Resumen Introducción y objetivos: Las briófitas conforman el segundo grupo de plantas terrestres más diverso, colonizando una gran variedad de ecosistemas y cumpliendo múltiples funciones en el mismo. En este trabajo se da a conocer una lista de briófitas identificadas en la localidad de Arroyo Leyes (Santa Fe, Argentina), con el objetivo de incrementar la información acerca de las especies presentes en la provincia. M&M: La selección del área de estudio se debió a que es parte de una zona en proceso de transformación acelerada, esto implica una pérdida o alteración de hábitats naturales que generan a su vez la desaparición de especies, por lo cual es prioritaria la realización de tareas de conservación. Los especímenes se colectaron durante los meses de septiembre-noviembre de 2019-2021. El análisis de las muestras se llevó a cabo siguiendo las técnicas convencionales para las briófitas y se realizó su identificación mediante el uso de claves. Los especímenes fueron depositados en el herbario del Museo Provincial de Ciencias Naturales Florentino Ameghino (MFA). Resultados: Se identificaron un total de 21 especies pertenecientes a 18 géneros y 13 familias. Amblystegium varium, Didymodon australasiae, Dimerodontium pellucidum, Forsstroemia coronata y Philonotis uncinata representan nuevos registros para la provincia de Santa Fe. Conclusiones: Se logra, mediante este estudio, la incorporación de cinco nuevas especies a la flora briofítica de Santa Fe, ampliando el conocimiento a nivel provincial.

Summary Background and aims: Bryophytes are the second most diverse group of terrestrial plants, colonizing a wide variety of ecosystems and undertaking multiple functions in them. In this work, a list of bryophytes identified in the locality of Leyes stream (Santa Fe, Argentina) is disclosed with the objective of increasing the information about the species present in the province. M&M: The study area was selected due to the fact that it is part of an area facing accelerated transformation. This implies a loss or an alteration of natural habitats, that in turn generate the disappearance of species, for which the implementation of conservation tasks is a priority. The specimens were collected during the months of September-November 2019-2021. The study of the samples was carried out following the conventional techniques for bryophytes and identified by using keys. Specimens were deposited at the herbarium of the Florentino Ameghino Provincial Museum of Natural Sciences (MFA). Results: A total of 21 species belonging to 18 genera and 13 families were identified. Amblystegium varium, Didymodon australasiae, Dimerodontium pellucidum, Forsstroemia coronata and Philonotis uncinata represent new records for Santa Fe province. Conclusions: Through this study, five new species are added to the bryophyte flora of Santa Fe, expanding its knowledge in the province.

Abstract Alvarez, D. J.; M. S. Jimenez, R. H. Zander & G. M. Suárez. 2023. First record of Anaschisma lilliputanum (Pottiaceae, Bryophyta) in Argentina. Darwiniana, nueva serie 11(1): 23-30. The genus Anaschisma includes four species in America, of which, A. lilliputanum is recorded for the first time to the Argentina. The specimens were analyzed morphologically using conventional techniques for Pottiaceae (Bryophyta). A distribution map of the genus, description and illustration in SEM and LM of the species are provided. Comments and differences between this taxon and A. schiavoneae from Argentina are presented.

Resumen Alvarez, D. J.; M. S. Jimenez, R. H. Zander & G. M. Suárez. 2023. Primer registro de Anaschisma lilliputanum (Pottiaceae, Bryophyta) para la Argentina. Darwiniana, nueva serie 11(1): 23-30. Anaschisma es un género que incluye cuatro especies americanas, de las cuales, A. lilliputanum se registra por primera vez para la Argentina. El análisis morfológico de los ejemplares fue realizado por métodos convencionales para el estudio de las Pottiaceae. Se provee un mapa de distribución del género, una descripción e ilustraciones en MEB y MO de la especie. Se comentan las diferencias con A. schiavoneae presente en la Argentina.

Abstract Introduction Intussusceptions in adults are rare, representing 1% to 5% of intestinal obstructions in this age group. This condition can be caused by benign and malignant lesions acting as lead points, the latter being the most frequent. Furthermore, the diagnosis is challenging due to the non-specific symptoms with variable duration. Case Presentation A 43-year-old man, with a history of localized clear-cell renal carcinoma (ccRCC) treated 9 years earlier with a right radical nephrectomy, presented with bowel obstruction symptoms. An abdominal computed tomography scan showed an ileocolonic intussusception. Hence, the patient required a right hemicolectomy with ileotransverse anastomosis. The histopathological analysis showed a metastatic ccRC to the terminal ileum causing the intussusception. Discussion Adult intussusceptions are rare. However, they should be considered in the differential diagnosis of patients with abdominal pain and symptoms of bowel obstruction. Metastases of renal cancer to the small bowel are uncommon and even more so in the form of intussusception. Definitive treatment must be tailored to the patient's condition and underlying cause.

Resumen Introducción y objetivos: El cambio climático, el ganado y el creciente uso turístico favorecen la dispersión de plantas exóticas, amenazando la conservación de los ecosistemas altoandinos. Estudiamos los patrones de distribución de plantas nativas y exóticas en senderos recreativos de montaña. M&M: Implementamos el protocolo MIREN en seis senderos (2400-3600 m s.n.m.) en dos áreas protegidas de los Andes centrales de Mendoza en las Cordilleras Frontal y Principal. Resultados: Encontramos 180 especies nativas y 41 exóticas. La riqueza de especies nativas fue máxima a elevaciones intermedias, mientras que la riqueza de exóticas disminuyó con la elevación. La riqueza regional de nativas fue mayor en la Cordillera Frontal que en la Principal (114 versus 71 nativas, respectivamente) mientras que la riqueza regional de exóticas fue menor en la Frontal que en la Principal (20 versus 28 exóticas, respectivamente). La riqueza de exóticas por parcela fue mayor en la Cordillera Frontal que en la Principal. El rango de distribución altitudinal de exóticas fue mayor en la Cordillera Frontal. Dos exóticas abundantes, Taraxacum officinale y Cerastium arvense, estuvieron a lo largo de todo el gradiente en la Cordillera Frontal, alcanzando los 3600 m s.n.m. Encontramos siete exóticas no citadas anteriormente. Conclusiones: Los nuevos registros amplían los rangos de distribución conocidos para algunas especies exóticas. A pesar de que el número de especies exóticas fue similar cerca y lejos de los senderos, cinco especies sólo estuvieron en los bordes de los mismos, lo que sugiere que los senderos favorecen los procesos de invasión.

Summary Background and aims: Climate change, livestock and increasing tourism use favor the dispersal of non-native plants, threatening the conservation of high Andean ecosystems. We studied the distribution patterns of native and non-native species in recreational trails of mountains. M&M: We implemented the MIREN T-Trails protocol in six trails (2400-3600 m a.s.l.) in two protected areas of the central Andes of Mendoza, located in the Cordilleras Frontal and Principal. Results: We found 180 native and 41 non-native especies. Native species richness peaked at intermediate elevations, while non-native richness decreased with elevation. The Cordillera Frontal had more native richness than the Cordillera Principal (114 versus 71 native, respectively), but regional richness of exotics was lower in the Cordillera Frontal (20 versus 28 exotic, respectively). The non-native richness per plot was higher in the Cordillera Frontal than in the Cordillera Principal. In turn, the altitudinal distribution range of non-native was greater in the Cordillera Frontal, showing that exotics are more widely distributed in more humid sites of the arid Andes. Two abundant non-natives, Taraxacum officinale and Cerastium arvense, were present along the entire surveyed gradient in the Cordillera Frontal, reaching 3600 m a.s.l. We found seven non-natives not previously cited for the region. Conclusions: The new records found extend the known distribution ranges of some non-native species. Our results show that although the number of non-native species was similar near and far from trails, five species were present only at trail edges, suggesting that trails favor invasion processes.

Resumen Introducción y objetivos: Para contribuir al conocimiento y conservación de la flora de los Andes áridos exploramos cómo los caminos vehiculares y la elevación modulan la composición y riqueza en las comunidades vegetales. Además, buscamos estimar el grado de invasión de la comunidad e identificar a las especies exóticas más comunes en tres áreas protegidas de Mendoza. M&M: Registramos la composición y abundancia de plantas nativas y exóticas en el gradiente de elevación (desde 1700 m hasta 3900 m s.n.m.) de tres caminos vehiculares (Villavicencio, Cordón del Plata, y Manzano-Portillo). En cada camino se localizaron 20 transectas tipo “T” de acuerdo al protocolo MIREN (www.mountaininvasions.org). Resultados: Identificamos 357 especies, 42 fueron exóticas (12%). La cobertura de exóticas fue mayor en Cordón del Plata (23%) que en las otras áreas protegidas (Manzano 11%, Villavicencio 6%). La mayoría de las plantas exóticas son herbáceas, excepto Rosa rubiginosa. El 64% de las especies nativas y el 45% de exóticas fueron exclusivas de un área protegida, y la composición de nativas y de exóticas fue diferente entre las áreas protegidas. La riqueza de exóticas fue mayor en cercanía al camino y decreció cuadráticamente con la elevación, pero para explicar la riqueza de nativas es necesario considerar la interacción entre elevación y distancia al camino. La riqueza de nativas cerca del camino fue constante en el gradiente de elevación (~15 especies) pero mostró una relación lineal decreciente lejos del camino. Conclusiones: Los caminos alteran los patrones de distribución de las especies a lo largo de la elevación en los Andes.

Summary Background and aims: In order to contribute to the knowledge and conservation of the arid Andes flora, we explored how vehicular roads and elevation affect the composition and richness of plant communities. In addition, we aim to estímate the degree of plant invasion in the native community and identify the most common non-natives at three protected areas in Mendoza. M&M: We recorded the composition and abundance of native and non-natives along the elevation gradient (from 1700 to 3900 m a.s.l.) in three vehicular roads (Villavicencio, Cordón del Plata, and Manzano-Portillo). At each road, 20 “T-plots” were located according to the MIREN protocol www.mountaininvasions.org. Results: We identified 357 species, 42 were non-native (12%). Non-native cover was higher at Cordón del Plata (23%) than in the other protected areas (Manzano 11%, Villavicencio 6%). Most non-natives were herbaceous, except Rosa rubiginosa. Of all species, 64% of natives and 45% of non-natives were exclusive to a protected area, therefore native and non-native species composition was different among the protected areas. Non-native richness was higher near the road and decreased quadratically with elevation, but to explain native richness patterns it was necessary to consider the interaction between elevation and distance from the road. Native richness near the road was constant along the elevation gradient (~15 species) but showed a decreasing linear relationship away from the road. Conclusions: Roads can modify the distribution patterns of species along the elevation in the Andes.

Abstract: This paper presents a novel hybrid approach for studying electric power systems as a combination of the electrical power generation process and the actual state of the transmission lines. The approach is composed of a discrete-event simulation model and a mathematical programming model. The simulation model is designed as a routing problem defined over a set of transmission lines considered (individually) as active, inactive, under maintenance, and outage. On the other hand, the mixed-integer lineal programming model determines the best way to generate and transmit power flows (considering, simultaneously, all possible solutions). This type of model allows solving the economic dispatch problem in lower computational times. It also ensures reaching the global optimum. When adding the discrete-event simulation model for studying the state of transmission lines, the final hybrid approach allows obtaining feasible solutions when the system parameters change. Here, both models (i.e., simulation and optimization models) are combined to improve the capabilities of the model structure to represent real-life scenarios. Our proposal is used to analyze a case study composed of an electric system with six buses, eleven lines, and three generators.

Abstract The genus Microbryum is recorded for the first time in Argentina, with a single species Microbryum davallianum. The species differs from others in the genus mainly by stegocarpous capsules, long setae and spore ornamentation. A description, photographs and illustration of the species are provided. Argentina davallianum capsules ornamentation description provided

Abstract Coronary artery disease (CAD) and ischemic heart disease (IHD) are often indistinctly used terms. Both combined have generated, over the past years, concerns about sex disparities in their presentation. From an epidemiological perspective, females have several disadvantages regarding the prevention, diagnosis, and treatment of CAD. Most of the general cardiovascular risk factors affect women more frequently, or with a higher morbidity and mortality association. Besides, atypical manifestations of the disease and uncommon forms of CAD represent a diagnostic challenge for clinicians. Even if current treatments for CAD have no apparent sex bias, women representation in clinical trials and treatment patterns analyzed in clinical practice refuse this statement. Several disparities are caused by inevitable sex-particularities, but many of them are more social, cultural, and dogmatic beliefs that have to be addressed and overhaul. (CAD IHD (IHD terms generated years presentation perspective prevention diagnosis frequently association Besides clinicians bias statement sexparticularities, sexparticularities particularities, particularities sex-particularities social cultural overhaul

Abstract In order to determine the effect of substituting protein ingredients on production parameters (daily weight gain, feed intake and feed conversion) in confined bulls, bovine animals were selected, grouped into 2 lots in a random and homogeneous manner, composed of nelore-type bulls between 1 and 3 years of age: Treatment 1 (T1) 51 bulls with feed based on corn mockery and Treatment 2 (T2) 51 bulls with feed based on soybean expeller. The initial weighing was carried out at the entrance of the animals, after which two weighings were carried out, one at 45 days and the other at 90 days. At the end of the period, the weights of each group were compared. The results obtained based on the daily weight gain were subjected to the T-Student statistical method, observing significant differences (p<0.05), in favor of T2 in relation to T1. Daily weight gain was 1.47 kg/day at T1, 1.52 kg/day at T2, with daily consumption at T1 being 16.8 kg and 17.4 kg at T2, in terms of feed conversion at T1 it was 6.75 kg and at T2 it was 6.82 kg.

Resumen Con el objetivo de determinar el efecto de la sustitución de ingredientes proteicos sobre parámetros productivos en toros confinados (ganancia diaria de peso, consumo y conversión alimenticia), fueron seleccionados animales de la especie bovina, agrupados en 2 lotes de forma aleatoria y homogénea, compuestos por toros tipo nelore de entre 1 a 3 años de edad: Tratamiento 1 (T1) 51 toros con alimento a base de burlanda de maíz y Tratamiento 2 (T2) 51 toros con alimento a base de expeller de soja. El pesaje inicial se realizó a la entrada de los animales. Posterior a eso se procedió a dos pesajes, uno a los 45 días y otro a los 90 días. Al final del período se realizó la comparación de los pesos de cada grupo. Los resultados obtenidos en base a la ganancia diaria de peso fueron sometidos al método estadístico T-Student, observándose diferencias significativas (p<0,05) a favor del T2 en relación al T1. La ganancia diaria de peso fue en el T1 de 1,47 kg/día y en el T2 1,52 kg/día, siendo el consumo diario en el T1 de 16,8 kg y en el T2 17,4 kg. En cuanto a la conversión alimenticia en el T1 fue de 6,75 kg y en el T2 fue de 6,82 kg.

ABSTRACT Introduction: There is little literature on the association between right bundle branch block and risk factors such as hypertension and diabetes in patients in Latin America and Peru. Objective: To determine the factors associated with right bundle branch block in older adults. Methods: Analytical cross-sectional study completed by 376 elderly patients treated at Almanzor Aguinaga Asenjo Hospital, Lambayeque-Peru. The dependent variable was the presence of right bundle branch block, and the independent variables were age, sex, history of hypertension, and diabetes. Prevalence ratios and 95 % confidence intervals were estimated. Results: Of 376 patients, the majority were male (55,9 %), the mean age was 75,6 years, 11,4 % had a history of hypertension and 9 % were diabetic; 41 % had a diagnosis of right bundle branch block. In simple regression, the frequency of right bundle branch block was 56 % (PR= 1,56; 95 % CI: 1,22-1,99), 65 % (PR=1,65; 95 % CI: 1,26 - 2,15) and 59 % (PR= 1,59; CI 95 %: 1,18 - 2,14) higher in women, hypertensive and diabetics; respectively. In the multiple regression; female sex (PR= 1,53; 95 % CI: 1,21 - 1,95), history of hypertension (PR= 1,55; 95 % CI: 1,21 - 2,00) and diabetes mellitus (PR= 1,49; 95 % CI: 1,12 - 2,00) were positively associated with right bundle branch block. The nested model selected the variables: female sex (PR= 1,54; 95 % CI: 1,21 - 1,96) and history of arterial hypertension (PR= 1,61; 95 % CI: 1,25 - 2,08). Conclusion: Female sex, history of arterial hypertension and diabetes mellitus were positively associated with presenting right bundle branch block in older adults.

RESUMEN Introducción: Existe poca literatura sobre la asociación entre el bloqueo de rama derecha y factores de riesgo como la hipertensión y la diabetes en pacientes de Latinoamérica y Perú. Objetivo: Determinar los factores asociados al bloqueo de rama derecha en adultos mayores. Métodos: Estudio transversal que incluyó 376 pacientes adultos mayores atendidos en el Hospital Almanzor Aguinaga Asenjo, Lambayeque-Perú. La variable dependiente fue la presencia de bloqueo de rama derecha y las variables independientes fueron edad, sexo, antecedente de hipertensión arterial y diabetes. Se estimaron razones de prevalencia e intervalos de confianza al 95 %. Resultados: De 376 pacientes, la mayoría eran varones (55,9 %), la edad media fue de 75,6 años, el 11,4 % tuvo antecedente de hipertensión y el 9 % era diabético. El 41 % tuvo diagnóstico de bloqueo de rama derecha. En la regresión múltiple; el sexo femenino (RP=1,53, IC 95 %: 1,21 - 1,95), antecedente de hipertensión (RP=1,55; IC 95 %: 1,21 - 2,00) y diabetes mellitus (RP=1,49, IC 95 %: 1,12 - 2,00) se asociaron de forma positiva a presentar bloqueo de rama derecha. El modelo anidado seleccionó las variables: sexo femenino (RP=1,54, IC 95 %: 1,21 - 1,96) y antecedente de hipertensión arterial (RP=1,61, IC 95 %: 1,25 - 2,08). Conclusión: El sexo femenino, antecedente de hipertensión arterial y de diabetes mellitus se asocian positivamente a presentar bloqueo de rama derecha.

Abstract In the present work we study how the number of simulated customers (occupancy) affects social distance in an ideal supermarket, considering realistic typical dimensions and processing times (product selection and checkout). From the simulated trajectories we measure social distance events of less than 2 m, and their duration. Among other observables, we define a physical distance coefficient that informs how many events (of a given duration) each agent experiences.

Abstract: The fruit fly pest caused by Tephritidae severely affects fruit crops in the world. Integrated pest management includes the spraying of synthetic broad-spectrum insecticides. Due to the long-term negative effects of the use of synthetic insecticides, botanicals extracts have been proposed as new ecological alternatives. In the study, the insecticide potential of Magnolia perezfarrerae, M. pugana and M. vovidesii was tested against Anastrepha ludens and A. obliqua through feeding bioassays, mixture of sugar and crude extracts of sarcotesta. In addition, qualitative chemical profiles were carried out to explore the composition of insecticide-effectiveness ethanol crude extracts of sarcotesta of four species of Magnolia. Qualitative chemical profiles were performed using thin layer chromatography based on seven polarity systems. Moreover, secondary metabolite clusters were identified through qualitative analyses. The insecticide-effectiveness of Magnolia extracts was higher than 93% against A. ludens in the first dilution, whereas the effectiveness against A. obliqua ranged from 66% M. perezfarrerae to 92% M. vovidesii. The extracts of Magnolia showed a wide variety of compounds with different polarity. Furthermore, the presence of alkaloids, flavonoids and phenols was detected in all species of Magnolia. The insecticide properties of Magnolia can contribute to the integrated management of Anastrepha.

Resumen: La plaga mosca de la fruta, ocasionada por Tefrítidos, afecta gravemente a los cultivos frutales en el mundo. El manejo integrado de la plaga incluye la aspersión de insecticidas sintéticos de amplio espectro. Debido a los efectos negativos a largo plazo del uso de insecticidas sintéticos, se han propuesto extractos botánicos como nuevas alternativas ecológicas. En este estudio, se evaluó el potencial insecticida de Magnolia perezfarrerae, M. pugana y M. vovidesii contra Anastrepha ludens y A. obliqua mediante bioensayos de alimentación en individuos adultos, mezcla de azúcar y extractos crudos de sarcotesta. Se realizaron perfiles químicos cualitativos para explorar la composición de los extractos crudos etanólicos de sarcotesta de cuatro especies de Magnolia con efectividad insecticida, mediante cromatografía en capa fina usando siete sistemas de polaridad. Además, se identificaron grupos de metabolitos secundarios mediante análisis cualitativos. La efectividad insecticida de los extractos de Magnolia fue mayor al 93% contra A. ludens en la primera dilución, por el contrario, la efectividad contra A. obliqua fluctuó desde el 66% de M. perezfarrerae hasta 92% de M. vovidesii. Los extractos de Magnolia mostraron una amplia diversidad de compuestos de diferentes polaridades. Además, se detectó la presencia de alcaloides, flavonoides y fenoles en todas las especies de Magnolia. Las propiedades insecticidas de Magnolia pueden contribuir al manejo integrado de Anastrepha.

ABSTRACT Introduction: Brazil faced a catastrophic situation in the coronavirus pandemic. Due to the high risk of contamination and spread of COVID-19, dentist have been attending only urgency and emergency services in Brazil at the beginning of the pandemic. Objective: This research aimed to evaluate the psychological and financial impacts caused by the coronavirus pandemic in Brazilian orthodontists. Methods: This population-based cross-sectional study collected demographic data and mental health measurements from 404 orthodontists. Depression, anxiety, insomnia, and distress were evaluated through Brazilian versions of the 9-item Patient Health Questionnaire (9-PHQ), the 7-item Generalized Anxiety Disorder scale and Mini-Tracking (GAD), the 7-item Insomnia Severity Index (ISI), and the 22-item Impact of Event Scale-Revised (IES-R), respectively. The demographic data of the sample was described using descriptive statistics. The data was analyzed according to sex, professional status, and economic income. Comparisons were performed using Chi-square tests, Mann-Whitney U tests, and Kruskal-Wallis followed by post-hoc tests. Results: Females, graduate students, and lower incomes subgroups showed higher levels of depression, anxiety, insomnia, and distress. Most orthodontists showed moderate to extreme financial and professional concerns during the pandemic. Conclusion: The coronavirus pandemic negatively affected the psychological health and increased the financial concerns of the Brazilian orthodontists, mainly female, graduate students, and with income below 10k participants.

RESUMO Introdução: O Brasil enfrentou uma situação catastrófica durante a pandemia do coronavírus. Devido ao alto risco de contaminação e disseminação do vírus da COVID-19, os cirurgiões-dentistas passaram a realizar apenas atendimentos de urgência ou emergência no início da pandemia. Objetivo: O presente estudo teve como objetivo avaliar o impacto financeiro e psicológico causado pela pandemia do coronavírus nos ortodontistas brasileiros. Métodos: Este estudo transversal de base populacional coletou os dados demográficos e o impacto da pandemia em 404 ortodontistas. Depressão, ansiedade, insônia e angústia foram avaliadas, respectivamente, por meio da versão em português do Questionário de Saúde do Paciente (PHQ-9), do módulo de transtorno de ansiedade generalizada (GAD) do Mini-Tracking (GAD/Mini-Tracking), do Índice de Severidade de Insônia (ISI) e o do Impact of Events Scale-Revised (IES-R). As características demográficas da amostra foram apresentadas por meio de estatística descritiva. Os dados foram analisados de acordo com o sexo, situação profissional e renda econômica. As comparações foram realizadas utilizando os testes de Qui-quadrado, Mann-Whitney U e Kruskal-Wallis, seguidos de testes post-hoc (p<0,05). Resultados: Mulheres, estudantes de pós-graduação e profissionais com menores rendas apresentaram níveis mais altos de depressão, ansiedade, insônia e angústia. A maioria dos ortodontistas mostrou preocupação financeira e profissional moderada a extrema durante a pandemia. Conclusão: A pandemia do coronavírus afetou negativamente a saúde psicológica dos ortodontistas brasileiros e aumentou as preocupações financeiras desses profissionais. As mulheres, os estudantes de pós-graduação e os participantes com renda mensal menor que R$10 mil foram os grupos mais afetados.