November 2023

The environmental and energy factor is one of the important factors that most studies have focused on in the field of sustainability, especially in light of the increasing population growth rates and the accompanying increase in consumption and environmental pollution rates. This paper focuses on presenting several different theories and models of urban sustainability for the purpose of identifying the overall factors that constitute it. Structural Equations Modeling (SEM) allows knowledge of the relationships and the strength of influence between these factors. The paper focuses on studying the environmental and energy factors and their impact on other sustainability factors. As most researchers resort to descriptive methods and measures in discussing the subject. The paper aims to adopt models and quantitative measures to determine the factors and indicators of urban sustainability and to clarify the importance, variation, and interdependence between these factors and indicators, adopting the hypothesis that structural equation modeling provides highly reliable tools through which sustainability factors, their relationships, and the mutual influence between them can be measured using the analysis of moment structures (AMOS) program. The result shows that the environmental and energy factors are highly related to the urban design factor (6.0). Doi: 10.28991/CEJ-2023-09-10-013 Full Text: PDF
Ventilation Performance of Air Duct in Double Loaded Corridor Building: A Case Study
Authors: Ulum Muhammad S. , Arminda Wenny , Kamaruddin Maqbul , Satria Widi Dwi
Published: November 2023

Buildings with double-loaded corridor types are often found in Indonesia and generally function as offices or lecture rooms. This type of building is popular because of its efficient circulation path to accommodate the movement of occupants. However, a wall separating the room from the corridor makes it impossible to put windows to implement a cross-ventilation system due to acoustic problems. Hence, to achieve indoor thermal comfort, this type of building relies on using an air conditioning (AC) system. However, with the WHO's call to reduce the use of AC during the COVID-19 pandemic, it is necessary to evaluate cross-ventilation in double-loaded corridor buildings to meet comfort standards while still preventing acoustic problems due to noise from corridors and other spaces. The study proposes a new natural ventilation system using air ducts placed above the corridor ceiling to create cross-ventilation in lecture buildings. The E-ITERA building was chosen as a case study in this research. The building has a glass facade with several small windows that can be opened outside. The corridor of this building is designed with openings at both ends, allowing for direct connection to the outside air. The walls facing the passage have a single door and four small ventilations on the aisle's upper side. Simulations were carried out in two classrooms on the 3rd floor using CFD (Computational Fluid Dynamics) software. Experiments were carried out to change the size of the air duct and the size of the ventilation on the wall that leads to the corridor. The results showed that the air duct was able to create cross-ventilation. Ventilation performance is improved when the WWR air duct is the same as the WWR window. The highest air velocity in the centre of the room is 0.6 m/s. Doi: 10.28991/CEJ-2023-09-10-06 Full Text: PDF
Proposed Changes in Federally Mandated Race and Ethnic Classifications May Undermine Their Original Purpose
Authors: Beveridge Andrew A. , Anderson Margo
Published: November 2023

The Office of Management and Budget (OMB) is proposing an overhaul of “Statistical Policy Directive 15,” commonly referred to informally as OMB15 , the mandated method for collecting data on and classifying the race and ethnic status of the American population. Initiated in 1977, the standards for collecting data on race and ethnicity are mandated to be used by the Census Bureau and all federal agencies, and eventually all state, local, and private entities that receive federal funds, and/or come under civil rights compliance provisions designed to monitor disparities and correct discrimination. The classification was developed to monitor compliance with several civil rights laws affecting many sectors of American life that were passed in the 1960s and in later years. The widespread use and enormous implications of changes in how the United States collects race and ethnicity data mean that we should be very cautious about changes like the ones that have been proposed, and we think it would be wise to make these mandated data classifications both as simple as possible for the U.S. population to understand their meaning and to apply them in the many areas where they are to be used.
Pelatihan Pembuatan Insektisida Herbal Minyak Sereh Bentuk Spray di RPTRA Jeruk Manis
Authors: Fitri Dewi Rahma , Fajar In Rahmi Fatria , Ekadipta Ekadipta , Hardiyati Iin
Published: November 2023

The Real Work Lecture is one of the implementations of the Tridarma activities of higher education which includes community service activities. The theme of the activity is chosen based on the needs of the community. Cases of Dengue Hemorrhagic Fever (DHF) in Jakarta are still high, so prevention is carried out, one of which is by using simple and environmentally friendly herbal insecticides. This training activity was carried out to increase the knowledge and skills of the community about herbal insecticides. The activity begins with a pretest, delivery of material, training and ends with a posttest. The activity was attended by 20 representatives elected by the Kelurahan. Based on the results of the service, it was found that there was an increase in participants' knowledge about herbal insecticides as indicated by an increase in pretest to posttest scores, from 40% to 95%. The product after the training is in the form of herbal insecticide spray preparations that can be used by participants, and can be remade for use as home products.
PANAIT ISTRATI. LITERATURE AND SOCIETY
Authors: VĂNOAGĂ Cristina Matilda
Published: November 2023

Panaït Istrati's contributions to literature extend beyond his creative works, and this quality is reflected in “Panaït Istrati: Littérature et Société. Literature and Society”, edited by Dana Radler, Aurora Băgiac and Teodora-Anca Șerban-Oprescu, and prefaced by Christian Delrue. All the five sections of the bilingual (French and English) volume (“Panaït Istrati Between Two Literary Formulas”, “Biography – Autobiography – Writing”, “Personal Life and Political Life”, “Hybrid Aspects and Folkloric Imaginary”, and “Panaït Istrati and Artistic Transposition”) will grab the reader’s attention from the very first sentence. One of the most complex Romanian writers, born in the Romanian town of Brăila in 1884, Panait Istrati is equally seen as a French writer. His work is influenced by a strong social message, laying a significant emphasis on the world of the proletariat and the disenfranchised. One can easily notice that, starting from between worlds and writing styles, the incursion in Istrati's world correlates his life and work with names such as Romain Rolland, Maryse Condé, Ahmadou Kourouma, and even George Orwell.