bluuebunny/crossref_metadata_2025 huggingface dataset:
La compra de sepulturas como manutención parroquial. La ermita de san Juan Bautista (Vallehermoso, La Gomera)
Authors:   Archivo Histórico Diocesano de San Cristóbal de La Laguna (España), Corbella Guadalupe David
Published: June 2021

In this work we study three documents found in the parish fund of San Juan Bautista de Vallehermoso (La Gomera) concerning the measures taken after the pastoral visit of 1632 for the improvement of the chapel. The first one, deals with the extension of the temple and its new plant project. The second refers to the changes that the arrangements and the visiting mandates imply for the economic improvement of the temple. And the third, shows the presentation made by the owners of the graves to demonstrate their ownership, allowing the income of money to economically support the parish; and know the name, both those who appeared in the sketch of dates of burial of the temple as those who do not.
Spatial and Aspectual Optimization of the World Investment Policy for Grain Growing
Authors: Gertsekovich D. , Gorbachevskaya L. , Podlinyaev O. , Konstantinova T.
Published: June 2021

The article is devoted to the problems of creating at the international level the optimal investment policy in agricultural production. The problem is solved by means of the “Return-Risk” model, which is based on the basic principles of the portfolio analysis: return, risk and the return-risk ratio. The model is easy to implement and does not require special skills; for important estimates it is necessary and sufficient to use MS
EXCEL Date Mining Add-in. This article analyses the historical data of 2010–2017 by productivity of grain crops in general: corn, wheat, barley and rice in different countries. The time span is 1 year. The source data are exported from knoema.com. The findings are as follows: 1) the leading countries with the most attractive potential investment results have been formed for each sample subgroup promise; 2) the benchmarking quantitative analysis on return, risk and the return-risk ratio revealed both the most investment-attractive crops depending on the investor’s attitude to the acceptable risk level, and the countries where the cultivation will be most profitable; 3) the results of the spatial, aspectual and global optimization afford synthesis of effective decision support investment systems. It is proved that the 3 % increase in risk leads to only 1 % return.
Measurement of total normal length of helical cylindrical gears by three-axis indicator on five-axis CNC machine
Authors:   Naberezhnye Chelny Institute (Branch of Kazan Federal University), Kondrashov A. G. , Safarov D. T. ,   Naberezhnye Chelny Institute (Branch of Kazan Federal University)
Published: June 2021

The article discusses a method for automated measurement of the length of the general normal of a helical cylindrical wheel, which allows to obtain its exact value without removing the part after gear processing with disk or end mills. The measurements are carried out by means of an automated supply of a three-coordinate linear measurement indicator to the calculated measurement points. The formulas for calculating the length of the general normal are given, which allow calculating the value of the length of the general normal and the correction value of the CNC gear ring processing program for two and one-point measurement schemes with the indicator. The use of the two-point method of measuring the length of the general normal with a three-coordinate indicator made it possible to measure the length of the general normal without removing the processed gear wheel from the mandrel, the single-point method completely eliminates the possibility of adjustment defects and reduces the complexity of carrying out machine changeovers in the mode of single and small-scale processing of gears. Comparison of gear measurement data with the three-coordinate indicator Mahr and a specialized CNC gear measuring machine give similar values and confirm the possibility of using the developed scheme to measure the length of the common normal
Calculation strength of torsion bar suspension of micromirrors (MEOMS)
Authors:   Omsk State Technical University, Chernyavsky D. I. , Chernyavsky D. D. ,   Omsk State Technical University
Published: June 2021

The paper considers the strength calculation of the torsion bar suspension of a micromirror with a reflective layer of high optical quality of the surface for deflecting the reflected laser beam. By changing the angle of inclination of the micromirror, the laser beam enters the various input channels of the optical sensor. In this case, a control signal is generated for the further operation of the microcircuit. Thus, the micromirror performs the function of a switch for input optical channels connecting certain input or output elements of the microcircuit in various combinations for further processing. In this work, the calculation of the strength parameters of the mechanical structure of a micromirror made of various materials has been carried out. Practical recommendations related to the development of micromirror torsion bar suspension are given
Induction motor speed control in closed loop system with thyristor voltage regulator
Authors:   Tomsk Polytechnic University, Odnokopylov I. G. , Lyapunov D. Yu. ,   Tomsk Polytechnic University, Voronina N. A. ,   Tomsk Polytechnic University, Umurzakova A. D. ,   Tomsk Polytechnic University, Khatsevskiy K. V. ,   Omsk State Technical University
Published: June 2021

There exists a huge class of actuating mechanisms based on induction motors, where the use of a thyristor voltage regulator is relevant. This paper presents studies on the introduction of the ability not only to reduce the starting current of the motor, but also to regulate the speed of rotation. Studies have been conducted on the possibility of obtaining a regulation range of 1:5 using simulation model. The influence of the resolution of the speed sensor on the accuracy of regulation is investigated. Recommendations on the implementation of the developed method of speed control are given
To play or pause: Video-based or conventional lectures in medical classrooms
Authors: Sahu Suchanda , John Joseph
Published: June 2021

Objectives:

Medical knowledge has increased by leaps and bounds over the past century, but our teaching-learning methods remain archaic, lecturing being one of the oldest. This study was conducted to assess the change in knowledge following a conventional lecture and that following a video-based lecture using a medical television (TV) serial.

Material and Methods:

The students were divided into two groups based on their registration numbers. To one group, a video-based lecture using appropriate clips from a medical TV serial was administered while the other group was taught the same topic using conventional teaching-learning method of a lecture. A pre-test and a post-test were conducted and the change in the results compared.

Results:

The mean pre-test scores were higher in the successively senior batches of students as compared to the junior batches in both groups. The post-test scores were significantly higher in both the conventional lecture and the video group. Surprisingly, the mean post-test scores in the conventional lecture group were significantly higher than that of video-based lecture group. Students preferred the video-based lecture more than the conventional lecture.

Conclusion:

Both teaching learning methods have their own advantages. The conventional lecture uses an outcome-oriented session while the video-based sessions do not. The soft skills like breaking bad news, doctor patient communication skills etc which we never teach in conventional lectures can be learnt using these video-based sessions. Thus, we need a blended approach here as well, utilising the strengths of each of the teaching learning methods so that our students can achieve the laid down competencies.
Alleviating effect of Ficus racemosa in high-fat-high-fructose diet-induced non-alcoholic fatty liver disease
Authors: Solanki Nilay D. , Vadi Kirti , Patel Sandip
Published: June 2021

Objectives:

Non-alcoholic fatty liver disease (NAFLD) is one of the chronic liver diseases. Ficus racemosa has been used for many years in the Ayurvedic medicine system and is closely related with the management of metabolic conditions. The study investigated alleviating effects of methanolic extract of F. racemosa (FRM) bark on high-fat-high-fructose (HFHF) diet -induced NAFLD.

Materials and Methods:

HFHF-based model was developed for a period of 10 weeks. In treatment groups, FRM (100 mg/kg, 200 mg/kg, and 400 mg/kg) and atorvastatin (20 mg/kg) were administered for 6 weeks after initiating HFHF diet and continued for another 4 weeks. Liver functions test, lipid profile, serum leptin, and antioxidant parameters and histopathology were evaluated.

Results:

Elevated liver enzymes, lipid markers, and leptin were observed, with significant reduction in antioxidants in disease control rats. FRM treatment significantly improved serum aminotransferase activities, lipid profile, and oxidative changes and brought back to normal. Liver histopathology showed the fatty modifications induced by the HFHF diet, and reduction in fatty changes was observed due to FRM. Significant decline in serum leptin was observed with high-dose FRM.

Conclusion:

FRM showed positive effects in the reversal of NAFLD and different polyphenolic compounds in the plant were responsible for the proven action.
Effectiveness of combined glaucoma and cataract surgery with the use of a modified anti-glaucoma surgery
Authors:   Ufa Eye Research Institute, Ufa, Orenburkina O.I. , Babushkin A.E. ,   Ufa Eye Research Institute, Ufa, Israfilova G.Z. ,   Ufa Eye Research Institute, Ufa
Published: June 2021

Purpose. To evaluate the clinical and functional results of a combined intervention – simultaneous cataract phacoemulsification (femtolaser assisted in some cases) and a developed partially fistulizing anti-glaucoma surgery in patients with primary open-angle glaucoma (POAG). Material and methods. 15 patients (45 eyes) aged 65-73 years with stage I-III POAG. The frequency of complications, dynamics of visual acuity's visual functions, and ophthalmotonus were analyzed before, during, and 6 months after surgery. Results. By the end of observation, the level of normalized IOP was defined in all patients, while in 78.6% of cases without drug correction and in 21.4% with the help of antihypertensive drugs (on average, 1.1±0.5). At the day of discharge from the hospital visual acuity after a simultaneous combined operation averaged 0.53±0.05, in the long term-0.77±0.06, while stabilization of glaucoma optical neuropathy after surgery occurred in 92.9%. Conclusion. A simultaneous combined intervention, including cataract phacoemulsification with a developed partially fistulizing anti-glaucoma operation, is an effective way to increase visual acuity, normalize ophthalmotonus and stabilize glaucoma optical neuropathy as well as reduce the drug load. Key words: cataract, glaucoma, surgical treatment, phacoemulsification, anti-glaucoma surgeries.
Results of the study of cataracts in the exposed population in the Southern Urals
Authors:   Urals Research Center for Radiation Medicine (URCRM), Chelyabinsk, Mikryukova L.D.
Published: June 2021

Epidemiological data have revealed a significant association between exposure to ionizing radiation, loss of optical lens function, and cataract formation. Residents of villages in the Southern Urals were chronically exposed to external and internal radiation in the range of «small» and «medium» doses as a result of two radiation accidents at the «Mayak» plant in the middle of the last century. Purpose. Тo investigate changes in the lens in individuals who have been chronically exposed to radiation over a long time. Material and methods. Аn analysis of the results of the examination by an ophthalmologist in the clinical Department of the URCRM of 583 people from among those who were subjected to chronic radiation exposure and their offspring was carried out. The examination was carried out according to a special in-depth program with photo fixation of changes in the lens (18 characteristics). Results. According to the results of the examination, grade 1 and 2 opacities were most often detected in all layers of the lens. More expressed changes in the lens significantly reduce vision and require earlier cataract surgery. Lens Opacities in the cortical layers are the most common type of lens pathology in the development of cataracts in all age categories. The frequency of nuclear cataracts in the study group of patients of the URCRM Clinic gradually increases with attained age from 0% under the age of 40 to 19-23% in the age groups with members aged over 70. The same tendency is observed in the increase in the intensity of yellow color in the staining of the lens nucleus. The largest changes in the posterior lens capsule were observed in the oldest age group (over the age of 80 - 22% of all the opacities at this age). Conclusion. The ophthalmological examination of patients affected by radiation accidents in the Ural region revealed an increase in cataract cases with an increase in age, which corresponds to the trends in the non-irradiated population. Key words: eye diseases; chronic radiation exposure; cortical cataract; nuclear cataract; posterior subcapsular cataract.
Research optimal conditions for storing of tissue-engineered corneas
Authors:   S.N. Fyodorov NMRC Eye Microsurgery Federal State Institution of the Russian Ministry of Health. Moscow, Borzenok S.A. ,   Federal State Budgetary Educational Institution of Higher Education «A.I. Evdokimov Moscow State University of Medicine and Dentistry» of the Russian Ministry of Health. Moscow, Kostenev S.V. ,   S.N. Fyodorov NMRC Eye Microsurgery Federal State Institution of the Russian Ministry of Health. Moscow, Doga A.V. ,   S.N. Fyodorov NMRC Eye Microsurgery Federal State Institution of the Russian Ministry of Health. Moscow, Li V.G. ,   S.N. Fyodorov NMRC Eye Microsurgery Federal State Institution of the Russian Ministry of Health. Moscow, Ostrovskiy D.S. ,   S.N. Fyodorov NMRC Eye Microsurgery Federal State Institution of the Russian Ministry of Health. Moscow, Khubetsova M.K. ,   S.N. Fyodorov NMRC Eye Microsurgery Federal State Institution of the Russian Ministry of Health. Moscow
Published: June 2021

Purpose. To compare the transparency of dehydrated and non-dehydrated tissue-engineered corneas for cryopreservation. Materials and methods. Assessment transparency of tissue-engineered corneas using spectrophotometry. For comparison, three groups were performed: 1 - control group (fresh lenticules), 2 – NaCl– group (dehydrated tissue-engineered corneas), 3 – NaCl+ group (non-dehydrated tissue-engineered corneas). The spectrophotometer data was evaluated in 2 stages. At stage 1, the transparency of the control group was measured (n=30). At the second stage, the transparency of two experimental groups after storage in DMSO (groups NaCl- and NaCl+) was investigated. Results. In the NaCl+ group, the transparency slightly decreased compared to the control, and the protocol using NaCl– was the closed to the control. Conclusion. In general, after thawing the NaCl– and NaCl+ groups slightly decrease their transparency in comparison with the control, so both groups can replace each other. Key words: storage, cryopreservation, lenticule, cornea, decellularization, tissue engineering.
Historical milestones of the Bashkir Research Trachomatous Institute
Authors:   Ufa Eye Research Institute, Ufa, Galimova Y. S.
Published: June 2021

The article is devoted to the formation and systematic development of the Bashkir Research Trachomatous Institute-the oldest eye research institution of the country , which led the work on the elimination of trachoma in the republic. The Trachomatous Institute became the coordinator of these activities: field examination work, study of the etiology of the disease, its prevention and treatment, surgical care, training of medical and junior staff, etc. The founder and first director of the Institute V.P. Odintsov was able to organize the work of the team at the appropriate level, so that the task set for the institution was completed - trachoma was eliminated. Key words: Bashkir Research Trachomatous Institute, trachoma, V.P. Odintsov, eye departments, trachomatous point of care, trachomatous dispensary.
Keratectasias and modern methods of their treatment
Authors:   Ufa Eye Research Institute, Ufa, Surkova V.K. , Khalimov A.R. ,   Ufa Eye Research Institute, Ufa, Kazakbaeva G.M. ,   Ufa Eye Research Institute, Ufa
Published: June 2021

The review article provides non-surgical (spectacle and contact correction, ultraviolet corneal crosslinking) and surgical methods (corneal transplantation, intrastromal implantation of segments and rings) for the treatment of keratoectasias and, in particular, keratoconus. The authors present their own original developments of scientists from the Ufa Research Institute of Eye Diseases in the field of cross-linking and various types of keratoplasty, as well as promising areas of clinical research on the combined treatment of keratectasias: cross-linking in combination with LASIK, intrastromal introduction of segments and rings. Key words: cornea, keratectasias, keratoconus, non-surgical and surgical methods of treatment.
Choroidal metastasis follow-up during polychemotherapy (clinical case)
Authors:   Federal State Scientific University «Research Institute of Eye Diseases», Moscow, Stoyukhina A.S.
Published: June 2021

Diagnosis of intraocular metastases does not cause difficulties in cases of oncological anamnesis in patient withs visual complaints and a characteristic ophthalmoscopic picture. In 10-20% of cases, eccentrically located metastases, are an accidental finding, which can cause difficulties in correct diagnosis establishing. A clinical case of asymptomatic bilateral multifocal choroidal metastases of small sizes is presented. Their OCT findings and the dynamics of follow-up during polychemotherapy are described. Key words: choroidal metastasis, optical coherence tomography, polychemotherapy.
An Early Warning Monitoring System for Illicit Drug Use at Large Public Events: ‘Close to Real Time’ Trace Residue Analysis of Discarded Drug Packaging Samples
Authors: West Henry , FITZGERALD JOHN , Hopkins Katherine , Li Eric , Clark Nicolas , Tzanetis Stephanie , Reid Gavin , GREENE SHAUN
Published: June 2021

Inspired by the exchange principle espoused by Edmond Locard (1877-1966), which states “every contact leaves a trace”, we report here the development and application of a strategy for trace residue sampling and analysis of discarded ‘Drug Packaging Samples’ (DPS), as part of an early warning monitoring system for illicit drug use at large public events. Using Direct Analysis in Real Time (DART) - mass spectrometry (MS) and -tandem mass

spectrometry (MS/MS), rapid and high-throughput identification and characterisation of a wide range of illicit drugs and adulterant substances was achieved, including those present in complex poly-drug mixtures and at low relative abundances, and with analysis times of less than one minute per sample. 1362 DPS were analysed either ‘off-site’ using laboratory-based instrumentation or in ‘on-site’ in ‘close to real time’ using a transportable mass spectrometer housed within a customised mobile analytical laboratory. 92.2% of DPS yielded positive results for at least one of 15 different pharmacologically active drugs and/or adulterants, including cocaine, MDMA, and ketamine, as well as numerous ‘novel psychoactive substances’ (NPS). Notably, polydrug mixtures were more common than single drugs, with 52.6% of positive DPS found to contain more than one substance, and with 42 different drug and polydrug combinations observed throughout the study. For analyses performed ‘on-site’, reports to key stakeholders including event organisers, first aid and medical personnel, and peer-based harm reduction workers could be provided in as little as 5 minutes after sample collection. Then, following risk assessment of the potential harms associated with their use, drug advisories or alerts were then disseminated to event staff and patrons, and subsequently to the general public, when substances with particularly toxic properties were identified.
On the Separation of Enantiomers by Drift Tube Ion Mobility Spectrometry
Authors: Fernandez-Maestre Roberto , Doerr Markus
Published: June 2021

Racemic mixtures of twelve common a-amino acids and three chiral drugs were tested for the separation of their enantiomers by ion mobility spectrometry (IMS)-quadrupole mass spectrometry (MS). Separations were tested by introducing chiral selectors in the mobility spectrometer buffer gas. (R)-α-(trifluoromethyl) benzyl alcohol, (R)-tetrahydrofuran-2-carbonitrile, (L)-ethyl lactate, methyl (S)-2-chloropropionate, and the R and S enantiomers of 2-butanol and 1-phenyl ethanol were evaluated as chiral selectors. Experimental conditions were varied during the tests including buffer gas temperature, concentration, and type of chiral selectors, analyte concentration, electrospray voltage, electrospray (ESI) solvent pH, and buffer gas flow. The individual enantiomers yielded different drift times for periods of up to 8 hours in a few experiments; such drift times were sufficiently different (~ 0.3 ms) to partially resolve the enantiomers in racemic mixtures, but these mixtures always yielded a single mobility peak at the experimental conditions tested with a drift time similar to that of one of the enantiomers. Energy calculations of the chiral selector –ion interactions showed that these separations are unlikely using 2-butanol as chiral selector but they might be feasible depending on the nature of chiral selectors and the type of enantiomers.
Characterization of Molecular Belts’ Shape in the Context of Porous Molecular Materials
Authors: Gomez Ismael , Haranczyk Maciej , Chaves-Salado Marta , Gómez García Ismael
Published: June 2021

Porous molecular belts are a common type of porous molecules that can be assembled into nanotube porous crystals for various applications. The inherited nature of crystal porosity allows exploiting molecular properties in order to fine-tune the nanotube crystals for specific applications. However, molecular features determining nanotube formation remain unclear. Molecular shape has been suggested as a potential aspect determining packing at crystal level, but this hypothesis has not yet been tested. In this work, we define the first set of methods to characterize the shape of molecular belts, demonstrating their application to discover nanotube crystals by screening large datasets. Moreover, we introduce and characterize (in terms of porosity, shape and chemistry) the largest available repository of molecular belts, with 4412 molecules mined from the PubChem dataset. With this study, we show that molecular shape can play a major role in solid-phase assembly of porous molecular materials, opening new avenues in molecular characterization and material discovery.
Microfluidic Droplet Detection via Region-Based and Single-Pass Convolutional Neural Networks with Comparison to Conventional Image Analysis Methodologies
Authors: Rutkowski Gregory , Azizov Ilgar , Unmann Evan , Dudek Marcin , Grimes Brian Arthur
Published: June 2021

As the complexity of microfluidic experiments and the associated image data volumes scale, traditional feature extraction approaches begin to struggle at both detection and analysis pipeline throughput. Deep-neural networks trained to detect certain objects are rapidly emerging as data gathering tools that can either match or outperform the analysis capabilities of the conventional methods used in microfluidic emulsion science. We demonstrate that various convolutional neural networks can be trained and used as droplet detectors in a wide variety of microfluidic systems. A generalized microfluidic droplet training and validation dataset was developed and used to tune two versions of the You Only Look Once (YOLOv3/YOLOv5) model as well as Faster R-CNN. Each model was used to detect droplets in mono- and polydisperse flow cell systems. The detection accuracy of each model shows excellent statistical symmetry with an implementation of the Hough transform as well as relevant ImageJ plugins. The models were successfully used as droplet detectors in non-microfluidic micrograph observations, where these data were not included in the training set. The models outperformed the traditional methods in more complex, porous-media simulating chip architectures with a significant speedup to per-frame analysis times. Implementing these neural networks as the primary detectors in these microfluidic systems not only makes the data pipelining more efficient, but opens the door for live detection and development of autonomous microfluidic experimental platforms.
Byproducts from the edible oil industry as potential adsorbent for the removal of Pregabalin from aqueous solution
Authors: Chandrarao D  , Rama Devi D  , Vani P  , Basavaiah K  , Satyabalaji T  , Narasimha Raju Ch.B.V.
Published: June 2021

Removal of Pregabalin from aqueous solution as well as industrial effluent using a new, efficient and cost-effective activated carbon derived from groundnut seed cake powder (GNSCP) and coconut cake powder (CCP) has been presented in this study. Experimentation has been carried out by optimizing various parameters such as pH, contact time, dosage, temperature and initial drug concentration using a batch adsorption model. Surface texture and morphology of the activated carbons have been analyzed by HR SEM; Characterization of the adsorbents has been carried out using FTIR and PXRD. Bio-sorption of Pregabalin using GNSCP and CCP followed pseudo-second-order kinetics. Langmuir adsorption isotherm suits the best for the present study. Thermodynamic studies showed that the adsorption of the drug onto the chosen adsorbents is a spontaneous and feasible process. The maximum adsorption capacity for the uptake of Pregabalin by GNSCP was found to be 9.71 mg/g and with CCP 9.83 mg/g. Suitability of the adsorbents for the treatment of industrial effluent has also been carried out and found to have 98 % removal of the drug from the effluent.
O direito achado na rua : introdução crítica ao direito urbanístico
Authors: Sousa Junior José Geraldo de
Published: June 2021

Os textos que se inscrevem nesta obra, procedentes de pesquisadores e pesquisadoras dos dois coletivos que a conceberam e foram convocados por chamada geral para a edição, abordam o Direito Urbanístico a partir de uma perspectiva crítica, como um campo do pensamento e da prática jurídica vocacionado às transformações sociais e urbanas necessárias para a efetivação dos direitos reivindicados pelo povo e pelos movimentos sociais, sejam eles reconhecidos pelo Estado e pelos organismos internacionais, sejam eles direitos formulados na vida social e ainda em processo de legitimação e de reconhecimento pelas diferentes institucionalidades. Na parte I, busca-se apresentar a relação entre a teoria de O Direito Achado na Rua e o conjunto de princípios, normas e fundamentos históricos e sociais do Direito Urbanístico no Brasil. Os textos aqui reunidos buscam fazer uma interface entre os fundamentos teóricos que lastreiam o Direito Urbanístico e O Direito Achado na Rua. Na parte II, estão concentrados textos que aportam reflexão e análise sobre o direito à cidade em seu aspecto teórico e prático, como núcleo fundante e paradigma do Direito Urbanístico. Os textos reunidos nesta parte II são aqueles que, de forma mais aprofundada, propõem uma reflexão sobre esse direito, seja a partir da matriz lefebvriana, seja a partir da crítica de outros autores e também da práxis dos movimentos sociais. Na parte III, os textos reunidos abordam formas concretas de lutas e experiências sociopolíticas que buscam efetivar o direito à cidade a partir das mais diversas óticas. Na parte IV, estão reunidos textos que avaliam criticamente a experiência da construção e efetivação do marco jurídico-urbanístico no Brasil, a partir da Constituição de 1988 e do Estatuto da Cidade. A parte V reúne alguns documentos históricos de difícil acesso. Assim, além dos documentos produzidos na escala nacional e internacional que refletem o processo social e político de construção do Direito Urbanístico no Brasil e no mundo, selecionamos, a título exemplificativo, documentos produzidos na escala local, a fim de demonstrar a interconexão e influência recíproca entre diferentes escalas de produção de direitos.
Impacto de la fisioterapia respiratoria en pacientes adultos mayores post Covid
Authors: Vásquez Conforme John Jairo , Anchundia Pico Carlos Gabriel , Merchan Calderon Rocío Maríanela , Loor Galarza Carolina Elizabeth
Published: June 2021

Si bien es importante la contención de los síntomas del Covid 19 y de sus nuevas variantes, así como el fortalecimiento de las vacunas. No se debe dejar por alto las afecciones que se mantiene post Covid, que ya se han denominado en el mundo científico “long Covid” y que son secuelas aun más importantes que dentro de la infección misma, y más para la población de alto riego, afecciones coronarias y respiratorias se siguen presentando después de haber superado la enfermedad. La metodología de la investigación es una revisión de tipo bibliográfica, apoyada por medios electrónicos como Google Académico, PubMed, entre otras. La fisioterapia es importante para detener los avances de las secuelas post Covid y mas en los casos de deficiencias respiratorias, el inicio de sesiones de entrenamiento físico gradual para estimular la movilidad y disminuir el compromiso pulmonar, va sin duda alguna a disminuir la mortalidad que se pueda presentar y aumentara la calidad de vida de los pacientes. La fisioterapia debe ser llevada por especialistas que conozcan las consecuencias del Covid y la misma debe estar individualizada por el tipo de paciente.
El diseño gráfico y la virtualidad de la educación
Authors: Plua Argoti Alejandro David
Published: June 2021

Cuando se habla de diseño gráfico, se le suele asociar a una expresión artística alejada del mundo frío y abstracto de los negocios. Sin embargo, con la globalización y todo lo que esto implica en términos de competencia empresarial y diversificación de los mercados, el diseño gráfico ha adquirido una importancia superlativa en cuanto al éxito o fracaso de una empresa, ya que la imagen de ésta es el primer punto de contacto con el cliente o consumidor y puede ser el último si el diseño no resulta atractivo. Debido a esto, el diseño gráfico se ha convertido en un negocio en sí mismo, dando lugar al nacimiento de múltiples factores que llevaron al diseño gráfico a ser considerado el elemento más importante a la hora de elaborar una estrategia de empresarial.
Sistema inteligente para el análisis de plagas en plantas rosas Freedom aplicando redes neuronales
Authors: Sango Viracucha Bryan Alexander , Chanaluisa Orellana Cinthya Geraldine , Llano Casa Alex Christian
Published: June 2021

La producción florícola se ha convertido en uno de los ejes principales de exportaciones en el Ecuador como son las rosas de variedad Freedom, que son comercializadas a nivel nacional e internacional. Los floricultores han llegado analizar que las rosas pueden ser infectadas por plagas y ocasionar perdidas económicas, esto ocurre por la gran cantidad de humedad relativa o por sequía, las plagas se ubican generalmente en las hojas, en los tallos y botón foliar, en donde deben ser controladas a tiempo, aplicando procedimientos como la fumigación para mantener un control sobre las rosas de variedad Freedom. El objetivo es utilizar técnicas de inteligencia artificial como Redes Neuronales mediante el análisis de imágenes obtenidas en el muestreo de las rosas para discernir entre los tipos de plagas que afecta a la variedad Freedom, usando metodología de investigación de campo como encuestas, entrevistas y observación para identificar la necesidad de la investigación realizada luego de la ejecución del algoritmo Redes Neuronales Convolucionales, se ha obtenido como resultados que es factible la comparación de facciones de cada uno de las plagas identificadas encontrando que existe dos tipos de plagas que afectan la producción y la cosecha de las rosas Freedom, en donde se tomó en cuenta el análisis por semana a través de tablas de comparación de las plagas situadas en las plantas. La utilización de técnicas de inteligencia artificial en el sector floricultor ayuda a tener un control de calidad y de estadía de las rosas variedad Freedom evitando perdidas económicas.
Oxigenoterapia a alto flujo en COVID-19
Authors: Pozo Rivadeneira Tangerine Kathina , Matute Solís María Fernanda , Moreno Castro Franklin Iván , Castillo Olvera Jonathan Alberto
Published: June 2021

La situación más crítica de los pacientes infectados por COVID-19, es cuando se desarrolla insuficiencia respiratoria, es aquí donde se generan los mayores índices de mortalidad. Hay diferentes técnicas para la oxigenación de los pacientes, están los procedimientos no invasivos como la cánula nasal de alto flujo y la ventilación mecánica no invasiva, y los procedimientos contrarios como la intubación orotraqueal. Sin embargo, en el mundo medico sigue habiendo posiciones encontradas acerca de oxigenoterapia de alto flujo. La metodología de la investigación, es una revisión bibliográfica apoyada por medios electrónicos, como fuente primaria de la obtención de la información. Las conclusiones mas relevantes es que la oxigenación de alto flujo es mas recomendada en la hipoxia leve, ya que puede reducir los índices de mortalidad por medio de una mejor oxigenación y reducción del trabajo respiratorio, sin embargo, de no tener éxito, hay que proceder a la intubación. La bibliografía consultada infiere que los pacientes jóvenes tienen más altas posibilidades de recuperación por la oxigenación de alto flujo. La oxigenoterapia de alto flujo es riesgosa para el personal médico, ya que se pueden generar aerosoles como consecuencia de la tos del paciente que infieren una alta probabilidad de contagio, sin embargo, esta se puede reducir por el uso de mascarilla.
Metallo-stannosilicates as inorganic supports to immobilization of lipase from Thermomyces lanuginosus for biodiesel production
Authors: Da Silva Danilo Antonio , De Vasconcellos Adriano , Nery Jos� Geraldo
Published: June 2021

This study reports the application of metallo-stannosilicates as potential inorganic solid matrixes for enzymes immobilization and their use as a heterogenous catalysts in enzymatic transesterification reactions for the conversion of triacylglycerides into fatty acid ethyl esters (FAEEs). Several stannosilicates were synthesized and physicochemical characterized by X-ray powder diffraction (XRD), scanning electron microscopy with energy dispersive X-ray spectrometry (SEM-EDS), Brunauer-Emmett-Teller (BET)-N2 surface area analysis and solid-state magic-angle spinning nuclear magnetic resonance (MAS NMR 29Si and 119Sn nuclei) techniques. The experimental results for enzymes immobilization were promising, especially for a nickel ion-exchanged metallo-stannosilicate, which were able to immobilize 82 +- 6% of Thermomyces lanuginosus lipase and also kept a high enzymatic activity (42 +- 3 U mg�1). Systematic catalytic reactions for conversion of refined palm oil (Elaeis guineensis) using some of these stannosilicates enzymes complexes yielded 63.3 +- 0.7% of FAEEs. It is worth noticing that, when the transesterification reaction was performed with (a) the as-made stannosilicate without enzymes and (b) the equivalent amount of immobilized Thermomyces lanuginosus lipase in its free form, the FAEEs yield sharply decreased to less than 5.0% and 6.3 +- 0.3%, respectively. This result is a clear evidence of a synergistic effect among the metallo-stannosilicates and the immobilized enzymes.
A Measurement Model of Successful Muslim Entrepreneur
Authors: Bahri Efri Syamsul , Ali Juhary , Aslam Mohd Mizan Mohammad
Published: June 2021

Approximately 1.4 billion of the world's population lives on less than USD 1 per day, and since 50% of the poorest people are in Muslim countries, the solution is to increase successful Muslim entrepreneurs. Hence, this study aims to create a conceptual model through a literature review and descriptive-qualitative approach. These were employed to determine the indicators of successful Muslim entrepreneurs and the expected factors required to provide a positive and significant effect. Meanwhile, four factors and indicators, each considered to influence successful Muslim entrepreneurs, were identified. Subsequently, the results obtained were conceptual papers and hypotheses that required testing to ensure correctness. It was also used to produce new constructs validated for the individuals and communities of Muslim entrepreneurs. Therefore, this conceptual model is hoped to motivate new, future research and has also been enhanced as a pioneer that has attempted to construct a model for successful Muslim entrepreneurs. Finally, a conceptual model was created, which is the initial contribution to solving poverty among the Muslim population in the world.
Economic efficiency of the use of "Reasil ® Humic Health" during sturgeon rearing
Authors: Оксана Юрьевна Туренко  , Vasiliev Alexey Alekseevich , Guseva Yulia Anatolyevna , Groza Elena Viktorovna
Published: June 2021

The article presents the results of the use of humic acids in the cultivation of Lena sturgeon in closed water supply installations. The use of "Reasil ® Humic Health" at a concentration of 1.5 g per 1.0 kg of mixed feed in fish feeding contributed to an increase in the productivity of Lena sturgeon by 6 %. Humic acids have a wide range of biological activity, affecting the metabolic processes in the body of animals and humans. The introduction of humic acids into the diet of sturgeon helps to increase productivity, due to the ability to stimulate the production of enzymes, reduces feed costs by 1 kg of growth. The use of Reasil ® Humic Health feed additive based on unmodified microporous humic acids from Leonardite in the diet of sturgeon contributes to an increase in profitability by 9.4 %.
Performance of Ground Anchored Walls Subjected to Dynamic and Pseudo-Static Loading
Authors: Saeidi Rashk Olia Arash , Oliaei Mohammad , Heidarzadeh Heisam
Published: June 2021

This study investigates the response of pre-stressed anchored excavation walls under dynamic and pseudo-static loadings. A finite difference numerical model was developed using FLAC2D, and the results were successfully validated against full-scale experimental data. Analyses were performed on 10, and 20-m-height stabilized excavated slopes with 60° to 90° of inclination angle with the horizon to represent an applicable variety of wall geometries. In dynamic analysis, the statically stabilized models were subjected to 0.2 to 0.6g of the dynamic peak acceleration to evaluate the effect of ground acceleration on their performance. Furthermore, pseudo-static analyses were performed on the statically stabilized models with pseudo-static coefficients ranging from 0.06 to 0.22. The results revealed that ground anchored slopes generally showed acceptable performances under dynamic loading, while higher axial forces were induced to ground anchors in higher and steeper models. Furthermore, comparing the results of dynamic and pseudo-static analyses showed a good agreement between the two methods' predictions in the mobilized axial force along the ground anchors. Pseudo-static coefficients were then proposed to replicate dynamic results, considering the slope geometry and dynamic load peak acceleration. The results revealed that higher and steeper stabilized slopes required higher values of pseudo-static coefficients to match the dynamic predictions successfully. The results indicate that pseudo-static coefficient tend to increase with the increase in dynamic load peak acceleration in any given model. Doi: 10.28991/cej-2021-03091703 Full Text: PDF
DAMAGE TO REINFORCED CONCRETE PANELS PRODUCTION BUILDINGS
Authors: Krakhmalnyy Timofey , Evtushenko Sergej
Published: June 2021

The article continues the cycle of work on the creation of an automated system for monitor-ing defects and damages. In this article, the defects and damage of prefabricated reinforced concrete wall panels are systematized, recommendations are given for assessing the tech-nical condition of the panels, recommendations for repair, and a unique scheme for replac-ing inoperative wall panels with sandwich panels is considered. The design solution for the replacement of wall panels was supplemented with drawings, as well as photographs of the installation process and the results of the project implementation.
OPTIMATION OF FIRE EXTINGUISHMENT SYSTEMS IN X STATION CENTER OF CRUDE OIL AND GAS STORAGE
Authors: Aziz Amiral , Nugroho Andre
Published: June 2021

This paper discusses some research results that were carried out to optimize the fire extinguishment system of X Station in South Sumatera. To optimize the fire extinguishing system at station X, a system modification has been done, which included: changes in the number of stockpile tank units, changes in capacity and dimensions of oil tanks, and changes in fire wall construction. With the change in capacity and dimensions, especially the storage tank unit, it is necessary to recalculate whether the water demand in the fire protection system is still sufficient according to the existing system condition. From this research, it can be concluded that the maximum flow rate of foam under the existing condition is 1631.6 gpm while the optimum ondition is 65% smaller than the existing system condition at 570.54 gpm. The cooling water flow rate of 615.09 gpm at optimum ondition is lower than the existing system conditions of 1409.33 gpm. The required water to the fire extinguishment system is 250 gpm; this value is smaller than the existing system capacity of 2074 gpm. By using performance curves of Grundfos Data Booklet, for the capacity of pump 1250 gpm, the total head pump and pump efficiency are obtained 103.48 m and 77.5 %, respectively.
Sentado en un carrusel: Fuga de capital en el Ecuador (2018-2020)
Authors: Meyer Eric Stefano
Published: June 2021

El artículo estudia el proceso de la fuga de capital desde una perspectiva monetaria. Identificamos condiciones sistémicas de la posibilidad de la fuga continua que derivan de la naturaleza de los pagos internacionales. Los datos del Ecuador para los años 2018-2020 permiten identificar un “carrusel” de endeudamiento público y adquisición de activos privados externos, proceso que interpretamos - tentativamente - como expresión de las contradicciones del proceso de acumulación periférico y su mediación por el estado-nación.
Studi Pelaksanaan Pembelajaran Kimia di SMAN 3 Mataram Secara Daring pada Masa Pandemi Covid-19 Tahun Ajaran 2019/2020
Authors: Andriyani Kiki , Wildan Wildan , Dwirani Sofia Baiq Fara
Published: June 2021

Covid-19 memberikan dampak bagi dunia pendidikan sehingga pemerintah Indonesia membuat kebijakan dalam menyikapi wabah Covid-19 ini dengan memberlakukan prinsip social distancing pada seluruh lapisan masyarakat, akibatnya  diberlakukannya pembelajaran daring. Penelitian kualitatif ini bertujuan untuk mendeskripsikan pelaksanaan pembelajaran kimia secara daring di SMAN 3 Mataram dimasa pandemi Covid-19. Pengumpulan data dilakukan dengan wawancara, observasi, dan kuesioner yang diisi secara daring oleh siswa. Responden terdiri dari 4 guru kimia, Wakasek kurikulum, dan 45 peserta didik. Penelitian ini menggunakan teknik analisis kualitatif. Hasil penelitian menyimpulkan ada perbedaan pelaksanaan pembelajaran kimia secara daring dan luring. Perbedaan tersebut dalam perencanaan pembelajaran mulanya melaksanakan Workshop. Kegiatan pendahuluan berupa menginstruksikan peserta didik melalui WhatsApp untuk memulai pembelajaran, mengisi absensi yang sudah disediakan, menyampaikan tujuan dan materi pada pertemuan sebelumnya. Kegiatan inti berupa penyampaian materi melalui Google Classroom, Zoom, ataupun WhatsApp dengan durasi 30 menit, kemudian mengisi LKPD, dan  Kegiatan penutup dengan diberikan latihan soal melalui Google Form dan diakhiri dengan do’a. Evaluasi pembelajaran menggunakan Google Form dan evaluasi harian dilaksanakan dengan memanfaatkan Google Classroom.Bentuk soal penugasan ataupun ulangan berupa pilihan ganda dan uraian. Kendala yang dihadapi antara lain jaringan internet, WiFi yang error, tidak memiliki kuota internet, pulsa, handphone, dan kurang memahami materi. Berdasarkan penelitian ini direkomendasikan sebaiknya lebih meningkatkan fasilitas pembelajaran daring, pembelajaran kimia selama pandemi Covid-19 dilaksanakan secara tatap muka dengan Zoom atau Google Classroom, dan membuat suasana kelas lebih menyenangkan.
Especies de Phytophthora asociadas a agua de irrigación en el Valle de Culiacán
Authors: Cardenas rodriguez Josue , Yáñez Juárez Moisés Gilberto , López Orona Carlos Alfonso , Ayala Tafoya Felipe , López Urquidez Guadalupe Alfonso , Romero Gómez Sergio de Jesús
Published: June 2021

En México existen escasos estudios que describen a los cuerpos acuáticos empleados para la agricultura y el rol que tiene el agua de riego como fuente de inóculo, persistencia y dispersión de parásitos fitopatógenos, tal es el caso de los oomycetes que habitan ambientes acuáticos con capacidad de infectar un amplio rango de hospedantes cultivados. Debido a la falta de información sobre qué géneros y especies de oomycetes están presentes en el agua, su identificación es de suma importancia para gestionar alternativas de manejo y control de estos para la producción agrícola en la región. Con el objetivo de determinar qué oomycetes se aíslan en aguas superficiales empleadas para la irrigación en el Valle de Culiacán, Sinaloa, en el periodo comprendido de septiembre de 2018 a enero de 2019, en diferentes redes hídricas agrícolas (presas, estanques, ríos y canales), se colocaron trampas flotantes elaboradas con bolsas de polipropileno y dos frutos de pera que sirvieron como cebo. Se obtuvieron aislados de oomycetes, los cuales se identificaron en base a sus características morfológicas y secuencias de ADN (con los iniciadores ITS 4/6, COX y NADH), también se realizaron pruebas de patogenicidad en plantas y frutos de las familias de solanáceas y cucurbitáceas. Se aislaron e identificaron los organismos: Phytophthora parsiana, P. virginiana, P. lagoariana, P. capsici y P. hydropathica. Todas las especies de Phytophthora resultaron patogénicas, tuvieron capacidad de infectar plantas y frutos, causando síntomas de marchitez y pudrición en las hortalizas inoculadas.
The Role of Artificial Intelligence in Human Resource Management
Authors: Vasantham Dr. S. Tephillah
Published: June 2021

This paper deals with the Role of Artificial Intelligence (AI) in Human Resource Management (HRM). We can see in the present globalized world, the customary methods of how business is directed are being tested. There could be not, at this point just nearby firms as contenders, yet associations need to contend continually on a worldwide level as innovation is making the world more modest. This infers that for an association to keep awake to date and maintain an upper hand and accepting these new mechanical advancements is critical. HRM includes a wide range of viewpoints, like preparing workers, enrollment, representative relations, and the advancement of the association. People fill in as a wellspring of information and ability which each association can and should draw on. Hence, obtaining and holding these kinds of workers through enrollment assume a major part today. Because of the significance Human Resource (HR) has for the association, the enrollment interaction by which all this asset is acquired is the way to progress. The enlistment cycle used to be longer and take a lot of time and suggest a lot of administrative works for the spotters, anyway this has as of now gradually began to change with online enrollment getting normal. This paper deals with the various applications and the advantages of implementing Artificial Intelligence in Human Resource management.