bluuebunny/crossref_metadata_2025 huggingface dataset:
Categorización Hotelera como Indicador de Calidad de Servicio en la Parroquia Nueva Loja, Sucumbíos – Ecuador
Authors: Caiza Barahona Ángela María , Alvarado Samaniego María José , Cueva Navarrete Vanessa Margarita , Cifuentes Caiza Jaimar Andrea
Published: April 2024

La calidad en el servicio hotelero es un indicador relevante dentro del mercado competitivo, el cual es valorado por parte del cliente, ya que es la persona que percibe de manera directa el servicio de alojamiento turístico. El objetivo de este proyecto es evaluar la calidad del servicio en los hoteles con categoría 3 estrellas de la parroquia Nueva Loja, que permitirá conocer identificar el nivel de calidad que ofrece los establecimientos a sus huéspedes. Se utilizó la metodología mixta y el método SERVQUAL, encuesta que consta de un cuestionario establecido de 22 preguntas que reflejan la percepción y la expectativa divida en 5 dimensiones, la cual se aplicó a un total de 72 huéspedes. Se realizó el análisis correspondiente a las brechas existentes entre la percepción y la expectativa de los huéspedes, obteniendo como resultado de brechas ponderadas de -68, esto refleja que la calidad del servicio en los hoteles 3 estrellas existe varias falencias con respecto al servicio en sus dimensiones, es decir, el huésped no está satisfecho con el servicio recibido. Con estos resultados se puede concluir que estas empresas hoteleras deberían plantearse nuevas estrategias de calidad, que fomenten la mejora.
Estructura Didáctica de las Licenciaturas a Distancia Híbridas. El Caso Universidad Rosario Castellanos. Eje Temático 3. Modelos y Prácticas Educativas en la Era Digital
Authors: Gómez Córdoba Flor Berenice , Gómez Aguilar Juan Antonio
Published: April 2024

Uno de los desafíos a lo que se enfrenta la Universidad Rosario Castellanos como una institución de reciente creación , es la tarea que conlleva la implementación y operación de su modelo pedagógico en la modalidad a distancia, resaltando la importancia de la creación de un modelo didáctico y comunicacional para la creación del ambiente de aprendizaje, así como la importancia del diseño de su estructura didáctica, al incorporar cada uno de los componentes del modelo para la concreción del hecho educativo.Si bien, este modelo pedagógico representa el ideal del proceso de enseñanza y aprendizaje que se establece en el modelo educativo, su implementación y operación en la modalidad a distancia, representa un reto porque implica transitar del diseño instruccional a un diseño didáctico comunicacional que permita establecer las condiciones tecno-pedagógicas para que el docente a través de los elementos dispuestos que integran el ambiente de aprendizaje genere escenarios de aplicación situacional que propicien experiencias de aprendizajes auténticas. El propósito de este trabajo es compartir el diseño del aula modelo dentro del ambiente virtual de aprendizaje, sus implicaciones en sentido del diseño didáctico, comunicacional gráfico y web como un dispositivo pedagógico integral, que se articula para propiciar la gestión del proceso de enseñanza y aprendizaje. El diseño de esta aula modelo se ubica dentro de un marco de innovación en el sentido de que su diseño da cuenta y concreta la aplicabilidad del componente híbrido y dual como los ejes rectores de la propuesta educativa de la Universidad Rosario Castellanos.
Norma Oficial Mexicana en Picadura de Alacrán: Análisis de Enfermería
Authors: Silva Magaña Guillermo , Hilerio López Ángel Gabriel , Jiménez Macías Iván Ulianov , Vázquez González Guillermo Cesar , Vázquez Espinoza José Antonio , Velasco Rodríguez Raymundo
Published: April 2024

Introducción: la Norma Oficial Mexicana en picadura de alacrán (NOM-033-SSA2-2011) establece reglas oficiales que se debe conocer y cumplir por parte del personal de enfermería. Objetivo: analizar el conocimiento y cumplimiento de la NOM-033-SSA2-2011, por parte del personal de enfermería. Metodología: estudio descriptivo y transversal realizado en una jurisdicción del Estado de Colima, México, donde se aplican dos instrumentos diseñados para su identificación, datos que fueron analizados mediante estadística descriptiva e inferencial. Resultados: la probabilidad de ocurrencia del fenómeno (conocimiento/cumplimiento) sobre la Norma en picadura Alacrán es 58,9%, (OR 0.0589) y el riesgo de que esto ocurra (RR 0.1064) esto quiere decir que la ocurrencia de conocimiento/cumplimiento es del 10.64%, IC 95% (P≤ 0.001). Conclusiones: con base en estos resultados se concluye reflexionar sobre los factores internos y externos que influyen en el fenómeno de conocimiento/cumplimiento establecido por la NOM-033-SSA2-2011.
Identidad Profesional y Reflexión en la Formación Inicial Docente del/la Maestra/O Infantil: Revisión de Alcance
Authors: Garrido Gonzalez Lorena B. , Flores Meza Giannina , Villar Cavieres Natalia , Vergara Ramirez Teresa
Published: April 2024

Esta investigación de revisión de alcance, busco analizar la relevancia y relación que se otorga, en la actualidad, a la construcción identitaria y reflexión pedagógica en la formación inicial docente de maestros/as infantiles a nivel hispanoamericano. Bajo la metodología propuesta se logró la selección final de siete artículos, los cuales fueron analizados en profundidad levantándose a partir de ellos, tres categorías: Escenarios para el desarrollo identitario y reflexión pedagógica en la FID, Identidad pedagógica y reflexión pedagógica, componentes del desarrollo docente y Reflexión narrativa documental como movilizadora de la identidad. Los resultados muestran que se han mantenido las premisas de las últimas décadas frente a dichos constructos, situando a las prácticas pedagógicas como escenarios privilegiados para la construcción identitaria, siendo la reflexión documentada, el medio para visibilizar los pensamientos docentes. A partir de dichos resultados, se propone avanzar en la materia retomando el valor de los modelos pedagógicos reflexivos y la necesidad que ellos permeen el currículo de manera trasversal, no solo a las prácticas pedagógicas, de modo de ir fortaleciendo la FID de manera integral y significativa.
Análisis Jurídico de la Esencia y Naturaleza del Delito de Violación de Infante, Niña, Niño o Adolescente Según el Artículo 308 Bis del Código Penal
Authors: Laura Picavia Mario Helmer
Published: April 2024

Este artículo científico se centra en un análisis detallado del delito de violación sexual de niños, niñas, niños y jóvenes, según tipificado en el artículo 308a del Código Penal boliviano. El objetivo principal es profundizar en la comprensión de la naturaleza y naturaleza de este delito, enfatizando la importancia de proteger los derechos y la seguridad de los niños menores de 14 años, ya que son particularmente vulnerables a este tipo de abuso. En este sentido, los bienes jurídicos protegidos por dichas disposiciones serán interpretados desde el punto de vista jurídico, destacando la importancia del principio fundamental de la inviolabilidad física, psíquica y de género de los menores. Asimismo, se examinará en detalle la naturaleza jurídica del delito en el contexto del derecho penal y su función de protección de los derechos humanos de niños y jóvenes. Se hará especial énfasis en las consecuencias jurídicas y sociales de la comisión de este delito. Desde una perspectiva jurídica, se analizarán las sanciones y salvaguardas previstas por la legislación boliviana, así como su efectividad para prevenir y perseguir tales delitos.  En términos de impacto social, se explorará el devastador impacto social de la violación de bebés, niñas, niños y jóvenes, teniendo en cuenta factores como la revictimización, el acceso a la justicia y la necesidad de una atención integral a las víctimas. El propósito de este artículo es proporcionar un análisis profundo y riguroso del delito de violación sexual de bebés, niñas, niños y jóvenes con el fin de promover la comprensión de su naturaleza esencial y jurídica, así como de sus implicaciones jurídicas y sociales en el contexto de las leyes bolivianas.
Psoriasis Guttata. Reporte de Caso
Authors: Alvarado Lozano Raymi Manuela , Jimbo Torres Yulisa Stephania , Choez Abendaño Yoselyn Isabel , Padilla Cuenca Rocio Elizabeth , Cango Salinas Angie Fernanda
Published: April 2024

La psoriasis es un trastorno cutáneo crónico, inflamatorio e inmunomediado. La psoriasis guttata es una variante distinta de la psoriasis que típicamente se presenta con una aparición abrupta de numerosas pápulas y placas eritematosas y escamosas en forma de gotas en las extremidades y el tronco, clásicamente desencadenadas por una infección estreptocócica. Esta revisión narrativa tiene como objetivo familiarizar a los médicos con las manifestaciones clínicas, la evaluación, el diagnóstico y el manejo adecuado de la psoriasis Guttata.  La psoriasis guttata es una variante de la psoriasis que tiene características epidemiológicas, clínicas e histológicas distintas. A diferencia de la psoriasis vulgar (PV), la GP es más común en niños y adolescentes que en adultos, afecta a personas de todas las razas, así como a hombres y mujeres. Se manifiesta como varias placas escamosas pequeñas (de 2 a 10 mm de diámetro) en forma de gotas. Como trastorno mediado por el sistema inmunológico, su aparición suele ocurrir entre 1 y 3 semanas después de una infección aguda, como la amigdalitis estreptocócica. Se presenta un paciente masculino de 15 años que presenta Psoriasis Guttata secundaria a una infección por amigdalitis estreptocócica.
La Comunicación Asertiva en Estudiantes de las Carreras Pedagógicas. Una Habilidad Social Necesaria en el Contexto Actual
Authors: Salinas Torres Mayra Liliana , Riofrío Leiva Vicente Jacinto , Labanda Jumbo Cristhian German , Jumbo Salinas Gloria Noemí
Published: April 2024

El presente estudio investiga la comunicación asertiva en estudiantes de las carreras pedagógica, en el cual se evaluó los niveles de asertividad, asertividad indirecta y no asertividad a partir de las percepciones de los estudiantes, adaptando la Escala Multidimensional de Asertividad – EMA. Se realizo la conversión de puntuaciones crudas a puntuaciones T lineales para cada uno de los factores de la Escala EMA del Manual de Flores y Díaz (2004). En el estudio participaron 401 estudiantes de carreras pedagógicas de la Facultad de la Educación, el Arte y la Comunicación de la Universidad Nacional de Loja. Se concluye, que, en la asertividad indirecta  y la no asertividad, predominan niveles en el rango medio. Sin embargo, existe la tendencia a tener dificultades para la comunicación asertiva, en lo que respecta a la expresión de sentimientos, emociones e ideas. Por consiguiente, en el perfil asertivo del estudiante de carreras pedagógicas no se identifican niveles altos en el desarrollo de la comunicación asertiva, destacando como tendencia la inclinación hacia niveles bajos.
Meningkatkan Hasil Belajar Service Bawah Pada Permainan Bolavoli Melalui Metode Praktek Lapangan
Authors: Yasin Reksiyanto , Pomatahu Aisah R , Datau Suriyadi , Pauweni Mirdayani , Parengkuan Meyke
Published: April 2024

Tujuan yang ingin dicapai dari penelitian ini, adalah untuk mengetahui kemampuan Servis bawah pada permainan bola volli Penelitian ini menggunakan Peneitian Tindak Kelas (PTK) penelitian tindakan adalah penerapan berbagai fakta yang ditemukan untuk memecahkan masalah dalam situasi sosial untuk meningkatkan kualitas tindakan yang dilakukan dengan melibatkan kolaborasi dan kerja sama peneliti dan praktisi. Berdasarkan Hasil Penelitian dapat meningkatkan kemampuan siswa dalam melakukan servis bawah . Berdasarkan hasil data awal pembelajaran kemampuan Smash ini dalam permainan bola voli pada siswa kelas v sd Pada data awal memperoleh nilai rata-rata sebesar 33,09 . Hasil pengamatan tes kemampuan Smash siswa pada siklus I, diperoleh skor rata-rata sebesar 60.00. Hasil pengamatan menunjukkan bahwa kemampuan Smash pada siklus II  sebesar 83,73%.Hasil tersebut tentunya mendukung keberhasilan pembelajaran kemampuan Servis bawah pada permaian bola voli
Hubungan Daya Ledak Otot Tungkai dan Kelentukan dengan Kecepatan Ushiro Geri pada Kenshi Dojo Sport Center Kabupaten Gorontalo
Authors: Djafar Rivon , Lamusu Ahmad , Lamusu Zulkifli
Published: April 2024

Permasalahan dalam penelitian ini adalah : apakah terdapat hubungan yang signifikan antara daya ledak otot tungkai dan kelentukan dengan kecepatan Ushiro Geri pada kenshi dojo sport center kabupaten gorontalo?. Tujuan dalam penelitian ini adalah : untuk mengetahui hubungan yang signifikan antara daya ledak otot tugkai dan kelentukan dengan kecepatan ushiro geri pada kenshi dojo sport center kabupaten gorontalo. Penelitian ini adalah penelitian korelasi dengan subjek penelitian kenshi Dojo Sport Center Kabupaten Gorontalo. Dengan teknik pengumpulan data menggunakan instrumen tes pengukuran. Adapun hasil analisis inferensial menunjukkan bahwa data berdistribusi normal dan linear serta tidak terindikasi terdapat outler sehingga dilanjutkan dengan uji korelasi pearson dan diperoleh hasil penelitian r_hitung (0.477) r_tabel (0.4227). Hal ini menunjukkan bahwa secara statistik kecepatan memiliki hubungan yang kuat dengan kelentukan dan daya ledak. Jadi hubungan variabel dependen dengan variabel independennya signifikan atau terdapat hubungan yang signifikan antara daya ledak otot tungkai dan kelentukan dengan kecepatan ushiro geri pada kenshi Dojo Sport Center Kabupaten Gorontalo.
Frauen in der Debatte um Antiintellektualismus in den USA
Authors: Nitz Julia
Published: April 2024

Der vorliegende Artikel betrachtet aktuelle gesellschaftspolitische und wissenschaftliche Debatten zu Antiintellektualismus in den USA. Hauptaugenmerk liegt dabei auf der Verortung von Frauen. Zuerst wird aufgezeigt,
wie Hofstadter, der 1963 quasi den Urtext zur Antiintellektualismusforschung in den USA lieferte, die Debatte bis heute bestimmt. Er lässt Frauen im Grunde außen vor, da er davon ausging, dass Weiblichkeit und Intellekt im
19. Jahrhundert als Antipode galten. Diese Annahme prägte nicht nur Diskussionen zu Frauen und Antiintellektualismus, sondern prinzipiell die geschichtliche Betrachtung der Rolle von Frauen in der jungen Republik und im
19. Jahrhundert prinzipiell. Die daraus resultierenden Konzepte der Wahren Frau (True Woman) und der Republikanischen Mutter sind durchaus kritisch hinterfragt worden, aber der Ursprung und die Persistenz dieser Modelle
zur Betrachtung der Selbstwirksamkeit von Frauen bis heute wird hier herausgearbeitet. Um gängige Modelle aufzubrechen und neue Perspektiven auf Frauen und Antiintellektualismus zu werfen, folgen Untersuchungen zum
Antiintellektualismusdiskurs in Rebecca Harding Davis’ autobiographischem Werk Bits of Gossip (1904) und Eliza Frances Andrews’ Bürgerkriegstagebuch The War-Time Journal of a Georgia Girl (1908). Die Positionierung
beider Autorinnen in Ihren Memoiren stellt die weit verbreitete These von der als antiintellektuell definierten Natur der viktorianischen Frau infrage. Die Studien erlauben letztlich Einblicke in die Art und Weise, wie
konservative und progressive intellektuelle Frauen sich selbst in den (Anti- )Intellektualismusdiskurs einschrieben.
Formulation and Evaluation of Polyherbal Hematinic Capsule for Pediatrics
Authors: Rama Rao Tadikonda , Anand Aditya
Published: April 2024

Hematinic deficiencies in children, including those related to iron, folic acid, and vitamin B12, are a serious health issue that impact a child's growth, development, and general wellbeing. Administration of dose, taste, and compliance are common problems with conventional therapies. To address these issues, the production and testing of polyherbal hematinic capsules intended for pediatric usage is the main focus of this work. Strong hematinic properties in plant extracts are selected with care, and the right processing methods are used for young users. The capsule size is adjusted for ease of swallowing, and the polyherbal mixture is improved to increase compliance. To ascertain the effectiveness, safety, and suitability for use in pediatric settings, testing is done. The created polyherbal hematinic capsules exhibit outstanding disintegration time, flow characteristics, and an hourly cumulative drug release of 97.7%. The results imply that hematinic polyherbal capsules have potential as a safe and efficient option for treating paediatric hematinic deficits, addressing compliance concerns and providing an appealing dose form.
Attitude of Vocational Higher Secondary School Students towards Agriculture
Authors: P. V SUBHA.
Published: April 2024

The present study was conducted to find out the attitude of students in Vocational higher secondary schools towards agriculture with a view to compare the students specializing in agriculture with that of students in non-agriculture stream undergoing vocational courses. Data was collected from 500 vocational higher secondary school students of Kerala. The variables were measured using attitude scale towards agriculture. The study indicates that attitude of agriculture specializing students towards agriculture is more than that of other subject students. Attitude towards agriculture between rural urban students of agriculture specialization are alike. Attitude towards agriculture between girls and boys of agriculture specialization are alike.
Advancing Food Industry with Quantum Dots Technology
Authors: Mondal Sunanda , Pant Vimal , Mondal Sayantani
Published: April 2024

Since people consume different varieties of food, they are more conscious of their health nowadays. Food analysis, which is a major element, helps to monitor the food quality for risk assessment regarding public health. As Carbon Quantum Dots (CQDs) are the least toxic, they are in great demand. They help to optimize food packaging, detect as well as monitor foodborne pathogens, and assess food quality utilizing imaging and sensing. Owing to their nontoxicity and eco- friendliness, CQDs stand unique although there are different kinds of Quantum Dots (QDs). To enhance food safety, quality assessment, and packaging, CQDs also deliver exciting possibilities. CQD applications can detect insecticide residues, antibiotics, nutrients, heavy metals, pathogens, and food additives. Furthermore, CQDs find use in food packaging materials in which their Ultraviolet (UV) barrier, antimicrobial, and antioxidant properties increase product shelf life and decrease food waste. Hence, explaining CQDs’ industrial applications in the food sector is the study’s objective. In this paper, CQDs' role in food processing and its industrial applications in food sectors, including food detection and packaging are explored.
Placement Application for Department of Commerce with Computer Applications (Navigator)
Authors: Jayashree V. , . Revathi , C. Preethi. , R Harini.
Published: April 2024

The project's goal is to provide a proposal for the college's "DEPARTMENT PLACEMENT APPLICATION". The system is an application that, with the right login enabled, can be accessed and used efficiently across the entire organisation. The college's Department Placement Coordinator and Placement Cell can utilise this system as an application to manage student placement data. Students who log in should be able to upload a résumé with their personal and academic details on it. This project's primary feature is its one-time registration capability. The ability to keep track of student details is something our project offers. It lowers manual labour and paper work, which saves time. MYSQL is used for the backend and PHP is used for the front end of this project. This will give both the placement officer and students an accurate communication channel and reduces repetitious work that has to be carried out.
Safety, Analgesic, and Anti-Inflammatory Effects of Aqueous and Methanolic Leaf Extracts of Hypericum revolutum subsp. keniense
Authors: M. Vincent Omambia , M. Joseph ORCID Nguta , E. Simon Mitema , A. Gervason Moriasi , Onyancha M. Jared ORCID and
Published: April 2024

In light of the enduring obstacles encountered in analgesia and anti-inflammatory therapeutics despite the strides made in contemporary medical sciences, the quest for alternative efficacious strategies is an imperative pursuit. Thus, this study investigated the safety profiles, as well as the analgesic and anti-inflammatory attributes, of aqueous and methanolic leaf extracts derived from Hypericum revolutum subsp. keniense—a botanical entity entrenched in historical ethnomedicinal practices in the Kenyan context. The assessment of acute oral toxicity of these extracts was conducted in accordance with the Up- and-Down method advocated by the Organisation for Economic Cooperation and Development (OECD), utilizing Swiss albino mice as the experimental subjects. Subsequent investigation entailed the evaluation of antinociceptive and anti-inflammatory properties employing the acetic acid-induced writhing and carrageenan-induced paw oedema methodologies, respectively, in the same murine model. The findings of this study evince the safety of both aqueous and methanolic extracts, with LD50 values surpassing 2000 mg/kg body weight and the absence of discernible signs of toxicity. Furthermore, a notable dose-dependent (P<0.05) manifestation of analgesic effects was observed for both extracts, with the aqueous variant demonstrating heightened potency compared to its methanolic counterpart (P<0.05). Moreover, the anti-inflammatory efficacy escalated significantly with escalating extract doses and prolonged treatment duration (P<0.05), wherein the aqueous extract showcased superior effectiveness vis- à-vis the methanolic extract across all dosage regimens and temporal checkpoints (P<0.05). Therefore, this investigation underscores the latent promise of the examined extracts as reservoirs of safe and efficacious analgesic and anti-inflammatory agents, thereby meriting further meticulous exploration. Subsequent research endeavours ought to pivot towards elucidating the phytochemical constituents underpinning the observed effects, alongside unravelling their mechanistic underpinnings across a spectrum of animal models and clinical milieus.
Cluster mapping in Spain: Exploring the correlation between industrial agglomeration and regional performance
Authors: Fernández Escobedo Rudy , Eguía Peña Begoña , Aldaz Odriozola Leire
Published: April 2024

This paper presents a quantitative cluster mapping methodology for traded industries, adapted for the Spanish case; also explores the correlation between the existence of clusters and regional performance. e study is made at NUTS-2 level, and a total of forty-seven out of eighty-eight 2-digits codes for CNAE2009 are analyzed; ICT Index and Industry 4.0 Index are also designed and computed. A six-step methodology is applied departing from cross-industry linkages and implementing clustering algorithms; one set of clusters is elected and mapped over territory. The correlation analysis shows that a high number of clusters based on absolute employment data is positively correlated with variables associated with competitiveness, education, ICT adoption, and Industry 4.0, while no signiﬁcant correlation is found for GDP per capita nor earning per worker.
La distribución de los tiempos de espera de los hospitales públicos usando un enfoque GAMLSS el caso de Andalucía (España)
Authors: Caro Navarro Angela , De Haro-García Julia
Published: April 2024

Los tiempos de espera de los pacientes se deben al desequilibrio entre la oferta disponible y la demanda existente en el sector sanitario. Superar los tiempos máximos de espera puede empeorar las enfermedades y suponer costes adicionales para los sistemas de salud públicos. Este artículo estudia la distribución de probabilidad teórica que mejor se ajusta a los tiempos medios de espera para cirugías no urgentes y primeras consultas ambulatorias en los hospitales públicos españoles de la región de Andalucía. Para ello aplicamos Modelos Aditivos Generalizados de Ubicación, Escala y Forma, que cubren una amplia gama de distribuciones de probabilidad. Proponemos los modelos ﬁnales seleccionados como una herramienta a ser considerada por las autoridades sanitarias para una mejor gestión de los tiempos/listas de espera.
A new species of Otacilia Thorell, 1897 (Araneae, Phrurolithidae) from Yintiaoling National Nature Reserve, Chongqing, China
Authors: Zheng Changbin , Mu Yannan
Published: April 2024

Phrurolithidae is a family of spiders with 395 species belonging to 26 genera distributed worldwide, of which 205 species belong to 17 genera was recorded in China.

A new species of the genus Otacilia Thorell, 1897 is described from Yintiaoling National Nature Reserve, Chongqing, China. Diagnosis, morphological description, photos of the habitus and genitalia of the new species are provided.
Redescription and a significant range extension of Rhacophorus napoensis Li, Liu, Yu & Sun, 2022 (Amphibia, Anura, Rhacophorinae) with the first record from Vietnam
Authors: Nguyen Tan Van , Liu Shuo , Wilkinson Jeffery A. , Tran Thinh Gia , Tran Phuc Nguyen , Trofimets Alexey V. , Dau Vinh Quang , Poyarkov Nikolay A.
Published: April 2024

The Napo Treefrog Rhacophorus napoensis was described based on five male specimens from Napo County, Baise City, Guangxi Autonomous Region, China. Herein, we report on new findings and a range extension of this species based on an examination of preserved specimens collected from Bac Giang and Nghe An provinces, Vietnam. Futhermore, molecular analyses of specimens Rhacophorus spp. previously identified as R. rhodopus that were reported in Bac Giang, Nghe An as well as Thanh Hoa, and Ha Tinh provinces based on mitochondrial DNA supported the morphological findings. The Vietnam specimens have a pairwise divergence of less than 2% from those of the type series of Rhacophorus napoensis (based on the 16s rRNA mtDNA gene). Based on the new information, we confirm the presence of R. napoensis in Vietnam and update the diagnostic characters of this species and distribution. We suggest the species should be considered as of Least Concern (LC) following the IUCN’s Red List categories. Further studies reassessing the populations of the Rhacophorus bipunctatus complex are required.
Carex qingyuanensis (Cyperaceae), a new species from Guangdong, China
Authors: Li Ya-Li , Deng Shuang-Wen , Luo Jin-Chu , Li Ming-Xia , Zou Li-Ting , Zeng Qiu-Gen , Chen Hong-Feng
Published: April 2024

Carex qingyuanensis, a new species of Cyperaceae from Guangdong Province, China, is described and illustrated. The new species is morphologically similar to Carex peliosanthifolia F. T. Wang & Tang ex P. C. Li, but it can be distinguished by the racemose inflorescence branches appearing single (rarely binate or ternate) (vs. binate or ternate), one (rarely two or three) (vs. 1–3) spiked, male part of linear-cylindrical spikes much longer than the female part (vs. just male part short-cylindrical and slightly longer than female part), style base thickened (vs. not thickened) and perigynium horizontally patent with a short (vs. long and excurved) beak. Phylogenetic analysis, based on the two nuclear DNA regions (ETS 1f and ITS) and three chloroplast DNA regions (matK, ndhF and rps16), suggests that the new species belongs to sect. Siderostictaes.s. of subg. Siderosticta and shows a closer phylogenetic relationship to Carex scaposa C. B. Clarke.
Sulfated polysaccharides from marine diatoms: Insight into molecular characteristics and biological activity
Authors: Miranda-Arizmendi Valeria , Fimbres-Olivarria Diana , Miranda-Baeza Anselmo , Rascón-Chu Agustín , Marquez-Escalante Jorge , Lizardi-Mendoza Jaime , Méndez-Encinas Mayra A. , Carvajal-Millan Elizabeth
Published: April 2024

Marine algae are a valuable source of sulfated polysaccharides presenting varied structural characteristics and biological activities. Regarding sulfated polysaccharides extracted from marine microalgae, molecular characteristics and bioactivity have yet to be fully explored, especially in diatoms. Sulfated polysaccharides from marine diatoms have great potential to produce numerous health benefits and lead to new biomedical materials. Nevertheless, these potential applications are based on the polysaccharide molecular characteristics, which define their functional properties. Therefore, a detailed understanding of sulfated polysaccharides from marine diatoms may represent the starting point for a broad development of innovative applications, especially in the biomedical area. In this context, the present manuscript aims to review marine diatom sulfated polysaccharides' molecular characteristics and biological activity, looking for a more profound knowledge of these macromolecules and their potential applications.
Discordant relaxations of misspecified models
Authors: Li Lixiong , Kédagni Désiré , Mourifié Ismaël
Published: April 2024

In many set‐identified models, it is difficult to obtain a tractable characterization of the identified set. Therefore, researchers often rely on nonsharp identification conditions, and empirical results are often based on an outer set of the identified set. This practice is often viewed as conservative yet valid because an outer set is always a superset of the identified set. However, this paper shows that when the model is refuted by the data, two sets of nonsharp identification conditions derived from the same model could lead to disjoint outer sets and conflicting empirical results. We provide a sufficient condition for the existence of such discordancy, which covers models characterized by conditional moment inequalities and the Artstein (1983) inequalities. We also derive sufficient conditions for the nonexistence of discordant submodels, therefore providing a class of models for which constructing outer sets cannot lead to misleading interpretations. In the case of discordancy, we follow Masten and Poirier (2021) by developing a method to salvage misspecified models, but unlike them, we focus on discrete relaxations. We consider all minimum relaxations of a refuted model that restores data consistency. We find that the union of the identified sets of these minimum relaxations is robust to detectable misspecifications and has an intuitive empirical interpretation.
O trabalho uberizado de motoboys e bikeboys de aplicativos
Authors: Diniz Daniela Martins , Carvalho Neto Antônio , Costa Gabriel Resende
Published: April 2024

Há um crescente debate em torno da expansão do trabalho via plataformas digitais no Brasil e no mundo, sendo um deles o trabalho de delivery. Objetivando compreender os impactos da uberização nas relações de trabalho de motoboys e bikeboys de aplicativos, realizou-se uma pesquisa qualitativa envolvendo entrevistas com 24 trabalhadores. Os resultados do estudo evidenciaram o quão diferente são as relações de trabalho dos aplicativos de delivery em relação ao modelo de trabalho tradicional regido pela Consolidação das Leis do Trabalho, mostrando que a a uberização trouxe importantes rupturas. Por um lado, esse novo modelo de trabalho tem atraído jovens de baixa escolaridade motivados pela oportunidade de geração de renda, em paralelo com a aparente flexibilidade de horário e a possibilidade de exercerem outras atividades simultaneamente. Por outro lado, foram observadas características de um trabalho informal sem qualquer proteção e direitos legais, evidenciando uma precarização do trabalho no setor, corroborando a literatura. Esta precarização abrange desde a saúde ocupacional, passando pelos direitos inexistentes, até a remuneração destes trabalhadores, evidenciando, assim, a necessidade de fortalecimento da representatividade sindical dessa classe, até então pouco atuante, como os dados da pesquisa também revelaram.
MERCADOS FUTUROS NORTE-AMERICANO, EUROPEU E BRASILEIRO DE CAFÉ: EFICÁCIA DOS CANDLESTICKS NA SINALIZAÇÃO DOS PREÇOS
Authors: Oliveira Neto Odilon José de , Vitor Borges de Melo Matheus , Barbosa Josilene da Silva , Rezende Simone Oliveira
Published: April 2024

Este estudo teve por objetivo verificar a eficácia dos padrões altistas e baixistas de candlesticks na inflexão e na persistência da inflexão de preços do café nos mercados futuros norte-americano, europeu e brasileiro. A ocorrência dos padrões candlesticks foi estimada com base nas séries de preços diários de abertura, fechamento, máximo e mínimo do café dos mercados de derivativos da New York Board of Trade, da Brasil, Bolsa, Balcão e da Intercontinental Exchange Futures Europe, as quais foram obtidas junto à plataforma financeira investing.com. Verificaram-se as ocorrências de dezesseis padrões candlesticks altistas e baixistas e, em seguida, foi realizada a classificação dos indicadores de eficácia em três níveis (abaixo do aceitável, satisfatória e alta). Os resultados apontaram que seis padrões são eficazes em inflexão de preços (reversão do preço um dia após a ocorrência do padrão) em ambos os mercados e outros seis se mostraram eficazes em inflexão em apenas um dos mercados avaliados. Os resultados evidenciaram ainda que a maioria dos padrões candlesticks estudados apresentaram-se como eficazes em inflexão de preços nos mercados futuros de café europeu e brasileiro e, aproximadamente, um terço desses padrões foram eficazes no mercado norte-americano. No entanto, os padrões candlesticks são ineficazes em persistência de inflexão de preços nos três mercados estudados. Assim sendo, sugere-se que os padrões pesquisados sejam utilizados apenas para decisões com horizonte de um dia após sua ocorrência, não sendo indicado manter posição pós-inflexão quando, na prática, eles não permitem garantir lucratividade.
Comparative Evaluation of Efficacy of Herbal and Chlorhexidine Mouthwash on Gingival Health
Authors: Senkalvarayan Vaishnavi , Kesavan Priya , Dorairaj Jayachandran , Madhumala R , Ravi Saranyan , Tomy Ann Theresa
Published: April 2024

Introduction:

Chlorhexidine (CHX) is a chemical mouthwash that has been considered the gold standard, but has its drawbacks. When used for a longer duration, it produces taste alteration and staining on the tooth surfaces. Nowadays, herbal extracts from plants have been widely used as they possess anti-inflammatory, antimicrobial and analgesic actions.

Material and Methods:

A group of 45 healthy subjects in the age group of 19–35 years were selected and randomly divided into three groups, Group A - Himalaya complete care mouthwash, Group B - CHX mouthwash, Group C - Distilled water as a control group. Gingival index and plaque index, OHI-s index, and Ainamo and Bay index for bleeding were recorded. Subjects received complete supragingival scaling at baseline and were instructed to use 10 ml of mouthwashes twice a day in their group. Variables were again recorded on the seventh and 14th day after the use of mouthwashes, and data obtained was subjected to statistical analysis. Post
hoc and ANOVA tests were used for statistical analysis.

Results:

It was found that both CHX and herbal mouthwash proved to be more effective than placebo in maintaining gingival health. There was no significant difference between the test group on gingival health.

Conclusion:

Herbal mouthwash is an effective alternative to CHX mouthwash, in the light of the reported side effects of CHX mouthwash.
Clinical Outcomes of Titanium Zirconium and Titanium Dental Implants under Immediate Functional Loading in Posterior Mandibular Region
Authors: Verma Aditi , Agrawal Kaushal Kishor , Chand Pooran , Ramashanker  , Tripathi Shuchi , Arya Deeksha
Published: April 2024

Background:

Studies comparing the clinical performance of titanium zirconium (Ti-Zr) and titanium (Ti) dental implants subjected to immediate loading in the posterior mandibular region where occlusal forces are higher are sparse in the current literature. Hence, the study aimed to evaluate and compare the clinical outcomes of Ti-Zr and Ti dental implants under immediate functional loading in the mandibular posterior region.

Methods:

Forty participants fulfilling the predetermined selection criteria were randomly grouped based on dental implant used; Titanium zirconium (Ti-Zr):20, and Titanium (Ti):20. Dental implants were placed through a standard full-thickness mucoperiosteal flap approach and loaded immediately fulfilling the principle of implant protective occlusion. Clinical parameters including crestal bone loss (CBL), modified plaque index (MPI), probing depth (PD) and modified sulcular bleeding index (MSBI) were measured at baseline and follow-up visits (4, 8, and 12 months). Obtained data were compared with standard tests such as the t-test, Chi-square test, and Mann-Whitney U test.

Results:

On intergroup comparison, CBL was more in the Ti-Zr group as compared to the Ti group at 4 months (0.72 ± 0.16 mm versus 0.70 ± 0.13 mm), but it was less at 8 months (1.08 ± 0.16 mm versus 1.13 ± 0.13 mm) and 12 months (1.19 ± 0.17 mm versus 1.24 ± 0.12 mm) but the difference was not statistically significant (P > 0.05). Mann-Whitney test also revealed no statistically significant difference in MPI, PD and MSBI at 4 months, 8 months and 12 months recall (P > 0.05).

Conclusions:

CBL and periodontal parameters of Ti-Zr dental implants were found similar to Ti dental implants under immediate loading in the posterior mandibular region. However, further studies are needed to determine its long-term efficacy and cost-effectiveness.
Dens Evaginatus and Dens Invaginatus in Dilacerated Maxillary Lateral Incisor Diagnosed Using Cone Beam Computed Tomography - A Case Report and Review of Literature
Authors: Sawhney Hemant , Agarwal Vanshika , Gupta Geetanjali
Published: April 2024

Introduction:

Dens invaginatus (DI) and Dens evaginatus (DE), the developmental anomalies affecting the morphology of the tooth structure are extremely rare to occur. DI occurs because of invagination of a crown into dental papillae. DE is a tubercular emergence from occlusal surfaces of posterior teeth and lingual surfaces of anterior teeth. The two anomalies on separate teeth are frequently mentioned, but their co-occurrence in a single tooth is a rare entity.

Patient Concerns:

A 20-year-old male patient presented with the rare combination of DE and DI on a dilacerated maxillary right lateral incisor diagnosed using cone beam CT. Treatment: The patient was managed conservatively and is undergoing fixed orthodontic treatment for malocclusion. Despite its uniqueness, very few localized cases have been documented.

Take-away Lessons:

These anomalies act as an etiological factor for several dental problems for neighboring & opposing tooth. Early diagnosis of such anomalies should be done so that prophylactic management can be initiated.
Evaluation of Giomer Using Eighth Generation Bonding Agent and Resin-Modified Glass Ionomer Cement Restoration in Non-Carious Cervical Lesions
Authors: Bheda Rajvi , Mulay Sanjyot , Tandale Anita Sanap
Published: April 2024

Introduction:

Non-carious cervical lesions (NCCL) raise a considerable restorative challenge for the dentist in bonding, as adhesion is not as strong and predictable as enamel bonding. A critical factor for restorative success is the selection of restorative material. Clinicians have tried many restorative materials and techniques to obtain the best performance. The aim of the present study was to evaluate and compare the clinical outcome of a Giomer and Resin modified glass ionomer cement (RMGIC) restoration in NCCL using united states public health service (USPHS) criteria at baseline, 3, 6 and 12 months.

Materials and Method:

Patients from age 25 - 50 years having non-carious cervical lesions on both the sides and requiring restorations were screened. 20 patients were selected and further divided into 2 groups using simple random sampling technique. Group A- Beautifil II restoration using G-Premio bond (n = 10) and Group B- Ketac N100 restoration (n = 10). Restorations were done according to manufacturer's instructions and consequently evaluated at baseline, 3, 6 and 12 months using the USPHS criteria for marginal discolouration, marginal integrity, surface texture, colour match, gross fracture and post-operative sensitivity.

Results:

Giomer restorations showed better results than RMGIC. There was decrease in alpha ratings in both the study groups i.e., Giomer and RMGIC from 6 to 12 months.

Discussion:

The overall findings suggest that both Giomer and RMGIC gave satisfactory clinical results when used to restore non-carious cervical lesions. Both the materials can successfully be used since there was no statistically significant difference in the clinical outcome.
Efficacy of Frontal Sinus as a Reliable Tool for Sex Differentiation – A Cross-Sectional Study
Authors: Bhola Ridhi , Chatterjee Shreya , Kamboj Mala , Narwal Anjali , Devi Anju , Kukreja Manisha Kamal
Published: April 2024

Objective:

Gender determination is pivotal in establishing a biological profile of human remains, where fragments of the skull persist with unidentifiable dental arch data. Owing to the resistance and stability against external factors such as trauma and fractures, radiological assessment of the frontal sinus can be a useful indicator for sexual dimorphism. Keeping this in mind, a study was designed to analyse the efficacy of morphometric assessment of the frontal sinus for gender determination in the North Indian population.

Materials and Method:

A total of 300 (150 males and 150 females) lateral cephalograms of the age >20 years were retrieved. The frontal sinus index (ratio of maximum height to depth), area, and perimeter of the same were calculated using Adobe Photoshop software. The results obtained were further subjected to statistical analysis.

Result and Conclusion:

The study yielded an accuracy rate of 75.3% for sex differentiation. The frontal sinus perimeter was a novel parameter which was utilised as a variable in the obtained discriminant equation for sex differentiation. Thus, this cost-effective technique might be useful as an adjunct to assess sexual dimorphism.
Study of biomarkers p53, Ki-67, Bcl-2, and VEGF in pterygium
Authors: Ghosh Shilpa , Arora Ritu , Hariani Avani , Saran Ravindra , Jain Parul
Published: April 2024

Purpose:

To study the biomarkers present in primary pterygium samples of patients of Indian ethnicity and compare it with the samples obtained from the unaffected conjunctiva of the same eye.

Methods:

A prospective case-control study of 17 eyes in patients above 10 years of age with primary pterygium who underwent pterygium excision using limbal conjunctival autograft technique. The pterygium samples (cases) and conjunctival samples (controls) were sent for immunohistochemical (IHC) staining for the following biomarkers: p53, Bcl-2, Ki-67, and vascular endothelial growth factor (VEGF).

Result:

The immunohistochemistry of the samples and the controls revealed p53 positivity in 47.05% of pterygium samples and 29.4% of controls (P< 0.587). Nine cases each in pterygium and control samples were positive for Ki-67 expression. Differences in the staining pattern between the two groups were not statistically significant (P< 1.000). Bcl-2 positivity was seen in 10 pterygium samples (58.8%) and 12 controls (70.5%), with no statistical difference between the two groups (P< 0.455). VEGF expression was seen in both epithelial and endothelial cells of the samples and controls, with no statistical difference between the two groups, withP= 1.000 for the epithelial staining andP= 0.637 for endothelial staining.

Conclusion:

The expression of biomarkers was comparable in both groups. We conclude that pterygium, against common belief, might not be a localized disease process but a global ocular phenomenon where the apparently healthy tissue also has some ongoing disease process at a molecular level.
A practical model for effective eye care delivery in Southeast Asian rural communities: A proposal built based on experts’ recommendations
Authors: Liu Renee , Sule Ashita A , Shannon Choo Sheriel , Ravilla Thulasiraj , Taylor Hugh , Rojas-Carabali William , Khanna Rohit C , Mishra Chitaranjan , Sen Alok , Khatri Anadi , Tan Anna C S , Sobrin Lucia , Agrawal Rupesh
Published: April 2024

Purpose:

To evaluate rural community-based eye care models from the perspective of community ophthalmology experts and suggest sustainable technological solutions for enhancing rural eye care delivery.

Methods:

A semi-structured descriptive survey, using close-ended and open-ended questions, was administered to the experts in community ophthalmology sourced through purposive sampling. The survey was self-administered and was facilitated through online platforms or in-person meetings. Uniform questions were presented to all participants, irrespective of their roles.

Results:

Surveyed participants (n = 22 with 15 from India and 7 from Nepal) in high-volume tertiary eye hospitals faced challenges with resources and rural outreach. Participants had mixed satisfaction with pre-operative screening and theatre resources. Delayed presentations and inexperienced surgeons contributed to the surgery complications. Barriers to rural eye care included resource scarcity, funding disparities, and limited infrastructure. In rural/peri-urban areas 87% of participants agreed with providing primary eye care services, with more than 60% of the experts not in agreement with the makeshift center model of eye care delivery. Key components for an effective eye care model are sustainability, accessibility, affordability, and quality. These can be bolstered through a healthcare management platform and a human-chain supply distribution system.

Conclusion:

Tailored interventions are crucial for rural eye care, emphasizing the need for stronger human resources, optimized funding, and community awareness. Addressing challenges pertinent to delayed presentation and surgical training is vital to minimizing complications, especially with advanced cataracts. Enhancements in rural eye care demand a comprehensive approach prioritizing accessibility, affordability, and consistent quality.
Differences of ocular oscillations and neuro-retinal structures in patients with nystagmus caused by GPR143 and FRMD7 gene variants
Authors: Huang Lijuan , Xu Biru , Li Ningdong
Published: April 2024

Purpose:

Mutations of G protein-coupled receptor 143 (GPR143) and FERM domain containing 7 (FRMD7) may result in congenital nystagmus (CN) in the first 6 months of life. We aimed to compare the differences in ocular oscillations between patients with these two gene mutations as well as the functional and structural changes in their retinas and visual pathways.

Methods:

Medical records were retrospectively reviewed to identify patients of congenital nystagmus with confirmed mutations in either GPR143 or FMRD7 genes from January 2018 to May 2023. The parameters of the ocular oscillations were recorded using Eyelink 1000 Plus. The retinal structure and function were evaluated using optical coherence tomography and multi-focal electroretinography (mERG). The visual pathway and optical nerve projection were evaluated using visual evoked potentials. The next-generation sequencing technique was used to identify the pathogenic variations in the disease-causing genes for CN.

Results:

Twenty nystagmus patients of GPR143 and 21 patients of FMRD7 who had been confirmed by molecular testing between January 2018 and May 2023 were included. Foveal hypoplasia was detected only in patients with the GPR143 pathogenic variant. mERG examination showed a flat response topography in the GPR143 group compared to the FRMD7 group. VEP showed that bilateral amplitude inconsistency was detected only in the patients with GPR143 gene mutation. The amplitude and frequency of the ocular oscillations were not found to differ between patients with two different genetic mutations.

Conclusions:

Although the etiology and molecular mechanisms are completely different between CN patients, they may have similar ocular oscillations. A careful clinical examination and electrophysiological test will be helpful in making a differential diagnosis. Our novel identified variants will further expand the spectrum of the GPR143 and FRMD7 variants.