bluuebunny/crossref_metadata_2025 huggingface dataset:
nuevo paradigma de la economía circular.
Authors: Da Costa Pimenta Clayson Cosme
Published: December 2022

El propósito del artículo de revisión de la literatura sobre la economía circular en Colombia es doble: por un lado, pretendemos mostrar cuáles son las potencialidades que tiene dicho paradigma económico-social en América Latina y el Caribe en general y en Colombia en particular; por otro lado, buscamos analizar y comprobar hasta qué punto, basándonos para ello tanto en la literatura producida sobre el tema como en documentos oficiales nacionales e internacionales, el país latinoamericano ha avanzado en la senda de la circularidad y del desarrollo sostenible. La metodología seguida en el artículo de revisión se basa en el establecimiento claro de criterios de selección y búsqueda para la revisión bibliográfica sistemática y crítica de la literatura acerca de la cuestión. En cuanto a su estructura, el artículo de metaanálisis se organiza del siguiente modo: se expone un apartado introductorio donde se plantean el tema y el alcance de la investigación; seguidamente, se presenta un punto de desarrollo específico a propósito de la economía circular en Colombia; y, por último, se extraen unas conclusiones a partir de lo analizado, que incluye, además, la exposición de las limitaciones del análisis y unas líneas futuras de investigación.
“Helal Değildir/ لَا يَحِلُّ” Kalıbıyla Başlayan Hadis Metinleri Üzerine Lafız ve Anlam Eksenli Bir Analiz
Authors: Özüdoğru Bekir
Published: December 2022

Makale, لَا يَحِلُّ / helal değildir” ifadesi ile başlayan rivayetler özelinde hadis metinlerini konu edinir. “Helal değildir” şeklinde hukûkî bir lafızla başlayan hadis metinleri incelenmiş ve metin öğeleri araştırılmıştır. 23 farklı konudaki hadis metinlerinde söz konusu ifadeye rastlanmıştır. Rivayetlerin şâhid ve mütâbîlerinden hareketle metinler incelenmiştir. “Helal değildir” kalıbında nakledilen hadislerin çoğunun benzer kalıpta geldiği, sadece yasaklanan eylemlerin değiştiği görülmüştür. Rivayetlerin şâhid ve mütâbîlerinde anlamı bozmayacak lafız farklılıkları vardır. Lafız aynı olmasına rağmen lafzın delâleti konulara göre tahrim ve kerâhet gibi farklılık göstermiştir. Yine “helal değildir” lafızlarının bazı rivayetlerde Hz. Peygamber’e dayandığı bazısında ise manen rivayetin etkisiyle sahâbe ya da sonraki râvi tarafından ifade edildiği görülmektedir. Bundan dolayı hüküm ifade eden lafızlarda râvinin etkisi göz önünde bulundurulmalı ve sadece lafza göre değil de bütün rivayetleri bir arada değerlendirme ve kıyas gibi metotlarla göre hüküm verilmelidir.
Revision to Nomenclature of the Zarah Subgroup of the Kansas City Group (Pennsylvanian) in Kansas
Authors: Oborny Stephan , Smith Jon J. , Layzell Tony , Ludvigson Greg , Hasiuk Franek
Published: December 2022

This paper provides a summary review of proposed nomenclatural revisions to the Zarah Subgroup of the Kansas City Group (Pennsylvanian) in Kansas and outlines changes adopted by the Kansas Geological Survey. The Iola Limestone, which comprises in ascending order the Paola Limestone, Muncie Creek Shale, and Raytown Limestone Members, is now considered the basal formation of the Zarah Subgroup. We reinstate the overlying Liberty Memorial Shale as originally defined by Clair (1943) in the area of Kansas City, Missouri. We also restrict the Wyandotte Limestone to include only, in ascending order, the Frisbie Limestone, Quindaro Shale, and Argentine Limestone Members. Furthermore, the Lane Shale is restricted in use and encompasses all strata within the shale-dominated interval between the top of the Argentine Limestone Member of the Wyandotte Limestone and the base of the overlying Plattsburg Limestone. Within the revised Lane Shale, the KGS now formally recognizes, in ascending order, the Lower Farley Limestone, Middle Farley Shale, and Upper Farley Limestone Members. The Bonner Springs Shale is now demoted in rank and included as the uppermost member within the Lane Shale.
Convolutional modelling of epidemics
Authors: Alessandro Barducci
Published: December 2022

Traditional deterministic modeling of epidemics is usually based on a linear system of differential equations in which compartment transitions are proportional to their population, implicitly assuming an exponential process for leaving a compartment as happens in radioactive decay. Nonetheless, this assumption is quite unrealistic since it permits a class transition such as the passage from illness to recovery that does not depend on the time an individual got infected. This trouble significantly affects the time evolution of epidemy computed by these models. This paper describes a new deterministic epidemic model in which transitions among different population classes are described by a convolutional law connecting the input and output fluxes of each class. The new model guarantees that class changes always take place according to a realistic timing, which is defined by the impulse response function of that transition, avoiding model output fluxes by the exponential decay typical of previous models. The model contains five population compartments and can take into consideration healthy carriers and recovered-to-susceptible transition. The paper provides a complete mathematical description of the convolutional model and presents three sets of simulations that show its performance. A comparison with predictions of the SIR model is given. Outcomes of simulation of the COVID-19 pandemic are discussed which predicts the truly observed time changes of the dynamic case-fatality rate. The new model foresees the possibility of successive epidemic waves as well as the asymptotic instauration of a quasi-stationary regime of lower infection circulation that prevents a definite stopping of the epidemy. We show the existence of a quadrature function that formally solves the system of equations of the convolutive and the SIR models and whose asymptotic limit roughly matches the epidemic basic reproduction number.
Evaluation of seed morphology, seedling genetic variation, and components for seed storage of Agave landraces of commercial interest. v1
Authors: A Jimenez-Torres Jesus
Published: December 2022

Sexual propagation of Agave plants is an incipient cultivation method, these plants withstand drought and adverse growing conditions; therefore, research on Agave’s diversity, seed processing and storage, could support its cultivation on marginal lands. The aim of this work was to evaluate seed morphology, germination, and seedling genetic diversity of six seed origins (species*provenances) of Agaveplantscollected in five provenances from Mexico. Seed longevity was evaluated in two seed origins after a ten-year storage period. Seed morphology and seedling genetic variation results demonstrated intra- and interspecific variation within Agave salmiana and the other seed origins, respectively. After a ten-year storage period seed germination of two A. salmiana seed origins remained relatively stable, storage conditions and seed variables of this work can serve as reference parameters for future analyses. To the best authors’ knowledge this is the first report of Agave’s seed longevity evaluation after a ten-year storage period.
Performance of an Archimedes screw turbine with spiral configuration for hydrokinetic applications
Authors: Montilla-López Ana Isabel , Velásquez-García Laura Isabel , Betancour Johan , Rubio-Clemente Ainhoa , Chica-Arrieta Edwin Lenin
Published: December 2022

The performance of an Archimedes spiral turbine (AST) for hydrokinetic applications was examined using a three-dimensional unsteady numerical model utilizing the six degrees of freedom (6-DOF) solver that is available in ANSYs Fluent software. From the computational fluid dynamics (CFD) simulations, the power coefficient (Cp) curve was estimated. This curve was compared with the curve of an Archimedes screw hydrokinetic turbine (ASHT) reported in the literature. The ASHT was found to be more efficient than the AST for electricity generation. The highest value of Cp for the AST was 0.337, which is a relatively high value in comparison with that of other types of hydrokinetic turbines. The results calculated from the CFD for the AST were compared with an experimental study reported for wind applications.
Abordajes metodológicos y conceptuales en investigaciones sobre el conflicto armado colombiano y la ruralidad. Un análisis pertinente para la salud pública
Authors: Orozco Arcila Steven , Arenas Erika Alexandra , Sabogal Oquendo Luisa Fernanda , Meneses Mira Yeny Liseth , Correa Rangel Lizeth Yessenia , Vargas Sánchez María Natalia
Published: December 2022

Objetivo: Identificar los tipos de estudios realizados sobre el conflicto armado colombiano, sus campos interdisciplinares, métodos y técnicas, así como las concepciones acerca de conflicto armado y ruralidad utilizados en los mismos, y su pertinencia para la salud pública.
Metodología: En esta investigación, de índole cualitativa y metateórica, se efectuó una revisión narrativa, para lo cual se empleó un protocolo de búsqueda de artículos, con criterios de inclusión y exclusión. Se incluyeron artículos y trabajos de investigación existentes en bases de datos y repositorios institucionales, los cuales fueron sometidos a análisis de contenido.
Resultados: En su mayoría, los estudios analizados provienen de repositorios institucionales universitarios y, en términos disciplinares, surge de las ciencias sociales, humanas y políticas. Por consiguiente, los métodos investigativos utilizados son mayormente los acuñados en dichas disciplinas, como el etnográfico y las historias de vida, aunque se presentan métodos correlacionales y experimentales. Pocos trabajos utilizan referentes conceptuales o teóricos explícitos sobre el conflicto armado y la ruralidad, lo que genera inquietudes académicas, éticas y políticas respecto a las formas en que se comprenden y abordan las realidades en estos temas. De 101 trabajos analizados, solo 7 pertenecen el campo de la salud, y de estos, únicamente 1 al campo de la salud pública. Este hallazgo resulta notable, dados los múltiples efectos que ha generado el conflicto sobre la salud y la vida de diferentes grupos de la población colombiana.
Conclusión: Los efectos de la violencia, las guerras, los conflictos y sus efectos sobre la salud poblacional han sido objeto de interés de organismos internacionales y nacionales, y de algunos académicos del campo de la salud pública. Se hace necesario un mayor protagonismo de la salud pública frente a los efectos del conflicto colombiano sobre la población.
Uso de métodos anticonceptivos de alta eficacia posterior a la interrupción voluntaria del embarazo en Profamilia, 2015-2020
Authors: González Pérez Laura Andrea , Jaramillo Espinosa Laura Maria , Estrada Plata Daniela , Ruíz Vallejo Fernando
Published: December 2022

Objetivo: Describir los métodos anticonceptivos reportados por las usuarias de servicios de interrupción voluntaria del embarazo (ive), antes y posterior a la consulta, y explorar la asociación entre las características sociodemográficas y los antecedentes ginecológicos con la elección de anticonceptivos de alta eficacia posterior a la ive, con gestaciones menores de 15 semanas, en el departamento de Antioquia, Colombia, en la institución Profamilia, entre el 2015 y el 2020.
Metodología: Estudio de corte transversal. Se analizaron los 13 067 registros de consultas de ive realizadas en Profamilia de la regional Antioquia, del 2015 al 2020. Las variables cualitativas se midieron con frecuencias y porcentajes, y las cuantitativas, con la media y la desviación estándar. Se implementaron modelos de regresión logística para establecer la asociación de las variables independientes con la variable de interés.
Resultados: La consulta de ive contribuyó al incremento del uso de métodos anticonceptivos de alta eficacia. Antes de la ive, el 53 % de las mujeres no usaban ningún método. Posterior a la interrupción, el 97 % empezó a utilizar métodos de alta eficacia. Además del uso de métodos poco eficaces o el uso de preservativo, obtuvieron una posibilidad 13 veces más alta de elegir un método de alta eficacia.
Conclusiones: La educación en métodos anticonceptivos posterior a una ive es fundamental para promover el uso de opciones muy efectivas, con el fin de disminuir la aparición de nuevos embarazos no deseados que puedan llevar a una ive recurrente.
derecho a la educación en Argentina: excepción e (i) razonabilidad
Authors: Amaya Jorge Alejandro
Published: December 2022

El trabajo aborda la tensión constitucional de la restricción al derecho a la educación presencial en Argentina durante la pandemia del Covid-19, mediante decretos de emergencia dictados por el Poder Ejecutivo, invocando el derecho a la salud colectiva. Desde una mirada constitucional, se confronta la importancia de ambos derechos en el sistema argentino e interamericano; así como los requisitos constitucionales y jurisprudenciales de la Corte Suprema Argentina y de la Corte Interamericana de Derechos Humanos para la restricción de los derechos. La conclusión estriba en el hecho que, la reiteración a lo largo del año 2020 y 2021 de decretos de emergencia que impusieron la suspensión de las clases escolares, afecta tanto a la Constitución Nacional como a la Convención Americana de Derechos Humanos.
Reforma del sistema regional, protección de la salud y Tribunal Constitucional. La experiencia italiana a la luz de las revisiones constitucionales (1999/2001)
Authors: Gambino Silvio
Published: December 2022

El debate político-constitucional sobre el regionalismo italiano, especialmente en los últimos veinte años, se caracteriza por la consolidación de las necesidades de autonomía territorial (sobre todo, pero no sólo regional) de conformidad con el art. 5 y el Título V de la Constitución. En este marco, se reconstruyen las tendencias más recientes -y los problemas político-constitucionales conexos- que precedieron y acompañaron a las últimas reformas constitucionales, con especial atención a las relaciones entre autonomía regional, derechos fundamentales y principios constitucionales de unidad e indivisibilidad de la República. Las cuestiones de diferenciación territorial y los problemas conexos de distribución territorial de competencias (entre el Estado y las Regiones, así como entre las competencias exclusivas del Estado, concurrentes y residuales de las regiones), en esta perspectiva, se analizan con especial atención a los nuevos métodos de atribución autonómica de competencias en el campo de la protección de la salud y la asistencia social -ambos derechos fundamentales según la Constitución republicana- tal como se disciplinan de forma innovadora en las más recientes reformas constitucionales (1999/2001) y a la luz de la lectura del juez constitucional.
Género y delito
Authors: Pasculli Maria Antonella
Published: December 2022

En este estudio la autora revisa la naturaleza particular de la criminalidad femenina y propone un paradigma criminológico sobre la relación existente entre género y delito. El objetivo de esta investigación sobre la conducta criminal femenina es destacar las tendencias que se aprecian en la criminología presentando una perspectiva general de las teorías sobre dicha criminalidad, para de esta forma explicar la relevancia de la presencia femenina en delitos graves como el crimen organizado. La discusión ofrece un "método de investigación feminista" para estudiar la relación entre género y delito.
Blanqueo de capitales y regímenes de ciudadanía y residencia para inversores en la Unión Europea
Authors: Pavlidis Georgios
Published: December 2022

El reciente escándalo en la República de Chipre concerniente a los regímenes de ciudadanía para inversores (“pasaportes de oro”) y residencia para inversores (“visados de oro”) ha puesto de manifiesto temores relacionados al blanqueo de capitales. Este estudio examina críticamente los desarrollos y propuestas recientes para la regulación y supervisión de los regímenes de “pasaportes de oro” y “visados de oro” en la Unión Europea (UE). Si los regímenes en los Estados miembros de la UE no se terminan por completo como inherentemente defectuosos, entonces existe la necesidad de un enfoque integral común para la regulación y supervisión de tales programas. Se argumenta que los estándares del Grupo de Acción Financiera Internacional constituyen una respuesta apropiada para los riesgos de blanqueo de capitales que son asociados a tales planes de inversión, pero la UE tiene que introducir nuevas normas comunes, garantías y mecanismos de control a la luz del reciente escándalo en Chipre.
Avaliação da judicialização de medicamentos no setor público de saúde do Rio Grande do Sul de 2010 a 2019
Authors: Sanna Jorge Renan , Alves Amador Tânia
Published: December 2022

Objective: identify the ten most legally demanded medicines in the State of Rio Grande do Sul, Brazil, and study the evolution of expenditures related to the judicialization of medicines from 2010 to 2019, comparing the data with the implementation of public policies on medicines in Brazil during this period. Methods: this is a descriptive, retrospective, cross-sectional study using data from reports of the Medicines Management System of the Health Office and public data from the Transparency Portal, both from the State of Rio Grande do Sul. Results: tiotropium bromide 2.5 mcg topped the list of most frequently court-ordered medications and has topped this list every year since 2011. Citalopram 20 mg, venlafaxine 75 mg, and duloxetine 60 mg were the most frequently requested antidepressants, as were glucosamine sulfate 500 mg in association with chondroitin 400 mg, and rivaroxaban 20 mg. Antineoplastics were responsible for the largest state budget impact. Between 2010 and 2019, the State of Rio Grande do Sul’s expenditures increased by 773.1% due to the judicialization of pharmaceuticals. Conclusion: the phenomenon of judicialization of medicines in the State of Rio Grande do Sul has experienced significant growth during the period studied, and the adoption of public policies of pharmaceutical support does not seem to have affected access to medicines through judicialization.
Received: 06/03/20 | Accepted: 09/30/22
Ética e Direito da Saúde
Authors: Jair Schulze Clenio
Published: December 2022

Relationship between doctor and patient, measures to avoid the judicialization of health and medicine, and reflections on the qualification of the right to health. These and other issues are addressed in the text in order to create new scenarios for the future of humanity.
Received: 10/03/22 | Accepted: 10/06/22
Mathematical Model to Predict Split Tensile Strength of Concretes in Crude Oil Contaminated Environments
Authors:   Department of Civil Engineering, Faculty of Engineering, University of Nigeria, Nsukka, Ezihe J. C. , Ugwu O. O. ,   Department of Civil Engineering, Faculty of Engineering, Alex Ekwueme University, Ndufu Alike, Okafor F. O. ,   Department of Civil Engineering, Faculty of Engineering, University of Nigeria, Nsukka
Published: December 2022

Few concrete components used for constructions within the Niger Delta region of Nigeria are contaminated with crude oil to varying ranges. An investigation into the split tensile behaviour of concretes to crude oil when cured in 10% crude oil/water medium is carried out in this work. In this work, crude oil was used as a fifth ingredient of concrete mix which replaced 5% to 20% of the w/c. The four other components were cement, sand, granite, and water. A designed mix ratio of 1:2:4 with w/c of 0.5 was utilized as the initial component mix design. Scheffe’s simplex theory was used for the five mix ratios in a {5,2} experimental design. This gave rise to ten additional mix ratios and fifteen other additional mix ratios were generated for control purposes. These thirty concrete mix ratios were subjected to laboratory experiments to determine the 7 and 28 days split tensile strengths. The results of the first fifteen split tensile strengths were used for the calibration of the model constant coefficients, while the results from the second fifteen were used as control. A mathematical regression model was derived from the results, with which the split tensile strengths were developed. The derived model was subjected to a two-tailed t-test with 5% significance, which ascertained the model to be adequate with an R2 value of 0.9616 and 0.9227. The study revealed that crude oil presence in a concrete mix can be harmful as it reduces the split tensile strength of concretes.
Avaliação da comunicação para melhoria da qualidade da assistência à saúde em pediatria: estudo descritivo
Authors: Melo Francisca Raquel Monteiro de , Silva Bruna Vilar Soares da , Melo Evelin Beatriz Bezerra de , Dantas Joyce Karolayne dos Santos , Araújo Sara Cristina Matias de , Araújo Naryllenne Maciel de , Dantas Rodrigo Assis Neves , Dantas Daniele Vieira
Published: December 2022

Objetivo: avaliar a qualidade da comunicação escrita da equipe multiprofissional em uma Unidade de Dependentes de Ventilação Mecânica de um hospital público pediátrico. Métodos: pesquisa descritiva quantitativa, num Hospital Público Pediátrico, em quatro etapas: identificação e priorização de um problema de qualidade; análise das causas do problema; desenvolvimento de critérios para avaliar o nível de qualidade; avaliação do nível de qualidade. Resultados: 75,0% dos não cumprimentos de critérios são sobre registro da data e hora e a utilização do prontuário eletrônico pelos enfermeiros, médicos e técnicos de enfermagem. Os fisioterapeutas apresentaram 32,3% de descumprimento na identificação dos profissionais, os médicos tiveram 8,3%, os enfermeiros 68,3% e os técnicos de enfermagem 86,7%. Conclusões: foi observado ausência da data e hora nos registros dos médicos e da enfermagem, baixa adesão dos médicos na evolução noturna no prontuário eletrônico, e limitação no acesso e utilização desse sistema pela equipe de enfermagem.
Henri Michaux y el doble en su pintura
Authors: Biondi Valeria
Published: December 2022

Este artículo intenta definir el doble en la pintura de Henri Michaux. El análisis considera dos características principales. La primera es la pre-identidad, o sea el valor originario que el autor pretende rescatar a partir de la identidad verdadera y vinculada a la construcción social. La segunda es la necesidad de investigar sobre lo inconsciente, para poder encontrar aquellas presencias que viven en nosotros y que podemos definir con el término “alteridad”. A partir de estos conceptos, se analiza la pintura de Michaux, destacando en esas cabezas desconocidas que, muchas veces, se manifiestan en la obra bajo la forma de una silenciosa muchedumbre.
¿La revolución puede esperar? El PRV en los debates y acciones de los exiliados venezolanos (1927-1929)
Authors: Correa Pérez Pedro David
Published: December 2022

Este artículo analiza las posturas del Partido Revolucionario Venezolano (PRV) en el debate y las conspiraciones que se sucedieron a lo interno del exilio venezolano entre 1927-1929. Los objetivos del texto son: identificar las distintas posiciones que surgieron entre los exiliados venezolanos en este periodo; analizar los argumentos presentados por los militantes del PRV en esta discusión y explicar las implicaciones de estas posiciones en los eventos liderados por los exiliados en contra de la dictadura en 1929. Del trabajo se desprende la importancia del PRV en las definiciones ideológicas del exilio venezolano y las tensiones con las redes que el partido había construido. De manera general, este trabajo ayuda a entender las dinámicas de México como lugar de refugio en la década de 1920. A partir de este estudio se hace una crítica al esquema y la periodización sobre la oposición al gomecismo propuestas por el historiador Manuel Caballero.
Micromorphological features of medieval cultural layers formed in different environmental backgrounds
Authors: Bronnikova Maria A. , Karpova Julia O. , Murasheva Veronika V. , Kochkina Anna F. , Stashenkov Dmitry A. , Arzhantseva Irina A. , Härke Heinrich
Published: December 2022

This research compares results of micromorphological case studies conducted on four early medieval archaeological sites with differentiated spatialization of human impacts and a varied craft production located in different background environments: humid climate, subzone of mixed forests, floodplain of the Dnieper River (Gnezdovo site); semi-humid climate, subzone of forest-steppe, Middle Volga region (Muromsky Gorodok and Malaya Ryazan’ sites); arid climate, cold desert of the Aral region, ancient delta-alluvial plain of the Syr-Darya River (Dzhankent site). Micromorphological studies of habitation deposits revealed clear geographical and geochemical regularities in the occurrence of geogenic (soil, sedimentary and post-sedimentary) features. Intrasoil migration and accumulation of clay and coarser silicate material in textural pedofeatures were described in cultural layers of sites located in forest and the forest-steppe zones. An anthropogenic input of phosphates provokes simultaneous migration and illuvial accumulation of phosphates and clay. In the habitation deposits in steppe landscapes with calcareous lithology, the key background soil process is redistribution and intrasoil accumulation of calcium carbonates. In the alluvial desert landscape, major soil processes are accumulation of gypsum and readily soluble salts. All layers are or were affected by at least some seasonal over-moisturizing that resulted in a variety of redoximorphic features depending on their palaeo- and/or contemporary water regime. The high variety of anthropogenic processes and corresponding microfeatures was grouped as follows: (1) input, output, turbation, compaction; (2) neoformation and migration; (3) pyrogenic processes (products); technological processes (products). The set of anthropogenic features records past human impact in the locality. The higher the variety of anthropogenic features and their general abundance is, the more intensive and variable the human impact which had occurred in the past. At the same time, the occurrence of certain anthropogenic features may indicate not only human-related processes of their formation (or input), but also a contemporary soil environment. This environment can be favorable, or, in the opposite, deteriorative for earlier formed anthropogenic features.
Environmental variation in the early and middle Holocene Tequendama and Aguazuque archaeological sites, Colombia
Authors: Triana Vega Angélica Viviana , Pérez Crespo Víctor Adrián
Published: December 2022

This study focuses on identifying possible environmental variations and plant availability during the occupation in two archaeological sites: Tequendama and Aguazuque, located in Sabana de Bogotá, Colombia. Those sites represent periods of occupation during the early to middle Holocene that contributes valuable information about hunter-gatherers who occupied this area. Data obtained and recovered archaeological material during excavations shed light on relatively continuous occupations until the late Holocene. The presence of lithic artefacts, human and fauna bone remains offered relevant information to comprehend social dynamics among these human groups; likewise, phytolith and stable isotope analysis on sediments and fauna were carried out to identify environmental variations, and the presence of plant remains in these archaeological contexts. Carbon isotope analysis in sediments indicated the prevalence of plants C3 from the early Holocene. In turn, isotopic relationships in carbon obtained from mammals’ dental enamel found in both sites suggest that those animals consumed such types of plants. Also, isotopic values in oxygen from dental enamel show humid and possibly cold environmental conditions in both locations. Also, phytolith analyses provide evidence on the types of plants available in determined contexts and reconstruct environments, use, and availability. Those three types of analysis were applied to archaeological contexts to determine the presence of plants type C3 or C4 available in the sites, which permitted to evidence of environmental changes, humid conditions, and, in a few cases, drought across occupation, as well as the differences in terms of the presence or absence of certain types of plants during chronological periods, suggesting a possible association of horticultural processes and domestication during middle Holocene in Aguazuque archaeological site.
A LiDAR-based geopedologic approach to address pre-Hispanic agricultural landscapes in Northern Michoacán, West Mexico
Authors: Dorison Antoine , Siebe Grabach Christina , Elliott Michelle , Pereira Gregory
Published: December 2022

The methodical exploitation of arable lands in pre-Hispanic Mesoamerica has been recognized since the 16th century, but the Spanish Conquest caused cultivated landscapes to be dramatically modified. Thus, general amazement remains great when remote sensing techniques (RS) like airborne laser scanning (LiDAR) uncover fossilized farmlands. Recent studies demonstrated that agrarian features are widespread among the remains revealed by LiDAR-derived models. Efforts are being made to map these features but few studies have focused directly on the landforms and soils which they modify. Concurrently, while paleopedology has refined the identification of anthropogenic features within soils, spatial approaches correlating soil covers and archaeological sites have received less attention as perspectives often diverge between archaeological mapping, which often focuses on intra-site elements, and soil mapping, which generally encompasses broader areas. Yet, geoscientists have used RS to predict soil parameters and demonstrated that it could increase accuracy in knowledge-based soil maps. Today, while LiDAR-derived data are facilitating archaeological mapping beyond settlement limits, high-resolution RS also offers opportunities for more accurate soil mapping and calls for harmonization of perspectives. We present a method that combines LiDAR-based RS and fieldwork in archaeology and soil science to address pre-Hispanic cultivated landscapes based on a case study in West Mexico. It focuses on the Zacapu area, where long-lasting archaeological and geoecological research offered a solid background. We used LiDAR visualizations, modeling, and satellite images to detect anthropogenic and geopedologic features. The latter was verified through field surveys and test pits. Archaeological material and soil analyses followed. All data were mapped on GIS. As a result, we were able to update and improve significantly both the archaeological and geopedologic maps. The approach further provided an unprecedented reconstruction of landscape appropriation from the 6th to the 15th century AD. It demonstrates that archaeology, geomorphology, and pedology can efficiently complete each other to address more comprehensively pre-Hispanic cultivated landscapes.
Simulator for Scheduling Real-Time Systems with Reduced Power Consumption
Authors: Al-Fareed Hakeem , Alghamdi Omar , Alshuraya Abdulaziz , Alqahtani Majed , Alwasfer Saud , Aljomea Ahmed , Rahman Atta-ur , Aljameel Sumayh , Krishnasamy Gomathi
Published: December 2022

Optimum resources utilization in computing devices especially power is among the prime areas of research from the very beginning of computer systems. However, its importance in the current era has been significantly increased due to the diverse nature of devices and their real time applications. On the other hand, paradigm is shifting towards sustainable resources that are green/environment friendly (low emission) in nature and produce relatively low energy/power. Real time systems (RTS) are relatively power-hungry due to their time constrained nature. So, there is room to investigate the scheduling algorithms (schedulers) with minimum (low) power consumption. On the other hand simulators are the software that mimic the real time environment for various parameter testing without actual implementation that could be costly as well as complex to build in the beginning. In this study, we are intended to develop a simulator for scheduling Real-Time Systems (RTS) with Reduced Power Consumptions (RPC). That is potentially an environment where various algorithms can be tested over different case studies to examine their performance pertaining RPC for RTS.
A Low Cost Electronic Nose System for Classification of Gayo Arabica Coffee Roasting Levels Using Stepwise Linear Discriminant and K-Nearest Neighbor
Authors: Nasution Indera Sakti , Delima Dian Putri , Zaidiyah Zaidiyah , Fadhil Rahmat
Published: December 2022

A low-cost electronic nose (E-Nose) system using metal oxide sensor (MOS) was developed for Gayo arabica coffee roasting level. The developed electronic nose was designed to have a simple, rapid detection, as wells as provides reliable results. The E-Nose system is equipped with MOS sensors, sensor chamber, microcontroller, computer, and data acquisition system. The level of coffee roasting was monitored by read the data from the sensors continuously in real time every second. The sensor signals were recorded in Excel file using data acquisition system and analysed using both stepwise linear discrimination and k-nearest neighbor classifiers. A high percentage (91.67%) of accuracy was obtained using stepwise linear discrimination method. Furthermore, k-nearest neighbor classifier using city block distance demonstrated higher accuracy than stepwise linear discrimination classifier. The results showed that the electronic nose system has a potential for assessing Gayo arabica coffee roasting level. The study confirmed that the proposed electronic nose equipped with at least two MOS sensors was suitable for monitoring the level of coffee roasting level. The result could be used for evaluating other varieties of roasted coffee.
Analytical Procedure for the Flow of a Carreau-Yasuda Fluid Through the Diseased Tapered Inclined Artery Subject to Heat Transfer and Chemical Reactions
Authors: El Kot Mahmoud Abdallah
Published: December 2022

This paper demonstrates the implications of heat transfer and chemical reactions by considering the flow of a Carreau-Yasuda fluid through the diseased tapered inclined artery. The analysis has performed on the artery with mild stenosis. The analytical solution has been obtained using the perturbation method due to its low Weissenberg number to get the blood velocity, the wall shear stress distribution, the temperature, the concentration, the resistance impedance and the stream function. The critical results in this study have depicted that the blood velocity for dilatant fluid is higher than that in viscous and pseudoplastic fluids in the core region of the artery. The value of blood velocity through a Newtonian fluid is extraordinarily lower than that through a Carreau-Yasuda fluid at the core region of the artery. The magnitude of blood velocity across the vertical artery is higher than those in the inclined and horizontal arteries inside the core region of the artery. The wall shear stress distributions are higher in the case of stenosis (diseased artery) than in no stenosis (healthy artery). The temperature transmission for the Carreau fluid is higher than that for the Carreau-Yasuda fluid. The flow resistance progressively increases as the depth of the stenosis increases. The size of the trapping bolus gradually increases, shifting toward the right at the diverging tapering artery, and it gradually increases, moving toward the left at the converging tapering artery. Finally, the streamlines are noticeably more comprehensive along the vertical artery and are higher than those in the inclined and horizontal arteries.
Augmentation of Plate-Fin Heat Exchanger Performance with Support of Various Types of Fin Configurations
Authors: Abbas Ali Sabri , Mohammed Ayad Ali
Published: December 2022

A plate fin heat exchanger PFHE is a form of compact heat exchanger CHE containing of a block of alternating layers of fins and flat separators known as parting sheets. In this paper, 3-dimensional incompressible laminar flow and heat transfer in a (PFHE) has been investigated numerically. The influences using different fin configurations and the effect of the offset of these fins, on thermal and hydro-dynamic fields are presented. The cases of study for the PFHE are established, by using the fins with different configurations (plain rectangular (PR) and it's offset (OR), plain triangular (PT) and it's offset (OT) which is a novel shape, and a novel combination of a two fin shapes, between rectangular and triangular (ORT)). The upper and lower plates are exposed to a constant heat flux and the working fluid is air where chosen under a laminar range of (Re) number (600 to 1400). The laminar flow and heat transfer is governed by continuity, momentum and energy equations. ANSYS FLUENT (2021 R1) is used to get the numerical results, based on finite volume method. One of the most utilized fins for a PFHE is the offset fin arrangement due to its higher heat change amount, adjustable structure, and enhances flow turbulence and heat transfer coefficient by interrupting the thermal boundary layer. The obtained results of using of the offset configuration increases the Nusselt number by 20.32% and 17.82% for OSF rectangular and OSF triangular, respectively as compared with the with plain configurations, as a result, a significant heat transfer enhancement is observed. And significant increase in the friction-factor is found to be 79.8% and 48.7% for OT and ORT, as compared with the PT. It can be observed that use of the OSF configuration leads to greater f-factor for triangular configuration values. In addition, the temperature fields for the primary and secondary flows were showed in a contour diagram.
Natural cycle versus modified natural cycle for endometrial preparation in women undergoing frozen-thawed embryo transfer: An RCT
Authors: Farid Mojtahedi Maryam , Aref Saeedeh , Moini Ashraf , Maleki-Hajiagha Arezoo , Kashani Ladan
Published: December 2022

Background: Studies have evaluated different endometrial preparation methods, but the optimal frozen-thawed embryo transfer (FET) cycle strategy in terms of the in-vitro fertilization outcome is still debated.
Objective: To compare the natural versus modified natural cycles for endometrial preparation in women undergoing FET.
Materials and Methods: This study was designed as a randomized clinical trial, and it was performed at the Arash women’s hospital between August 2016-2018. Hundred and forty eligible participants were enrolled in this study and were randomly divided into 2 groups by using the block randomization method, including true natural FET (n = 70) and modified natural FET (mNFET) (n = 70) cycles. Both groups were monitored for endometrial thickness and follicular size; simultaneously spontaneous luteinizing hormone surge using urinary luteinizing hormone testing kits. The mNFET group received 5000 IU of human chorionic gonadotropin injection to trigger final follicular maturation. Luteal support by vaginal progesterone (cyclogest 400 mg twice daily) was used in true natural FET from the day of transfer until the 10th wk of pregnancy. Chemical and clinical pregnancy and abortion rates were considered as the primary outcomes.
Results: There were no differences in the participants’ baseline characteristics between groups. There was no difference in clinical pregnancy and abortion rate between the 2 groups, while the implantation rate was significantly higher in the mNFET group (29.2% vs. 17.6%; p = 0.036).
Conclusion: The results demonstrated that both types of natural cycles were similar in pregnancy outcomes, while modified cycles might be associated with a higher implantation rate.
Key words: Embryo transfer, In vitro fertilization, Pregnancy rate, Live birth, Human chorionic gonadotropin.
The effect of aging on semen parameters in normozoospermic men: A cross-sectional study
Authors: Ulubay Mahmut , Bahaettin Muhammet , Akdeniz Ekrem
Published: December 2022

Background: Semen parameters change with age and are reported differently worldwide.
Objective: This retrospective cross-sectional study aimed to investigate the semen quality pattern among aging men and the age thresholds for semen parameters.
Materials and Methods: The records of men who had normal semen parameters from January 2015-June 2020 were retrospectively evaluated for andrological outpatient at Samsun Training and Research hospital and Gazi hospital in Samsun, Turkey. Adult men meeting the inclusion criteria were divided into 3 groups of I) 18-29 yr (n = 629), II) 30-39 yr (n = 775), and III) 40-49 yr (n = 190). Correlations between age and sperm parameters were then analyzed.
Results: A total of 1594 men were enrolled in the study. Significant differences were observed in total sperm numbers, total motility rates, progressive motility rates, nonprogressive motility rates, normal morphology rates, mean semen volume, and sperm concentrations. The parameters of total sperm number, progressive motility rate, and normal morphology rate were significantly higher in group I than in the other 2 groups (p < 0.001, p < 0.001, and p < 0.001, respectively) and in group II compared to group III (p = 0.001, p = 0.003, and p < 0.001), respectively. Mean semen volume and total motility rate were significantly higher in group I than in the other groups (p = 0.001 and p < 0.001, respectively). However, no difference was observed between group II and group III (p = 0.61 and p = 0.04, respectively).
Conclusion: Age has a significant impact on semen parameters capable of affecting male fertility, particularly total sperm numbers, the progressive motility rate, and the normal morphology rate.
Key words: Age, Fertility, Semen, Semen quality.
The effects of melatonin and metformin on histological characteristics of the ovary and uterus in letrozole-induced polycystic ovarian syndrome mice: A stereological study
Authors: Lohrasbi Parvin , Karbalay-Doust Saied , Bagher Tabei Seyed Mohammad , Azarpira Negar , Alaee Sanaz , Rafiee Bahare , Bahmanpour Soghra
Published: December 2022

Background: Polycystic ovarian syndrome (PCOS) with anovulation, hyperandrogenism, ovarian and uterine histological changes, menstrual irregularities, etc. signs is an infertility type. It seems that melatonin and metformin can improve these abnormalities.
Objective: To evaluate the effects of melatonin and metformin on the ovary and uterus in PCOS-induced mice using stereological methods.
Materials and Methods: Seventy-two adult female BALB/c mice (8-wk-old, 20-30 gr) were randomly divided into control (distilled water, gavage), PCOS (90 μg/kg letrozole, gavage), PCOS+metformin (500 mg/kg, gavage), PCOS+melatonin (10 mg/kg, intraperitoneal injection), and PCOS+melatonin control (0.5% ethanol saline) groups (n = 12/each). Another PCOS group was kept for a month to ensure that PCOS features remained. Finally, a stereological evaluation of the uterus and ovary was carried out, and vaginal cytology and serum testosterone levels were assessed.
Results: PCOS mice treated with metformin and melatonin had lower testosterone levels, body weight, and more regular estrus cycles than the PCOS group (p ≤ 0.001). A significant decrease in conglomerate and daughter gland numbers, and primary, secondary, atretic, and cystic follicles numbers with a significant increase in primordial and Graafian follicles, and corpus luteum numbers (p ≤ 0.001) was seen in these treated mice. Also, endometrial vessels’ volume and length significantly increased, but ovarian, endometrial, myometrial, stromal, and glands volume, and endometrial and myometrial thickness dramatically declined (p ≤ 0.001).
Conclusion: It appears that metformin and melatonin could restore the PCOS phenotype including estrus cycle irregularity, high testosterone level, and ovarian and uterine micromorphology to the control levels. However, the 2 treatments had similar effects on the examined parameters.
Key words: Polycystic ovarian syndrome, Melatonin, Metformin, Ovary, Uterus, Mice, Stereology.
Knowledge, Attitude and Practices Regarding Menstrual Cup among Females in an Urban Setting of South Kerala
Authors: Sudevan Devan Gayathri Mallika , Mohanan Gayathri , Ajitha Gowri Krishna , Kavitha Haripriya , Majeed Ijaz , Kesavan Nair Anjana Nalinakumari
Published: December 2022

Objective: This study aims to assess the knowledge, attitude, and practices regarding menstrual cups use and the factors associated with it among females of the reproductive age group in an urban setting of South Kerala.
Materials and methods: We conducted a cross-sectional study from December 2021 to January 2022 among females of the reproductive age group. Data was entered in MS Excel and was analyzed using Statistical Package for Social Sciences version 26.0. The significance of association was tested using the Chi-square test. Binary logistic regression was done to predict the factors associated with knowledge levels regarding menstrual cup.
Results: The mean age of study participants was 25.68(SD 6.64) years. Lack of knowledge (22.6%) and fear of insertion (56.2%) were the major reasons for not trying a menstrual cup.  Out of the 350 study participants, 258(73.7%) had good knowledge scores and 92(26.3%) had poor knowledge scores. Discomfort and leakage were the most important problems reported by participants.  A statistically significant association was found between younger age, educational status, socioeconomic, status, marital status of females in the reproductive age group, and knowledge about the menstrual cup.
Conclusion: Most of the participants (93.4%) were aware of menstrual cups. Even though two third of the participants had good knowledge regarding menstrual cups, only 15.1% have tried to use a menstrual cup. Fear of insertion was the most common concern for not trying a menstrual cup. Discomfort and leakage were the most important problems reported by participants. Younger age and higher educational qualifications were found to be independently associated with knowledge levels regarding menstrual cups.
Examining the Effect of Chamomile on Clinical Symptoms and Hormonal Parameters Among Patients with Polycystic Ovarian Syndrome
Authors: Afiat Malihe , Akbari Lor Azam , Najafi Mona Najaf , Ghazanfarpour Masumeh , Jafarabadi Mina
Published: December 2022

Objective: Polycystic ovarian syndrome is the most common cause of infertility and endocrine disorder among women due to anovulation. The aim of the present study is to investigate the effect of chamomile on oligomenorrhea and hirsutism symptoms as well as hormonal parameters among patients suffering from polycystic ovarian syndrome.
Materials and methods: The present study is a randomized clinical trial performed on 70 patients with diagnosis of polycystic ovarian syndrome according to Rotterdam criteria referring to the infertility clinic of a university hospital. The patients were randomly assigned into intervention and control groups, with the former receiving two chamomile capsules 500 mg for three months, and the latter receiving two placebo capsules for 3 months. Both groups were evaluated in terms of laboratory parameters (FBS, LDL, and testosterone) on the third day of first and third cycles. The collected data were analyzed by SPSS 20.
Results: The mean age, body mass index, marital status, history of infertility, and pregnancy rate showed no significant difference between the two groups. In the chamomile group, clinical symptoms of hirsutism (p<0.001) and oligomenorrhea (p=0.048) decreased following the treatment, but significant difference was found between the two groups only in hirsutism symptoms (p=0.028). Regarding the parameters of FBS (p=0.06), HDL (p=0.224), cholesterol (p=0.99), triglyceride (p=0.106), testosterone (p=0.894), and LDL (p=0.61), no significant difference was observed between the two groups. Nevertheless, following the treatment, testosterone decreased in both placebo (p=0.005) and chamomile (p=0.001) groups.
Conclusion: overall, the chamomile therapeutic regimen has relatively been able to mitigate the clinical symptoms and testosterone levels in patients suffering from polycystic ovarian syndrome. Use of chamomile plant as a simple, inexpensive, and effective measure can be suggested for improving and treating patients with PCOS after confirmation by further studies.