bluuebunny/crossref_metadata_2025 huggingface dataset:
A Significant Role of Activation Energy and Fourier Flux on the Quadratically Radiated Sphere in Low and High Conductivity of Hybrid Nanoparticles
Authors: Venkateswarlu Avula , Murshid Nimer , Mulki Hasan , Abu-samha Mahmoud , Suneetha Sangapatnam , Babu Macherla Jayachandra , Raju Chakravarthula Siva Krishnam , Homod Raad Z. , Al-Kouz Wael
Published: November 2022

Fluid flow through a sphere has practical applications in numerous areas of technology, for instance, mineralogy, food engineering, and oilfield drilling. The goal of this paper is to look at how quadratic thermal radiation and activation energy affect the dissipative flow of hybrid nanofluids around a sphere with the heat source parameter. bvp4c (a MATLAB in-built function) is used to solve a system of nonlinear ordinary differential equations, which is the transformed version of the system of governing equations. Using multiple linear regression, the effects of relevant parameters on the mass transfer rate, the Nusselt number, and the skin friction coefficient are investigated. The key findings of this study are that increasing the radiation parameter improves the fluid temperature and increasing the activation energy parameter improves the fluid concentration. When the Eckert number and the parameter of the heat source are increased, the convective heat transmission is reduced. It appears that the magnetic field parameter reduces the shear stress near the surface. It is discovered that increasing the volume percentage of nanoparticles increases the skin friction coefficient and increasing the Schmidt number increases the mass transfer rate. Furthermore, the current results are validated against previously published data.
Symmetry (Asymmetry) of the Molar Excess Gibbs Free Energy Function of the Binary Mixed Micelles of Bile Acid Anion and Classical Cationic Surfactant: Influence of Sterically Shielded and Sterically Unshielded Polar Groups of the Steroid Skeleton
Authors: Poša Mihalj
Published: November 2022

Binary mixtures of surfactants build a binary mixed micelle in which the ratio of surfactants usually differs from the initial ratio of surfactants in their binary mixture. The thermodynamic stabilization of the binary mixed micellar pseudophase about the hypothetical ideal state (intermolecular interactions between the different particles and the conformational states of the particles are identical to those of monocomponent states) is described by the molar excess Gibbs free energy (gE). The dependence of gE on the molar fraction of surfactant i (xi) from the binary mixed micelle can be described by a symmetric function (symmetry is described to the line parallel to the y-axis and passes through xi = 0.5) or by an asymmetric function. Theoretical analysis (canonical partition function, conformational analysis) examines how the presence of different polar functional groups, some of which are sterically shielded from the steroid skeleton of bile salts (surfactant), affect the symmetry of the function gE of the binary mixed micelle of the cholic acid anion (bile salts) and classic cationic surfactant (hydrophobic tail and polar head). Suppose the steroid skeleton of the bile salt contains non-sterically shielded polar groups (or the temperature is relatively high). In that case, gE is a symmetric function. At the same time, if the steroid skeleton also contains sterically shielded polar groups, then the gE function is asymmetric.
Ignoring Internal Utilities in High-Utility Itemset Mining
Authors: Oguz Damla
Published: November 2022

High-utility itemset mining discovers a set of items that are sold together and have utility values higher than a given minimum utility threshold. The utilities of these itemsets are calculated by considering their internal and external utility values, which correspond, respectively, to the quantity sold of each item in each transaction and profit units. Therefore, internal and external utilities have symmetric effects on deciding whether an itemset is high-utility. The symmetric contributions of both utilities cause two major related challenges. First, itemsets with low external utility values can easily exceed the minimum utility threshold if they are sold extensively. In this case, such itemsets can be found more efficiently using frequent itemset mining. Second, a large number of high-utility itemsets are generated, which can result in interesting or important high-utility itemsets that are overlooked. This study presents an asymmetric approach in which the internal utility values are ignored when finding high-utility itemsets with high external utility values. The experimental results of two real datasets reveal that the external utility values have fundamental effects on the high-utility itemsets. The results of this study also show that this effect tends to increase for high values of the minimum utility threshold. Moreover, the proposed approach reduces the execution time.
A Hybrid Support Vector Machine Algorithm for Big Data Heterogeneity Using Machine Learning
Authors: Ahsaan Shafqat Ul , Kaur Harleen , Mourya Ashish Kumar , Naaz Sameena
Published: November 2022

Big data technology has gained attention in all fields, particularly with regard to research and financial institutions. This technology has changed the world tremendously. Researchers and data scientists are currently working on its applicability in different domains such as health care, medicine, and the stock market, among others. The data being generated at an unexpected pace from multiple sources like social media, health care contexts, and Internet of things have given rise to big data. Management and processing of big data represent a challenge for researchers and data scientists, as there is heterogeneity and ambiguity. Heterogeneity is considered to be an important characteristic of big data. The analysis of heterogeneous data is a very complex task as it involves the compilation, storage, and processing of varied data based on diverse patterns and rules. The proposed research has focused on the heterogeneity problem in big data. This research introduces the hybrid support vector machine (H-SVM) classifier, which uses the support vector machine as a base. In the proposed algorithm, the heterogeneous Euclidean overlap metric (HEOM) and Euclidean distance are introduced to form clusters and classify the data on the basis of ordinal and nominal values. The performance of the proposed learning classifier is compared with linear SVM, random forest, and k-nearest neighbor. The proposed algorithm attained the highest accuracy as compared to other classifiers.
Genetic Algorithm for Optimizing Energy Efficiency in Downlink mmWave NOMA System with Imperfect CSI
Authors: Aldebes Reem , Dimyati Kaharudin , Hanafi Effariza
Published: November 2022

Nonorthogonal multiple access (NOMA) is considered a promising technique for improving energy efficiency (EE) in beyond-5G wireless systems. In this paper, we investigate the maximization of EE of downlink wireless systems by combining mmWave with NOMA technologies, considering the asymmetric required data rate of user applications. We propose a genetic algorithm (GA) to solve the non-convex energy efficiency problem for an imperfect CSI downlink mmWave NOMA system. The studied mixed-integer optimization problem was converted to an integer optimization problem and solved using a GA, which determines the best clustering members in mmWave NOMA. The required population size of the proposed GA was determined to evaluate its effectiveness for a massive number of users. In addition, the GA’s convergence to the optimal solution for light traffic and relatively heavy traffic was also analyzed. Our results illustrate that the solution obtained solution via GA is almost equal to the optimal value and outperforms the conventional orthogonal multiple access, where the EE is improved by more than 75%. Finally, the impact of the estimation error of CSI on the system performance was evaluated at different required SINR scenarios. The results show that EE is degraded in the case of imperfect CSI case but is still close to the optimal solution.
Correction: Ocádiz Flores et al. Thermodynamic Description of the ACl-ThCl4 (A = Li, Na, K) Systems. Thermo 2021, 1, 122–133
Authors: Ocádiz Flores Jaén A. , Rooijakkers Bas A. S. , Konings Rudy J. M. , Smith Anna Louise
Published: November 2022

Corrected excess Gibbs energies of the liquid solutions in the ACl-ThCl4 (A = Li, Na, K), as well as revised standard enthalpies of formation and standard entropies of the intermediate phases occurring in the binary systems, are presented [...]
Toxicokinetics, Percutaneous Absorption and Tissue Distribution of Benzophenone-3, an UV Filtering Agent, in Rats
Authors: Jung Woohyung , Seok Su Hyun , Shin Soyoung , Ryu Sung Ha , Kim Kyu-Bong , Shin Beom Soo , Kim Tae Hwan
Published: November 2022

The aim of this study was to evaluate in vitro skin permeation and deposition, in vivo toxicokinetics, percutaneous absorption and tissue distribution of benzophenone-3 (BP-3) in rats. Four transdermal formulations containing BP-3 were prepared and evaluated for in vitro skin permeation and deposition of BP-3 using Franz diffusion cells. A gel formulation was used in subsequent in vivo percutaneous absorption due to its high in vitro skin permeation and deposition. Compared to intravenous (i.v.) injection, the prolonged terminal t1/2 (3.1 ± 1.6 h for i.v. injection and 18.3 ± 5.8 h for topical application) was observed indicating occurrence of flip-flop kinetics after topical application. The bioavailability of BP-3 after topical application was 6.9 ± 1.8%. The tissue-to-plasma partition coefficient (kp) for testis, considered a toxic target for BP-3, was less than 1. Overall, findings of this study may be useful for risk assessment of BP-3.
What’s New in the Diagnosis of Periprosthetic Joint Infections: Focus on Synovial Fluid Biomarkers
Authors: Solarino Giuseppe , Bizzoca Davide , Moretti Lorenzo , Vicenti Giovanni , Piazzolla Andrea , Moretti Biagio
Published: November 2022

Periprosthetic joint infections are some of the leading causes of revision prosthetic surgery, accounting for 25% of failed total knee replacements and 15% of failed total hip replacements. The search for a biomarker that, together with clinical and radiological findings, could improve the management of such patients is currently a significant challenge for orthopaedic surgeons. Synovial fluid is a viscous and mucinous substance produced by the synovium, a specialized connective tissue that lines diarthrodial joints. Synovial fluid is an ultrafiltrate of plasma but also contains proteins secreted from the surrounding tissues, including the articular cartilage and synovium. Therefore, synovial fluid represents a source of disease-related proteins that could be used as potential biomarkers in several articular diseases. Based on these findings, the study of synovial fluid has been gaining increasing importance in recent years. This review aims to assess the accuracy and the limitations of the most promising synovial fluid biomarkers—i.e., Alpha-Defensin, Leukocyte Esterase, C-Reactive Protein, Interleukin-6, Calprotectin, Presepsin and Neopterin—in the diagnosis of PJI. Special attention will be given to emerging synovial biomarkers, which could soon be important in diagnosing PJIs.
A Modified PINN Approach for Identifiable Compartmental Models in Epidemiology with Application to COVID-19
Authors: Hu Haoran , Kennedy Connor M. , Kevrekidis Panayotis G. , Zhang Hong-Kun
Published: November 2022

Many approaches using compartmental models have been used to study the COVID-19 pandemic, with machine learning methods applied to these models having particularly notable success. We consider the Susceptible–Infected–Confirmed–Recovered–Deceased (SICRD) compartmental model, with the goal of estimating the unknown infected compartment I, and several unknown parameters. We apply a variation of a “Physics Informed Neural Network” (PINN), which uses knowledge of the system to aid learning. First, we ensure estimation is possible by verifying the model’s identifiability. Then, we propose a wavelet transform to process data for the network training. Finally, our central result is a novel modification of the PINN’s loss function to reduce the number of simultaneously considered unknowns. We find that our modified network is capable of stable, efficient, and accurate estimation, while the unmodified network consistently yields incorrect values. The modified network is also shown to be efficient enough to be applied to a model with time-varying parameters. We present an application of our model results for ranking states by their estimated relative testing efficiency. Our findings suggest the effectiveness of our modified PINN network, especially in the case of multiple unknown variables.
BNT162b2 (Pfizer/BioNTech) COVID-19 Vaccination Was Not Associated with the Progression of Activity of the Exudative Form of Age-Related Macular Degeneration during Anti-VEGF Therapy
Authors: Płatkowska-Adamska Bernadetta , Bociek Agnieszka , Krupińska Joanna , Kal Magdalena , Biskup Michał , Zarębska-Michaluk Dorota , Odrobina Dominik
Published: November 2022

Background: Evaluation of the activity of the exudative form of age-related macular degeneration (AMD) during anti-vascular endothelial growth factor (anti-VEGF) therapy before and after administration of BNT162b2 (Pfizer/BioNTech) vaccination. Methods: The optical coherence tomography and best corrected visual acuity (BCVA) records of the two previous visits before the first dose of BNT162b2 (first pre-vaccination visit marked as “V-1”, the previous pre-vaccination “V-2”), and two subsequent visits after the second dose of vaccination (first visit after the second dose marked as “V1”, second visit after the second dose marked as “V2”) were collected for 63 eyes of 59 patients. Results: The difference in the average retinal thickness was observed between the last and each other checkpoint for the aflibercept group and in the overall outcome. The maximum thickness from the inner retinal surface to the inner border of RPE decreased during the observation; differences were observed comparing visits −2 and 1. Subretinal complex thickness decreased during follow-up, and the differences were observed between visits −2 and 2. There were no statistically significant differences in the BCVA and the occurrence of intraretinal cystoid fluid, serous PED, subretinal hyperreflective material, and retinal hemorrhage. Conclusion: In the present study, the activity of the exudative form of AMD did not deteriorate after the administration of the BNT162b2 vaccine.
Trends and Factors Associated with HIV Testing among Adolescent Girls and Young Women in Lesotho: Results from 2004 to 2014 Lesotho Demographic and Health Surveys
Authors: Sonny Onalethata Ntshadi , Musekiwa Alfred
Published: November 2022

HIV/AIDS is prevalent among adolescent girls and young women (AGYW) in Lesotho, and among the top five infectious diseases causing a high mortality rate in Africa. The paramount management of HIV is based on screening, prevention, and therapeutic interventions, of which HIV testing and counselling (HTC) is the gateway. The utilization of HTC services among AGYW is limited owing to numerous barriers encountered by this population group. The aim of this study was to assess trends and factors associated with HTC among AGYW in Lesotho. A secondary data analysis was used to analyze data sets extracted from the 2004, 2009, and 2014 Lesotho Demographic Health Surveys (LDHS). The LDHS was conducted using a cross-sectional study design and samples drawn were representative of the whole population of Lesotho. We used descriptive analysis to determine trends in HTC. In determining factors associated with the uptake of HTC, univariate and multivariable logistic regression models were applied on the 2014 LDHS. All analyses were adjusted for unequal sampling probabilities using survey weights. The number of AGYWs analyzed were 2743 in 2004, 2393 in 2009, and 2842 in 2014. The overall prevalence estimates of HTC uptake were 12%, 62.2%, and 72.5%, respectively. For the 15–19 years AGYW, HTC uptake rose from 6.2% (2004), 46.3% (2009), to 57.9% (2014), while for the 20–24 years age group, the rates were 18.7%, 80.2%, and 88.3%, respectively. For the 2842 AGYW in 2014, the odds of ever having an HIV test were significantly higher for those aged 20–24 years (aOR 2.15, 95% CI 1.61 to 2.87, p < 0.001), in a union (aOR 3.21, 95%CI 2.25 to 4.58, p < 0.001), with Mother-to-child transmission of HIV (MTCT) knowledge (aOR 1.53, 95%CI: 1.21 to 1.94, p < 0.001), with HIV non-discriminatory attitudes (aOR 2.50, 95%CI 1.87 to 3.34, p < 0.001), and those who had ever been pregnant (aOR 11.53, 95%CI 7.46 to 17.84, p < 0.001). HTC uptake among AGYW in Lesotho is below expected targets, hence we recommend optimizing access to HTC services, especially for AGYW aged 15–19 years.
Treatment and Recycle of Greenhouse Nutrient Feed Water Applying Hydrochar and Activated Carbon Followed by Reverse Osmosis
Authors: Jamal-Uddin Abu-Taher , Matsuura Takashi , Al-Daoud Fadi , Zytner Richard G.
Published: November 2022

Leached greenhouse nutrient feed (GNF) water is a great challenge for greenhouse (GH) producers. Unbalanced higher micronutrient metal’s phytotoxicity impact GH plant growth, and the high phosphorous levels can cause lake eutrophication if not treated. The analytical results of three GNFs revealed no microbial contamination in any of the GNFs, but the potassium, calcium, magnesium levels, and pH range were above the target level for root zone conditions. Both higher and lower limit concentrations are phytotoxic, causing poor or non-developed roots, leaves, and stems. Sodium was also not in the balanced range. Phosphate and nitrate nutrients were above the measurable range, showing that it would be a threat to lake eutrophication if disposed of. Due to uptake by plants at varied rates, nutrient ion imbalance in GNF is usual, but proper control or treatment is essential as GNF is not a waste but a resource providing fertilization to plants. Potential treatment options investigated include coagulation filtration, sorption with hydrochar (HC), and activated carbon (AC), followed by reverse osmosis (RO) membrane filtration. The HC and AC were produced from waste tomato plants biomass (TPB) of the same GHs to enhance the recycle–reuse of wastes. Neither metals nor nutrient concentrations were reduced to the desired levels by coagulation treatments. The HC and AC treatment provided the recycle–reuse possibility of GNF. RO membrane filtration provided about 97–99% reduction of metals and 99% reduction of nutrients, allowing GNF preparation by adding new fertilizer to the RO permeate. In such a case, the RO reject needs to be reused as feed for TPB carbonization. Different options for GHs to manage TPB and GNF are provided. As RO is an energy-expensive process, an assessment of technical know-how to provide an energy economic process is demonstrated.
Hydrology and Nutrient Dynamics in Managed Restored Wetlands of California’s Central Valley, USA
Authors: Kahara Sharon N. , Madurapperuma Buddhika D. , Hernandez Breana K. , Scaroni Luke , Hopson Eric
Published: November 2022

Extensive wetland losses in California’s Central Valley have led to significant reductions in their natural functions, such as nutrient removal. Past studies suggest that individual wetland restoration efforts in the region yield mixed results mainly due to differences in management practices and degree of access to limited water resources, yet few studies have examined their hydrology or nutrient dynamics with any detail. Our objective was to explore nutrient reduction across a range of hydrological regimes. We recorded hydroperiods and nutrient concentrations of the received and discharged applied water at 21 managed wetlands on national wildlife refuges and private lands over 6 years from 2015 to 2020. Water depths at 18 of these wetlands were monitored continuously for over 400 days. Climatic variation over the observation period included exceptional drought, above-average flooding and relatively stable water conditions. Privately managed wetlands retained water for longer durations of time, but at shallower depths than seasonal wetlands in wildlife refuges. An assessment of nutrient concentrations at inflows relative to outflows was inconclusive and varied among years. However, assessment of nutrient loads indicated consistent retention of ammonium and nitrates across all management types, locations and time periods. Multivariate analysis indicated that climate and location played a role in influencing nutrient concentrations among wetlands. In conclusion, restored wetlands in the central valley provide ecosystem service functions such as removing nutrients from ambient water and provide unique habitats for waterfowls with the presence of seasonal flood and drain management practices.
Effects of Energy Dissipation Pier Arrangements on the Hydraulic Characteristics of Segmented Pier-Type Step Energy Dissipator Structures
Authors: Feng Ziwei , Li Yongye , Tian Yu , Li Qian
Published: November 2022

To make more efficient use of limited space, improve the energy dissipation effect of the step dissipator, and mitigate the effect of cavitation, we propose a segmented pier-type step dissipator structure and used a numerical simulation to study the hydraulic effects of two different arrangements of piers: a double-row arrangement and a staggered arrangement. We’ve drawn the following conclusions from our study: the segmented pier-type structure produces a large water jump at the location of the energy dissipation pier. This involves a large amount of air, promotes air-doping of the water flow in the whole section, and reduces the length of the non-air-doping zone. The staggered pier arrangement produces a better air-doping effect at the water jump and a higher air-doping concentration along the water course. The staggered arrangement also produces a better cavitation mitigation effect and is better able to stabilise the water flow; the flow velocity at the outlet is lower, so the energy dissipation effect is better. A larger positive pressure area forms at the headwater and upstream areas of the energy dissipation pier; a larger negative pressure forms at the top and backwater of the energy areas. The staggered arrangement produces a larger negative pressure; however, under various flow conditions, the difference in the energy dissipation rate between the two forms of pier arrangements is not significant. We obtained a peak energy dissipation rate of 90.04%, which represents an improved energy dissipation effect compared with the control. The step energy dissipator described here is conducive to stabilising the outlet flow, reducing cavitation damage, and improving energy dissipation. These findings provide a valuable reference for the future design of sectional pier-type step energy dissipator structures.
The Electrochemical Reaction Kinetics during Synthetic Wastewater Treatment Using a Reactor with Boron-Doped Diamond Anode and Gas Diffusion Cathode
Authors: Issa Mohammad , Haupt Dennis , Muddemann Thorben , Kunz Ulrich , Sievers Michael
Published: November 2022

A system of boron-doped diamond (BDD) anode combined with a gas diffusion electrode (GDE) as a cathode is an attractive kind of electrolysis system to treat wastewater to remove organic pollutants. Depending on the operating parameters and water matrix, the kinetics of the electrochemical reaction must be defined to calculate the reaction rate constant, which enables designing the treatment reactor in a continuous process. In this work, synthetic wastewater simulating the vacuum toilet sewage on trains was treated via a BDD-GDE reactor, where the kinetics was presented as the abatement of chemical oxygen demand (COD) over time. By investigating three different initial COD concentrations (C0,1 ≈ 2 × C0,2 ≈ 4 × C0,3), the kinetics was presented and the observed reaction rate constant kobs. was derived at different current densities (20, 50, 100 mA/cm2). Accordingly, a mathematical model has derived kobs. as a function of the cell potential Ecell. Ranging from 1 × 10−5 to 7.4 × 10−5 s−1, the kobs. is readily calculated when Ecell varies in a range of 2.5–21 V. Furthermore, it was experimentally stated that the highest economic removal of COD was achieved at 20 mA/cm2 demanding the lowest specific charge (~7 Ah/gCOD) and acquiring the highest current efficiency (up to ~48%).
Characteristics and Controlling Factors of Groundwater Hydrochemistry in Dongzhi Tableland Area of the Loess Plateau of Eastern Gansu—A Case Study of Ning County Area, North China
Authors: Zhang Mengnan , Han Shuangbao , Wang Yushan , Wang Zhan , Li Haixue , Wang Xiaoyan , Liu Jiutan , Li Changsuo , Gao Zongjun
Published: November 2022

Groundwater plays an irreplaceable role in all aspects of the Loess Plateau. In this study, the loess phreatic water (LPW) and bedrock phreatic water (BPW) in the Ning County area (NCA) were sampled and analyzed, and the characteristics and controlling factors of groundwater were determined by using statistical analysis, hydrochemical methods, and hydrogeochemical simulation. The results indicated that the groundwater in the NCA was alkaline as a whole, and the average pH values of LPW and BPW were 8.1 and 7.8, respectively. The mean values of TDS concentrations of LPW and BPW were 314.9 mg/L and 675.3 mg/L, and the mean values of TH contents were 194.6 mg/L and 286.6 mg/L, respectively, which were mainly divided into hard fresh water. The Piper diagram illustrated that the hydrochemical type of groundwater in the NCA was mainly the HCO3·Ca type. The main recharge source of groundwater was atmospheric precipitation, and it was affected by evaporation to a certain extent. The linear relationships of δ18O and δ2H of LPW and BPW were δ2H = 6.998δ18O − 3.802 (R2 = 0.98) and δ2H = 6.283δ18O − 10.536 (R2 = 0.96), respectively. Hydrochemical analysis indicated that the groundwater in the NCA was mainly controlled by rock weathering and cation exchange. BPW was affected by the dissolution of gypsum. The possible mineral phases were identified on the basis of the main soluble minerals in the aquifer, and hydrogeochemical reverse simulations were performed. The dissolution of calcite, illite, and hornblende, and the precipitation of dolomite, plagioclase, and microcline occurred on both the LPW and BPW pathways.
formación continua de los profesionales de inglés: exploración a partir de indicadores de calidad en la Carrera Lenguas Extranjeras
Authors: Alberteris Galbán Orlando , González Agulló Liset , Rodríguez Sánchez Maylín
Published: November 2022

El presente trabajo forma parte del proyecto de investigación que se desarrolla en el Departamento de Lenguas Extranjeras sobre la profesionalización de la enseñanza del idioma inglés en la Universidad de Camagüey “Ignacio Agramonte Loynaz” en Cuba. Su objetivo fue caracterizar el proceso de formación continua de los profesionales de la Carrera Lenguas Extranjeras a partir de indicadores de calidad en la Educación Superior. Para ello, se han utilizado como métodos el análisis de documentos básicos de formación continua y técnicas de indagación basadas en la observación y cuestionarios a egresados y empleadores. La información obtenida permitió conocer las dificultades que existen en la formación continua del profesional de inglés, así como determinar los principales indicadores de calidad que posibilitaron un mejoramiento de la estrategia de atención al egresado de la carrera desde la concepción curricular y el trabajo científico-metodológico, dirigido a la formación inicial, básica y especializada del profesional de inglés. Los resultados de su implementación confieren pertinencia y aplicabilidad al proceso de formación continua de los profesionales de inglés en el territorio, lo cual fue avalado por el criterio de la Junta de Acreditación Nacional de la República de Cuba.
Estudio del consumo de ceviche en la ciudad de Manta y su contribución al turismo
Authors: Montilla Pacheco Argenis de Jesús , Delgado Mera Alisson Angelit , Rivadeneira Sabando Víctor Hugo
Published: November 2022

La gastronomía basada en productos del mar es fundamental en todas las ciudades costeras del mundo, siendo esta un pilar de atracción turística. La ciudad de Manta no es ajena a esta situación, teniendo como ícono local su gusto único por los platos de origen marino, en especial el ceviche. El objetivo del presente trabajo fue estudiar la tendencia del consumo de ceviche en la ciudad de Manta y su aporte al turismo local. Metodológicamente el estudio fue descriptivo, se utilizó la técnica del censal, dirigido a los dueños de restaurantes de la playa Murciélago y el Parque del Marisco de esa ciudad. Como resultado, se puede señalar que el ceviche es un producto gastronómico muy consumido por los turistas; quienes también refieren que tiene un alto valor nutricional, lo que se ha conjugado para que la oferta de este plato ayude a Manta a posicionarse mejor como destino turístico.  En conclusión, se puede afirmar que la venta de platillos del mar en general, y de ceviche en particular, ha tenido un incremento significativo desde la apertura de los restaurantes estudiados gracias a la implementación de estrategias de preparación, lo que consecuentemente ha contribuido a la rentabilidad de estos negocios.
Evaluación de resultados: proyectos de obras hidráulicas en Manta y Montecristi, 2015 – 2019
Authors: Delgado Anchundia Henry Emilio , Ortiz Hernández Eduardo
Published: November 2022

El presente artículo comprendió el desarrollo y la aplicación metodológica de la evaluación por resultados en proyectos de construcción hidráulica bajo procesos establecidos por la metodología de Evaluación del Sistema Integrado de Planificación e Inversión Pública acorde con lo propuesto por la Comisión Económica para América Latina y el Caribe. Se evaluaron criterios de pertinencia, eficiencia, eficacia, impacto y sostenibilidad, que permitieron cuantificar el desarrollo sustentable de la infraestructura hidráulica en los cantones Manta y Montecristi, en proyectos durante el periodo 2015-2019. En Ecuador son escasos los procedimientos donde se establece una evaluación a fin de retroalimentar los procesos de los proyectos y adquirir lecciones aprendidas. Los resultados mostraron una efectividad del 61 % en promedio según las encuestas para los tres proyectos evaluados del cantón Manta, a diferencia del 62 % en promedio porcentual de efectividad de los dos proyectos evaluados del cantón Montecristi. El cumplimiento de los indicadores de los proyectos en análisis es calificado entre bueno y regular. Se concluye que los proyectos de infraestructura hidráulica ejecutados tuvieron un impacto positivo que aseguran un desarrollo sustentable, pero requieren de mantenimiento preventivo y operacional para que no reflejen un descontento social.
Le bas-relief roman de l’Annonciation provenant du réfectoire de Charlieu
Authors: Stratford Neil
Published: November 2022

The relief of the Annunciation from the reader’s pulpit of the refectory at Charlieu (Loire) has recently been placed in the abbey museum, where it is clearly visible for the first time since the 1844 demolition of the refectory. It is closely related in both style and technique to the sculpture of the east end of Cluny III ; Charlieu was an important priory of Cluny. Surviving Benedictine refectories as early as that of Charlieu, which probably dated to the late 10th-or early 11th century, are rare and little is known about their decoration and furnishings. On the right of the relief, a nimbed monk, whose identity is the subject of debate (several candidates are mentioned), communicated directly with the monks seated below the pulpit at the tables in the refectory. With his finger he points towards the scene of the Annunciation on the left, directing the monks’ attention towards the first episode of the Incarnation, a remarkable example of Romanesque sculpture communicating with its audience directly by means of glance and gesture.
Highly Efficient and Selective Photocatalytic Nonoxidative Coupling of Methane to Ethylene over Pd-Zn Synergistic Catalytic Sites
Authors: Liu Yanduo , Chen Yihong , Jiang Wenbin , Kong Tingting , Camargo Pedro H. C. , Gao Chao , Xiong Yujie
Published: November 2022

Photocatalytic nonoxidative coupling of CH
4
to multicarbon (C
2+
) hydrocarbons (e.g., C
2
H
4
) and H
2
under ambient conditions provides a promising energy-conserving approach for utilization of carbon resource. However, as the methyl intermediates prefer to undergo self-coupling to produce ethane, it is a challenging task to control the selective conversion of CH
4
to higher value-added C
2
H
4
. Herein, we adopt a synergistic catalysis strategy by integrating Pd-Zn active sites on visible light-responsive defective WO
3
nanosheets for synergizing the adsorption, activation, and dehydrogenation processes in CH
4
to C
2
H
4
conversion. Benefiting from the synergy, our model catalyst achieves a remarkable C
2+
compounds yield of 31.85 
μ
mol·g
-1
·h
-1
with an exceptionally high C
2
H
4
selectivity of 75.3% and a stoichiometric H
2
evolution. In situ spectroscopic studies reveal that the Zn sites promote the adsorption and activation of CH
4
molecules to generate methyl and methoxy intermediates with the assistance of lattice oxygen, while the Pd sites facilitate the dehydrogenation of methoxy to methylene radicals for producing C
2
H
4
and suppress overoxidation. This work demonstrates a strategy for designing efficient photocatalysts toward selective coupling of CH
4
to higher value-added chemicals and highlights the importance of synergistic active sites to the synergy of key steps in catalytic reactions.
Molecular and Morphological Evidence Supports the Inclusion of Deinostigma into Metapetrocosmea (Gesneriaceae)
Authors: Li Peng-Wei , Liu Fang-Pu , Han Meng-Qi , Smith James F. , Wang Yin-Zheng
Published: November 2022

Metapetrocosmea W. T. Wang and Deinostigma W. T. Wang & Z. Y. Li were originally monotypic with M. peltata (Merr. & Chun) W. T. Wang and D. poilanei (Pellegr.) W. T. Wang & Z. Y. Li, respectively. Recent molecular phylogenetic research expanded Deinostigma to include several species previously transferred from Chirita D. Don to Primulina Hance. However, the relationship between Metapetrocosmea and Deinostigma has not been well addressed. In the present study, the type species of Metapetrocosmea and Deinostigma were sampled together with related taxa, and the systematic relationships were reexamined using the nuclear ribosomal internal and external transcribed spacer regions (ITS and ETS) and four chloroplast regions (rpL32-trnL, rps16, trnH-psbA, trnL-F). Phylogenetic analyses demonstrate that M. peltata is embedded in the species of Deinostigma and sister to D. poilanei. All of these species form a highly supported branch, i.e., Metapetrocosmea–Deinostigma clade, which is sister to Oreocharis Benth. Morphological analyses show that species in the Metapetrocosmea–Deinostigma clade share a series of morphological traits, i.e., alternate leaves, arcuate filaments, densely lanate anthers with the hair surface covered with granular or vermiform appendages, bilobed stigma that vary from dorsal to ventral and almost equal in size to a dorsal-ventral oblique lamella with the dorsal one sterile, hooked hairs and T-shaped glandular hairs occurring on the whole plant, and riblike seed surfaces. Both molecular and morphological evidence strongly suggest that the Metapetrocosmea–Deinostigma clade is monophyletic and should be combined into a single genus, i.e., Metapetrocosmea W. T. Wang. Therefore, we present a taxonomic treatment for this group.
Effectiveness of Cell Therapy for Alkaline Corneal Burn in the Experiment
Authors: Марченко Л.Н. , Чекина А.Ю. , Джумова М.Ф. , Бутько Л.В. , Федулов А.С. , Качан Т.В. , Гузов С.А. , Василевич И.Б. , Матиевский К.А. , Квачева З.Б. , Полешко А.Г. , Волотовский И.Д.
Published: November 2022

Представлены результаты применения метода клеточной терапии с использованием мезенхимальных стромальных стволовых клеток, полученных из жировой ткани, и лимбальных эпителиальных стволовых клеток глаза кроликов в стимуляции регенеративного процесса при щелочном ожоге роговицы 2-й степени в эксперименте. Установлено, что введение стволовых клеток в виде перилимбальных субконъюнктивальных инъекций ускоряло эпителизацию ожоговой раны роговицы у животных, уменьшало отек стромы и способствовало формированию менее интенсивного помутнения роговой оболочки при сопоставлении с группой сравнения. Полученные данные свидетельствуют о благоприятном воздействии клеточной терапии на процессы регенерации при химическом ожоге роговицы и могут послужить основанием для дальнейшей разработки метода с целью его применения в клинической практике.

The results of cell therapy using mesenchymal stromal stem cells obtained from adipose tissue and limbal epithelial stem cells of the rabbit eye in stimulating the regenerative process in case the corneal alkaline 2nd stage burn in the experiment are presented. It was found that the introduction of stem cells in the form of perilimbal subconjunctival injections accelerated the epithelialization of the corneal burn wound in animals, reduced the stromal edema and contributed to the formation of less intense corneal opacity when compared with the comparison group. The obtained data indicate a favorable effect of cell therapy on regeneration processes in alkaline corneal burns and can serve as a basis for further development of the method with a view to its application in clinical practice.
MENUMBUHKAN MOTIVASI BELAJAR MAHASISWA MELALUI PENGGUNAAN E-LEARNING LMS (LEARNING MANEGEMENT SYSTEM) DAN KOMPETENSI DOSEN
Authors: Nuraeni Yuni Siti , Irawati Dwi
Published: November 2022

Pesatnya perubahan teknologi informasi dan komunikasi berimbas pada kebutuhan akan fasilitas dalam pembelajaran yang memberikan kenyamanan serta kemudahan. Pemanfaatan teknologi informasi dan komunikasi dengan konsep e- learning khususnya pada pembelajaran daring di pendidikan tinggi menuntut mahasiswa untuk lebih mandiri dan aktif dalam proses pembelajaran. Sebagai salah satu universitas berbasis teknologi informasi dan komunikasi, UBSI memanfaatkan e- learning untuk menunjang proses pembelajaran selama pandemik covid 19. Penggunaan LMS (Learning Management System) yang dinamakan My Best (My BSI E- Learning System) memiliki beberapa keunggulan dalam hal metode pembelajaran yang praktis dan nyaman dengan salah satu tujuan penerapannya dalam perkuliahan daring adalah untuk meningkatkan motivasi belajar mahasiswa. Selain media pembelajaran LMS, dosen memiliki kontribusi untuk mewujudkan keberhasilan proses pembelajaran daring. Dosen memiliki peranan kunci dalam setiap upaya peningkatan mutu, relevansi dan efisiensi pendidikan. Kompetensi menjadi salah satu faktor yang dapat memotivasi mahaiswa dalam belajar yang juga tercermin dalam kemampuan mengajar. Penelitian ini dilakukan bertujuan untuk mengetahui pengaruh media pembelajaran e- learning LMS dan kompetensi dosen terhadap motivasi belajar. Metode penelitian kuantitatif dengan pendekatan deskriptif. Pengambilan sampel menggunakan sampel jenuh atau total sampling sehingga diperoleh 96 responden yaitu mahasiswa UBSI Prodi Manajemen Kampus Jatiwaringin dan Kalimalang dan selanjutnya dianalisa dengan secara regresi linear berganda, uji hipotesis dengan uji t dan uji f serta uji koefisien determinan yang diolah menggunakan IBM SPSS versi 25. Dimana hasil penelitian ini 1) media pembelajaran e-learning LMS secara parsial berpengaruh signifikan terhadap motivasi berlajar, 2) komptensi dosen secara parsial berpengaruh signifikan terhadap motivasi belajar, 3) media pembelajaran e- learning LMS dan kompetensi dosen secara bersama-sama berpengaruh signifikan terhadap motivasi belajar.
RESISTENCIA DE FRIJOL AL TIZÓN DE HALO EN EL VALLE DE MÉXICO Y PROGRESO DE LA ENFERMEDAD
Authors: Navarrete-Maya Rosa , Acosta-Gallegos Jorge Alberto
Published: November 2022

El tizón de halo causado por Pseudomonas syringae pv. Phaseolicola (P. syringae) afecta al frijol (Phaseolus vulgaris) de temporal y abate su rendimiento. El inóculo es diseminado por el agua de lluvia y por semilla. Esta enfermedad se controla con prácticas culturales, siembra de semilla sana, aplicación de agroquímicos y uso de variedades resistentes. Los objetivos de esta investigación fueron: a) identificar fuentes de resistencia a P. syringae en 32 genotipos elite de frijol y b) evaluar el progreso de la enfermedad durante el ciclo. En 1997 se realizaron dos experimentos para: 1) caracterizar 32 genotipos sembrados en abril 24, mayo 8 y junio 12, bajo condiciones de temporal. La enfermedad se evaluó en etapas vegetativas y reproductivas, con una escala de uno (resistente) a nueve (susceptible), y 2) evaluar el progreso de la enfermedad en 10 genotipos sembrados en abril 24 y mayo 8, al monitorear 10 plantas en cuatro ocasiones, desde el inicio de los síntomas. En el primer experimento los genotipos Pinto Villa, Amarillo de Calpan y Puebla 152 resultaron inmunes y otros ocho fueron resistentes, la mayoría pertenecientes a la raza Jalisco, mientras que MDRK y Cacahuate 72, de la raza Nueva Granada y hábito determinado, resultaron susceptibles. En el segundo experimento los genotipos México 332 y G 13746 fueron inmunes, Flor de Mayo Bajío y Negro Tacaná mostraron la infección más tardía. Entre los genotipos las curvas del progreso de la enfermedad y el área bajo la curva tuvieron diferentes períodos de latencia y distinto grado de severidad, sugiriendo la existencia de diferentes interacciones y posibles razas de P. syringae en el Valle de México, actuando solas o en conjunto.
INFLUENCIA DE TEMPERATURAS Y DE ESTIMULANTES DE BROTACIÓN EN LA CAÍDA DE YEMAS FLORALES DE CHABACANO (Prunus armeniaca L.) SELECCIÓN CP 90-4C
Authors: Armas-Reyes Ramón , Rodríguez-Alcázar Jorge , Colinas-León María Teresa , Trejo-López Carlos , Cárdenas-Soriano Elizabeth , Alcántar-González Gabriel
Published: November 2022

En el período de endoletargo, durante tres años consecutivos se estudió la caída de yemas florales en chabacanos (Prunus armeniaca L.) CP 90-4C, de dos, tres y cuatro años, establecidos en macetas. En el primer año las plantas se sometieron a tratamientos de temperaturas en cámaras de crecimiento a temperaturas bajas (5±2ºC), altas (15ºC) y alternadas (noches a 7ºC y durante el día a condiciones ambientales, una semana a 7ºC y la siguiente semana a condiciones ambientales), encontrándose que el tratamiento de alternancia de temperaturas, constante durante la noche y durante el día a condiciones ambientales provocaron la menor floración, rendimiento y amarre de frutos. En el tercer año, plantas tratadas con 20, 30 y 40 días a 7ºC, indicaron que las plantas con la mayor duración en frío (40 días) a 7ºC mostraron los mejores resultados en porcentaje de floración (44.6 %). Temperaturas constantes de 7ºC durante 45 días mostraron el mejor porcentaje de floración con 63.9 y 55.7 % de amarre de frutos. Así como la mejor calidad de flores con 86.6 % de flores tipo 5, considerado este valor en una escala de 1 a 5. La caída de yemas florales más alta se presentó en el testigo, con tratamientos de medio mes de frío y con el tratamiento de alternancia de temperaturas bajas durante la noche (5±2ºC) y día a condiciones ambientales, siendo éstos de 80.0, 72.1 y 81.1 %, respectivamente. El menor porcentaje de caída de yemas se obtuvo con los tratamientos de 30 y 45 días de frío (7ºC) con 59.2 y 35.8 %, respectivamente.
MÉTODO RÁPIDO Y CONFIABLE PARA MEDIR LOS CAMBIOS DE pH DE LA RIZOSFERA DE GENOTIPOS DE FRIJOL Fe-EFICIENTES Y Fe-INEFICIENTES
Authors: Lara-Mireles José Luis , Olivares-Sáenz Emilio
Published: November 2022

La presente investigación se llevó a cabo con el objetivo de evaluar la capacidad para bajar el pH de la rizósfera de cinco genotipos de frijol (Phaseolus vulgaris L.) Fe-eficientes y Fe-ineficientes sometidos a deficiencia de hierro (Fe). Para su desarrollo, se germinó semillas en tubos de ensaye con solución nutriente (pH de 6.8), agar y un indicador de pH (bromocresol púrpura). Se acomodaron de acuerdo con un diseño experimental completamente al azar con seis repeticiones. Las plántulas de frijol mostraron variabilidad en su capacidad de disminuir el pH de la rizósfera; las variedades de frijol AN-22 y Pinto Mexicano 80 fueron capaces de acidificar la rizósfera hasta valores de 3.0. Las variedades Durango 222 y Lagunero 87 no bajaron el pH de la rizósfera a pH menores de 6.0. La metodología utilizada para detectar los cambios del pH de la rizósfera es adecuada y confiable, por la sensibilidad que mostró elindicador para detectar la acidificación por la actividad de las raíces.
Modified International Toastmaster Approach to Improve Public Speaking Competence
Authors: Hartati Rita , Meisuri  , Ginting Siti Aisyah
Published: November 2022

Competency Based Education is very much needed in the era of the industrial revolution 5.0 and the determination of Toba Caldera as a UNESCO Global Geopark provides opportunities, encourages economic and sustainable development, requires skilled worker who has various competencies in a field of work. This competency improvement is also the outcomes of Independent Learning-Independent Campus. This research was the type of online survey tools associative research conducted factual information to obtain the truth. Online Survey Tools Research generally uses a google form as questionnaire instrument filled out by participants used certain methods. (Vasanta Raju 2018). Modified International Toastmaster model, testing and evaluating the model created by the Public Speaking training program involving 30 students of the English Literature Department Universitas Negeri Medan. The findings related to competence using the 10 Toastmaster International project speech delivery have shown at the pie chart (see figure 3.1 to 3.10). Modified International Toastmaster is associated with the six tasks models of Indonesian National Qualification Framework called KKNI to maximize the improvement of various competence in public speaking.
Practice and professional training of the civil engineers at the Instituto Tecnológico
de Oaxaca
Authors: CRUZ-ATAYDE Maritza , SÁNCHEZ-LIMA Leticia , CASTILLO-LEAL Maricela
Published: November 2022

The main objective of this contribution is to analize the training process of the civil engineers at Instituto Tecnológico de Oaxaca in the bonding setting that this institution stablishes with the regional environment. To bring context to this process we elaborated a historical reconstruction of the Tecnológico Nacional de México (TecNM). The theoretical apparatus gets its basis on the formation theory by Bernard Honoré with contributions from Guilles Ferry, Gadamer and Yurén. In this analysis the bonding is conceived as an enhancing analysis activity of the training process. The methodology is of the qualitative type, with ethnographic approach and a case study. Based on the theory, analysis categories and indicators were built, which were used to elaborate a guide for interviewing and another one for observation. Some partial results indicate that neither the institution nor the teacher are assisting in a satisfactory and adequate manner the different tasks of the bonding with professional settings. These shortcomings do not favor an appropriate professional training to the needs of the regional environment.