bluuebunny/crossref_metadata_2025 huggingface dataset:
Fatty acid profile of the liver lipids under acute fungicide action and intake of a biologically active preparation in rats
Authors:   National University of Life and Environmental Sciences of Ukraine, Kyiv, Khyzhnyak S. V. , Midyk S. V. ,   National University of Life and Environmental Sciences of Ukraine, Kyiv;, Velinska A. O. ,   National University of Life and Environmental Sciences of Ukraine, Kyiv;, Arnauta O. V. ,   National University of Life and Environmental Sciences of Ukraine, Kyiv;, Kalachniuk L. Н. ,   National University of Life and Environmental Sciences of Ukraine, Kyiv;
Published: November 2022

The widespread use of fungicides in agriculture leads to a negative consequences for both humans and the environment. The acute effect of fungicides containing tebuconazole alone or in combination with triadimefon on fatty acid (FAs) composition of the total lipids in the liver of rats was studied. FAs content was analyzed by gas chromatography with the use of flame ionization detector. The results obtained indicate that the acute effect of triazole fungicides one-time oral administration to rats is characterized by toxic reactions and is accompanied by the total liver lipids FAs profile redistribution, similar for the studied fungicides. In particular, the reduction in the total content of monounsaturated FAs (by 26% – 37%) and in the ω3/ω6 ratio was observed. It was demonstrated that the subsequent two-week introduction of the preparation based on Milk thistle seeds oil extract had a positive effect and improved the FAs profile of lipids in dynamics after fungicide intake. Keywords: fatty acids, fungicides, Milk thistle seeds extract, rat liver lipids, triazoles
Lipid parameters in the blood of coronary artery diseases patients depending on age and dietary components: a case study
Authors:   Department of Biochemistry, K. J. Somaiya Medical College and Research Mumbai, India, Prasad S.
Published: November 2022

Coronary artery disease (CAD) is the major cause of mortality worldwide and is defined as an elevated level of atherogenic cholesterol and low levels of HDL cholesterol. However, very few studies have been conducted in India on the association of blood lipid profile with age and diet. The study aims to estimate lipid parameters in the blood of CAD patients aged 40-70 years on different diets. Lipid parameters were analyzed by enzymatic method on EM-200 fully automated Biochemistry analyzer. The data obtained showed that the majority of patients who suffered from CAD were between the age group of 51-60 years. Patients with CAD had altered lipid profiles, with higher levels of serum TGs, total cholesterol and low levels of HDL. Vegetarians have been found to have reduced lipid risk factors for coronary heart disease compared to patients on a mixed diet. Keywords: age, cholesterol, coronary artery disease, dietary components, HDL, triglycerides
Studies of the molecular basis of eukaryotic transcription. Roger Kornberg the Nobel prize in Chemistry 2006
Authors:   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kiyv, Matyshvska O. P.
Published: November 2022

The Nobel Prize in Chemistry 2006 was awarded to an American biochemist and professor of structural biology at Stanford University Roger Kornberg for his fundamental research on the molecular mechanisms of copying genetic information in eukaryotic cells. What are these molecular mechanisms? How is transcription complex formed and what is its structure? R. Kornberg devoted tirelessly 20 years of his work to answer these questions. The article is focused on his research and also describes Roger Kornberg’s life and scientific career. Keywords: DNA, protein crystals, RNA, RNA polymerase II, Roger Kornberg, transcription, transcription complex
Integral methodology simulation support for the improvement of production systems job shop. Metalworking applications in SMES
Authors: Giraldo García Jaime Alberto , Sarache Castro William Ariel , Castrillón Gómez Omar Danilo
Published: November 2022

Metalworking companies represent one of the strategic sectors in the regional economy of the Caldas department in Colombia; in fact, this sector is involved in 31% of the departments industrial establishments and 29% of industrial employment according to DANE (Colombian State Statistical Department) statistical data from 2005. The sector also exports to Andean countries. However, preliminary studies conducted with 57% of the entrepreneurs from this sector (excluding micro companies and family businesses) have revealed serious structural (technology, processing, installations) and infrastructure weaknesses (production planning, quality systems) in these organisations production systems. It is hoped that this paper will lead to disseminating the results amongst the academic community of implementing a comprehensive methodology for improving the production system of a pilot company from this particular sector. An experimental framework for improving the levels reached by the system regarding such priorities is proposed following universally accepted methodology in discrete simulation studies; it proposes using sequential bifurcation, factorial design and response surface experimentation based on defining and weighting the competing priorities which the company should achieve. The improvements in the pilot companys production system priorities are presented in terms of an effectiveness index (EI) which rose from 1.84 to 2.46 by the end of the study.
Soybean epoxide production with in situ peracetic acid using homogeneous catalysis
Authors: Boyacá Mendivelso Luis Alejandro , Beltrán Ángela Aurora
Published: November 2022

Using vegetable oils has become an excellent option for petrochemical product substitution. The epoxides obtained from such oils have wide applications as plastifiers and PVC stabilisers and as raw material in polyol synthesis for the polyurethane industry. This paper presents soybean oil epoxidation using a homogeneous catalyst in a well-mixed, stirred reactor being operated in isothermal conditions. The best result achieved was a 6.4% oxyrane oxygen content using hydrogen peroxide (25% molar excess), acetic acid (5% p/p) and sulphuric acid (2% p/p) concentrations at 80°C.
Time series forecasting using cascade correlation networks
Authors: Velásquez Juan David , Villa Fernán Alonso , Souza Reinaldo C.
Published: November 2022

Artificial neural networks, especially multilayer perceptrons, have been recognised as being a powerful technique for forecasting nonlinear time series; however, cascade-correlation architecture is a strong competitor in this task due to it incorporating several advantages related to the statistical identification of multilayer perceptrons. This paper compares the accuracy of a cascade-correlation neural network to the linear approach, multilayer perceptrons and dynamic architecture for artificial neural networks (DAN2) to determine whether the cascade-correlation network was able to forecast the time series being studied with more accuracy. It was concluded that cascade-correlation was able to forecast time series with more accuracy than other approaches.
Numerical modeling of the fracture process in reinforced concrete by means of the continuum strong discontinuity approach. Part I: formulation
Authors: Linero Segrera Dorian Luís , Oliver Javier , Huespe Alfredo E.
Published: November 2022

Reinforced concrete structures generally refers to beams, columns and walls which are constituted by complex lattices of steel bars embedded in a concrete matrix, exhibiting multiple cracks due to high external loads. This paper presents the formulation of a numerical model aimed at describing the fracture process in reinforced concrete, from the volumetric ratio of concrete and steel Crack formation and propagation in a composite material is described in the model by an enhanced strain field, such as that established in the continuum strong discontinuity approach and mixture theory. The composite material is constituted by a concrete matrix and one or two steel bar orthogonal packages. The steel and concrete are represented by a one-dimensional plasticity model and a scalar damage model having different tension and compression strength, respectively. The dowel action and the bond-slip effects between the bars and the matrix are described with additional models relating component material stress and strain. It is concluded that the proposed model can easily be implemented in the finite element method, due to several conventional nonlinear numerical process characteristics which remain. The model would also allow the problem to be analysed at macroscopic scale, thereby avoiding a finite element mesh having to be constructed for each component material and its interaction effects and reducing computational costs.
Evaluating the effect of temperature on biodiesel production from castor oil
Authors: Guerrero Fajardo Carlos Alberto , Osorio León Iván David , Sierra Vargas Fabio Emiro
Published: November 2022

Problems arising between biofuels and food as raw materials have led to investigating the use of inedible raw materials for their production. This work was aimed at studying the effect of temperature on converting castor oil in biodiesel production. Oil transesterification with methanol was carried out using an alkaline catalyst (0.5% NaOH - water solution) for 1 hour using a 6:1 alcohol/oil molar ratio, at atmospheric pressure and taking temperature as a free variable. The temperature was evaluated at 68°F, 86°F, 104°F and 122°F. The reaction products were analysed by gas chromatography (CG-FID) for quantifying the fatty acid methyl esters (FAME) present. The results showed different dispersion depending on temperature, finding that 122°F resulted in less dispersion than the others. CG-FID analysis showed that most FAME content was reached at 122°F, such temperature giving the highest ricinoleic acid conversion rate. Gas chromatography also revealed that reaction time was adequate, in process conditions, for obtaining ricinoleic acid-based 94.26% conversion.
Identifying a greenhouse climate model by using subspace methods
Authors: Ruiz Palacios Fredy Orlando , Cotrino Badillo Carlos Eduardo
Published: November 2022

This paper presents the development of a climate dynamics model for a greenhouse located on the Bogota plateau. A black-box model was estimated from experimental data, considering a novel system structure derived from a first principles model and experimental tests. It considered two control volumes, one given by the air over the crop and a second one formed by the air trapped by crop foliage. The model was selected from a set of linear, discrete-time, state-variable systems using subspace identification methods. The estimated system was able to predict climate dynamics for both control volumes, having errors below 8%. Such performance was comparable to previous work reported in literature while the obtained model was a low-complexity linear system.
A comparative study of corrosion resistance in CrN and CrN/Cr coatings, electrodeposited chromium and epoxy paints
Authors: Torres Magda , Chipatecua Yuri , Marulanda Cardona Diana Maritza , Olaya Florez Jhon Jairo
Published: November 2022

This work was aimed at comparing the corrosion resistance of CrN and CrN/Cr coatings deposited through unbalanced magnetron sputtering (UBM), Cr industrial coatings and epoxy paints. UBM coatings were optimised and produced at room temperature, using 400 mA discharge current. Ar and N2 flow rates were set at 9 standard cubic centimetres per minute (SCCM) and 3 SCCM, respectively. Deposition times were set to produce CrN monolayers and nanometric multilayers having 1μm total thickness and 100 nm period. Coating microstructure was determined through scanning electron microscopy as texture and crystalline phases were determined using x-ray diffraction and infrared spectroscopy. Corrosion resistance was studied with anodic polarisation tests using 0.5M H2SO4 and 0.05M KSCN solution. Nanometric multilayers improved stainless steel corrosion resistance and it was observed that coated CrN steel A36 could be an alternative for replacing stainless steel in acid environments. Corrosion mechanisms for the coatings so deposited are discussed.
Parametric linear programming for a materials requirement planning problem solution with uncertainty
Authors: Arango Serna Martin Darío , Serna Conrado Augusto , Pérez Ortega Giovanni
Published: November 2022

Using fuzzy set theory as a methodology for modelling and analysing decision systems is particularly interesting for researchers in industrial engineering because it allows qualitative and quantitative analysis of problems involving uncertainty and imprecision. Thus, in an effort to gain a better understanding of the use of fuzzy logic in industrial engineering, more specifically in the field of production planning, this article was aimed at providing a materials requirement planning (MRP) problem with uncertainty in the automotive industry; this was solved using fuzzy parametric linear programming.
Evaluating the corrosion resistance of UBM-deposited Cr/CrN multilayers
Authors: Chipatecua Godoy Yuri Lizbeth , Marulanda Cardona Diana Maritza , Olaya Flórez Jhon Jairo
Published: November 2022

This work was aimed at evaluating the corrosion resistance of multilayer Cr/CrN coatings deposited by the unbalanced magnetron sputtering (UBM) technique. Coatings were produced at room temperature using 400 mA discharge current, 9 sccm argon flow and 3 sccm nitrogen flow. The total thickness of coatings deposited on AISI 304 stainless steel and silicon (100) varied between 0.2 a 3 μm as bilayer period varied between 20 and 200 nm. Coating microstructure and chemical composition was studied through scanning electron microscopy (SEM) and texture and crystalline phases were analysed by X-ray diffraction (XRD) before and after corrosion tests which were carried out by potentiodynamic polarisation using 0.5 M H2SO4 + 0.05M KSCN solution. Lower bilayer period coatings presented better corrosion resistance and their corrosion mechanism is discussed in this article.
A high unburned carbon fly ash concrete's performance characteristics
Authors: Valderrama Claudia Patricia , Torres Agredo Janneth , Mejía de Gutiérrez Ruby
Published: November 2022

Engineering today requires that structures are strong and durable; the latter concept is a decisive factor in their design and construction. The scientific community continues developing new cementitious materials and improving traditional concrete's properties, specifically reducing permeability by incorporating materials such as pozzolans. This paper analyses the effect of fly ash (FA) added to concrete on mechanical strength regarding compression, capillary absorption and chloride permeability and their behaviour compared to concrete containing silica fume (SF). An optimum 10% mechanical strength was found for fly ash; however, this increased with addition, resulting in positive effects on durability. Fly ash had lower performance for all properties evaluated when compared to silica fume.
Using ultrafine particles from a coal washing plant in metallurgical coke production
Authors: Gutierrez Bernal Jesús Manuel , Mora Pulido William Fernando , Rodríguez Varela Luís Ignacio , Ramírez Javier , Díaz Velásquez José de Jesús
Published: November 2022

Blending ultrafine particles from a coal washing plant was studied for coke production by briquetting using 6%w coal tar as binder. The ultrafine coal particles were characterised and a pilot coking test was made in a Koppers' furnace. Coke quality was evaluated by proximate analysis, stability (micum 10 and micum 40), coke reactivity index (CRI) with CO2 and the coke's mechanical strength after reaction with carbon dioxide (CSR index). Briquetting results showed that was possible to obtain coke having 19.0 % CRI and 75.6% CSR, these being the characteristics required in metallurgical processes.
Synthesising unsaturated fatty alcohols from fatty methyl esters using catalysts based on ruthenium and tin supported on alumina
Authors: Echeverri David Alexander , Rios Luis Alberto , Marín Juan Miguel
Published: November 2022

Most promising catalysts for synthesising unsaturated fatty alcohols are based on group 8 metals with a promoter like tin, because the process can be carried out in moderate conditions, and these metals are less toxic than chromium. There have been no reports about the use of this catalyst to date using raw materials like methyl ester blends or evaluation reusing catalysts. This paper presents the hydrogenation of methyl esters from palm oil and commercial methyl oleate with Ru-Sn/Al2O3 catalysts prepared by impregnation, at moderate pressure and temperature (5 MPa and 270°C). Greater selectivity to unsaturated alcohol and the less selectivity to methyl stearate was found for an optimal Sn:Ru=2 ratio. Hydrogenation of palm oil methyl esters with this catalyst produced a mixture of oleyl alcohol, saturated alcohols having 16-18 carbon atoms and heavy esters. Raw material had no great effect on catalyst activity. However, the catalyst showed deactivation through several uses due to decreased catalytic area.
Using traditional heuristic algorithms on an initial genetic algorithm population applied to the transmission expansion planning problem
Authors: Escobar Z. Antonio H. , Gallego R. Ramón A. , Romero L. Rubén A.
Published: November 2022

This paper analyses the impact of choosing good initial populations for genetic algorithms regarding convergence speed and final solution quality. Test problems were taken from complex electricity distribution network expansion planning. Constructive heuristic algorithms were used to generate good initial populations, particularly those used in resolving transmission network expansion planning. The results were compared to those found by a genetic algorithm with random initial populations. The results showed that an efficiently generated initial population led to better solutions being found in less time when applied to low complexity electricity distribution networks and better quality solutions for highly complex networks when compared to a genetic algorithm using random initial populations.
Collision-free path planning in multi-dimensional environments
Authors: Cárdenas Edwin Francis , Mendez Luis Miguel , Sofrony Esmeral Jorge
Published: November 2022

Reliable path-planning and generation of collision-free trajectories has become an area of active research over the past decade where the field robotics has probably been the most active area. This paper' s main objective is to analyse the advantages and disadvantages of two of the most popular techniques used in collision-free trajectory generation in n-dimensional spaces. The importance of analysing such techniques within a generalised framework is evident as path-planning is used in a variety of fields such as designing medical drugs, computer animation and artificial intelligence and, of course, robotics. The review provided in this paper starts by drawing a historical map of path-planning and the techniques used in its early stages. The main concepts involved in artificial potential fields and probabilistic roadmaps will be addressed as these are the most influential methods and have been widely used in specialised literature.
The influence of the blast furnace slag replacement on chloride penetration in concrete
Authors: Lizarazo Marriaga Juan , Claisse Peter
Published: November 2022

Corrosion of steel reinforcement due to chloride penetration is the greatest cause of durability problems in concrete; intense international research has been carried out to understand and avoid this. This paper summarises the results of a theoretical and experimental research programme investigating the influence of blast furnace slag on chloride-related transport properties. The relationship between the apparent chloride diffusion coefficient, electrical resistivity and compressive strength was measured. Chloride, hydroxide, sodium and potassium's intrinsic diffusion coefficients were obtained by using a computational model and an electrical migration test. The initial hydroxide composition of the pore solution, porosity and chloride binding capacity were also determined from the model. The results showed that blast furnace slag improved chloride penetration resistance, resulting in concrete which was less vulnerable to corrosion.
Numerical flow solutions on a backward-facing step using the lattice Boltzmann equation method
Authors: Florez Elkin , Carranza Yamid , Ortiz Yesid
Published: November 2022

Numerical solutions of 2-D laminar flow over a backward-facing step using the lattice Boltzmann equation method (LBEM) are presented in this article. Unlike conventional numerical schemes based on macroscopic continuum equation (mass conservation and Navier-Stokes) discretisation, the LBEM is based on microscopic models and mesoscopic kinetic equations. The simulations were validated for a wide range of Reynolds numbers (100 ≤ Re ≤ 1,000), comparing them to previous studies. Several flow features, such as primary and secondary vortex location at the bottom and top of the wall, respectively, were investigated regarding Reynolds number. Two typical classes of boundary condition were implemented in the LBEM model: the Drichlet condition at the inlet flow (parabolic speed profile) and the Newman condition at the outlet flow (zero gradient speed). The results showed that the LBEM gave accurate results over a wide range of Reynolds number; these were compared with other numerical methods and experimental data.
A coordination agents' model for the Colombian shipbuilding industry's logistics system
Authors: Adarme Jaimes Wilson , Arango Serna Martín Darío , Balcázar Delio Alexander
Published: November 2022

This paper presents the results of research carried out by the GICO and SEPRO research groups affiliated to the Universidad Nacional de Colombia regarding the Colombian shipbuilding industry to coordinate autonomous agents in a supply chain (SC), in a decentralised environment, where buyers (shipbuilders) have a project system setting production. An exact multi-criteria linear programming model was developed for this purpose; it was aimed at reducing the deficit in meeting demand and minimizing logistical costs incurred by all SC members, considering autonomy as being inherent to them, and the need to coordinate logistical operation through knowledge of customer demand and suppliers' target planning ability. The proposed model was able to reduce total costs by 0,047%monetary units, and explicitly identify logistical costs as a chain complex.
Evaluating drag force and geometric optimisation of pipeline inspection gadget (PIG) body with bypass
Authors: Ramírez Ricardo , Dutra Max
Published: November 2022

A pipeline inspection gadget (PIG) is a device used to run through pipelines for cleaning, measurement and inspection operations. By-pass is the name for one or a set of orifices allowing flow from back to front of a PIG. It is used for speed control or to improve cleaning operations results. By-pass prevents speed excursions in gas pipelines thereby avoiding damage to the PIG or the pipe. Studies and algorithms have been developed to simulate the dynamics of PIGs running inside pipes. Most studies have been for gas pipelines; these have helped to design some PIG models. This work summarises a particular stage during a PIG design project. This PIG will work in liquid pipelines and can stop in the line for inspection and maintenance tasks. Studying fluid force on a PIG when it has low or zero speed is needed for evaluating project feasibility and conceptual design. Selecting a PIG form to minimise the force of interaction with fluid allows a low weight design and lower energy loss.
The role of ursodeoxycholic acid in the treatment of hepatobiliary diseases in children
Authors:   Bogomolets National Medical University, Kyiv, Ukraine, Marushko Yu.V. , Dmytryshyn O.A. ,   Bogomolets National Medical University, Kyiv, Ukraine, Dmytryshyn B.Ya. ,   Bogomolets National Medical University, Kyiv, Ukraine,, Bovkun O.A. ,   Bogomolets National Medical University, Kyiv, Ukraine, Iovitsa T.V. ,   Bogomolets National Medical University, Kyiv, Ukraine
Published: November 2022

It is a well-known that a significant part in the structure of the digestive system diseases in children compounds disorders of the biliary tract, which are based on violations of the regulation of bile production and bile secretion. The topical issue is the search for safe and effective drugs that can prevent the transformation of biliary disorders into organic pathology, including cholecystitis, gallstone disease. One of such drugs is ursodeoxycholic acid (UDCA), which is actively use in pediatrics due to its hepatoprotective, immunomodulatory, choleretic, anticholestatic and other properties. The results of the literature review indicate that UDCA therapy provides various clinical effects: it improves liver function by lowering the level of liver enzymes, prevents the progression of liver diseases. In addition, its influence on the transformation of functional changes into organic pathology, especially in patients with diseases of the hepatobiliary tract associate with cholestasis, and is an alternative option for the treatment of chronic liver disease. Proven therapeutic efficacy, high quality and safety of UDCA create the prospect of including this drug in the treatment of children with functional and organic diseases of the liver and biliary tract. No conflict of interests was declared by the authors.
Production Function According to Yusuf Qardhawi in Islamic Economics
Authors: Darmawansyah Trisna Taufik , Amalia Husnayaini , Aguspriyani Yani
Published: November 2022

Economic activities, one of which is production, is taught in the Qur'an. In the context of Islamic economics, a Muslim producer must behave in accordance with the norms and ethics of Islamic economic production. It takes a knowledge and understanding of production behavior according to Islam in order to fulfill this behavior. Knowledge of a concept greatly influences a person's behavior. Yusuf Qardhawi's thoughts on the factors of production are that production only has two main elements, namely natural resources and human resources in the form of labor. Yusuf Qardhawi further explained that natural resources are very much needed to be managed by humans, therefore, in production, labor is needed. New production appears when there is a combination of work between human resources and natural resources. While the capital factor is not included in the main factor because capital is nothing more than the result of human labor that is stored. Another reason capital is not included is because this problem is related to usury which is forbidden. Meanwhile, other elements such as organization are only supervision, regulation and production strategy.
Vivimos ante un paradigma de cambio constante o un cambio de paradigma: «Blockchain» y su promesa transformadora
Authors: Aragonés-Ferri Lluis
Published: November 2022

La crisis financiera de 2008 puso en entredicho la eficiencia del sistema monetario. Ese shock desembocó en una innovsación sin precedentes en el uso de financas y tecnología, y en nuevos modelos e negocio.
Humanizar la empresa y hacerla más competitiva
Authors: Sinde Juan-Manuel
Published: November 2022

El modelo de empresa creado por José María Arizmendarrieta pretende humanizar la empresa  a la vez que mejorar su competitividad y sostenibilidad. Todo ello sin dejar de generar beneficio y valor social.
The vocalism system of accents of the Tatar villages, Kolyvan district, Novosibirsk region (on materials of the expedition 2017)
Authors: Badrtdinova Alsu
Published: November 2022

The article provides the phonetic analysis of the local dialect vowels in comparison
with the system of vocalism of the middle dialect of modern Tatar language on the basis of materials of the exhibition held in June 2017 by the scholars and the post-graduate students of the I. Ibragimov Institute of Language, Literature and Art, the Academy of Sciences of the Republic of Tatarstan in the Tatar villages Yurt-Ory and Yurt-Akbalyk of Kolyvan district, Novosibirsk region. These villages are home of the native speakers of chat speech of the tomsk dialect of the Tatar language, which refers to the eastern dialect. It also considers the research works by D.G. Tumasheva (1968), D.B. Ramazanova (2016), O.R. Khasanov (2013, 2016) who is the permanent organizer of exhibitions to the regions of Siberia and the author of numerous articles on the language and the history of the territories under examination, the book “Tatar national speeches” (2008), the academic publication of “Tatar Lexicology” (2016). Also, when writing the article we referred to the Electronic Atlas of the Tatar national speeches for reconciliation. It includes the list of differentiational characteristics of vowels, differences in the laws of synharmonysm. It also contains the fragments from records transcription made during the exhibition.
STUDY OF HEAT TRANSFER IN A MONOLAYER BALL PACKING
Authors: Dekhtyar Ruslan A. , Ovchinnikov V. V.
Published: November 2022

The features of nonstationary heat transfer of one layer of balls of the same size were studied in a fixed layer of liquid. The experiments were carried out in a cylindrical thermostat with a diameter of 128.9 mm filled with glass balls of 8.9 and 16.0 mm diam and polyoxymethylene balls of 9.0 mm diam with the highest possible packing density. The ball packing was filled with distilled water to a level of 0.1-0.2 mm higher than the ball diameter. The temperature of the ball packing surface was measured using a NEC 7100 thermal imager with a step change in temperature at the outer boundary of the packing. It is shown that, for a monolayer of balls of the same size in a stationary liquid, the temperature field is symmetrical relative to the packing center and the value of the effective thermal conductivity coefficient is constant over the packing cross section, both during heating and cooling. It has been found that the heat transfer coefficient and the time for establishing thermal equilibrium of a ball packing in a layer of stationary liquid at the same temperature difference depend on the heat flux direction at the packing boundary. The numerical values of the characteristic time of thermal equilibrium establishment in the heating and cooling regimes differ from each other by several times; whereas in the water layer without balls, this difference does not exceed 30%.
COMPARATIVE EVALUATION OF THERMAL AND HYDRAULIC PERFORMANCES OF SERIES AND PARALLEL SPACE RADIATORS
Authors: Pillai Anek Venudas , Hazarika Moon Bakaya , Goel Rishabh , Gupta Harsh Prateek , Kumar Bharat , Prabhu Sreenivas Naveen Chandra
Published: November 2022

Fluid-pumped radiators are widely used to dissipate thermal load from orbiting space capsules to maintain the desired temperature range. Fluid circulated through the heat generating systems are pumped through the space radiator, which in turn dissipates energy to deep space. Based on the flow path, radiators are classified into series and parallel radiator configurations. As part of realizing radiators for future space missions, experimental studies are carried out in a thermovac chamber to assess the thermal and hydraulic performances of space radiators and compare them for different configurations and working fluids. The paper details the experimental schematics for the different studies, the results of the experiments, and their validation. Series radiator configuration is found to have better thermal performance but lower hydraulic performance compared to parallel radiator configuration. Working fluids with higher specific heat are found to give better thermal performance. A configuration that gives optimum performance in terms of thermal performance and pumping power is evolved based on the studies.
Learners’ Preference: A Reason to Use Code-Switching in Teaching and Learning Short Stories in Grade X English
Authors: Dema Damchu
Published: November 2022

Code-switching is a phenomenon where there is an alternation between two or more languages or dialects within a sentence in a conversation. It can be used as one of the strategies of teaching short stories in the Bhutanese classrooms. However, in Bhutan, English being the medium of instruction, teachers and students are obliged to communicate only in English in the class. This impedes students reasoning, critical thinking skills and the overall learning process both within the classroom and outside the learning environment. Impacts and factors leading to code-switching in teaching literary texts has been widely explored in other countries. However, very little research has been carried out in Bhutan. Hence, this study explored the factors leading to code-switching in L2 classrooms to teach short stories to grade X students of one of the higher secondary schools in Trongsa dzongkhag. It also attempted at examining the perception and attitudes of English teachers and learners towards code-switching in the teaching and learning of short stories. The study was conducted using mixed methods: integrating structured survey questionnaires and semi-structured interview and the data were analyzed using descriptive analysis. Thus, the researcher found the significant factors such as, difficulty in comprehending the new concepts, new vocabularies and pronunciation and to encourage students’ participation in the class which leads to the use of L1. Further, it also found that both teachers and students have positive attitudes towards the use of code-switching as a technique to teach short stories to grade X students in English as a Second Language classroom but not to use as frequently as they wished to.
Los estudios organizacionales en Colombia: Aproximaciones, diversidad y desarrollo
Authors:   Universidad Externado de Colombia, Anzola-Morales Olga Lucía , Carvajal Orozco José Gabriel ,   Universidad Nacional de Colombia, Gentilin Mariano ,   Universidad EAFIT, Gómez-Villegas Mauricio ,   Universidad Nacional de Colombia, Gonzales-Miranda Diego René ,   Universidad EAFIT, López Isaza Giovanni Arturo ,   Universidad Tecnológica de Pereira, Marín-Idárraga Diego Armando ,   Universidad Jorge Tadeo Lozano, Montoya-Restrepo Iván Alonso ,   Universidad Nacional de Colombia, Montoya-Restrepo Luz Alexandra ,   Universidad Nacional de Colombia, Ocampo-Salazar Carmen Alejandra ,   Universidad EAFIT, Sanabria Mauricio ,   Universidad del Rosario, Sanabria Rangel Pedro Emilio ,   Universidad Militar Nueva Granada, Sepúlveda Fernández Roger ,   Universidad del Atlántico
Published: November 2022

Las apreciaciones que se recogen en esta obra evidencian la posición y las conversaciones de un grupo particular de investigadores que llevan a cabo sus indagaciones y reflexiones desde los estudios organizacionales, saber que en Colombia está aún en construcción. Estos desarrollos no reflejan integralmente la realidad del país y no incluyen los múltiples temas y aproximaciones que existen, pero constituyen una muestra importante de la mirada académica a nuestro contexto. Por lo tanto, busca ser un punto de inicio, no solo para seguir comprendiendo y rastreando la evolución de los estudios organizacionales, sino para invitar a otros a unirse a la conversación, a disentir, a generar controversia y, gracias a ello, a seguir aprendiendo todos juntos de este campo de conocimiento.
Severe polycystic liver disease: An unsual cause of chronic Budd-Chiari Syndrome
Authors: Aboutarik Fatima Ezzahra , Dassouli Cherihane , Ait Errami Adil , Oubaha Sofia , Samlani Zouhour , Krati Khadija
Published: November 2022

Autosomal dominant polycystic kidney disease is a hereditary disease, characterized by the development of cysts in the renal parenchyma with extra-renal manifestations. Liver damage is rarely a source of complications. A Budd-Chiari syndrome could occur following the compression of the supra-hepatic veins by the cysts. It is an exceptional mechanical complication. We present a case of a 54 year old woman, with a diagnostic of an asymptomatic autosomal dominat polycystic kidney disease since childhood was admitted to our hospital due to significantly increased abdominal girth. The physical examination showed grade III ascites. A paracentesis for relief at admission disclosed an exudative fluid. A abdominal computed tomographic scan showed multiples cystic lesions in the kidneys and liver, with a large hepatic cyst responsible for compression of the suprahepatic veins and the inferior vena cava resulting in chronic Budd-Chiari syndrome. The treatment was radiological drainage followed by percutaneous sclerosis of cysts to alleviation of the compression. Unfortunately, the patient died a few days after an intraperitoneal cystic rupture.
Establishment of primary intestinal epithelial cells and leukocytes from the three-spined stickleback, Gasterosteus aculeatus v1
Authors: not provided abdelmounaim_nouri
Published: November 2022

This protocol details the Establishment of primary intestinal epithelial cells and leukocytes from the three-spined stickleback, Gasterosteus aculeatus.
Light-Seq Cell Barcoding v1
Authors: Y. Kishi Jocelyn
Published: November 2022

We present Light-Seq, an approach for multiplexed spatial indexing of intact biological samples using light-directed DNA barcoding infixed cells and tissues followed by ex situ sequencing. Light-Seq combines spatially targeted, rapid photocrosslinking of DNA barcodes onto complementary DNAs in situ with a one-step DNA stitching reaction to create pooled, spatially indexed sequencing libraries. This light-directed barcoding enables in situ selection of multiple cell populations in intact fixed tissue samples for full-transcriptome sequencing based on location, morphology or protein stains, without cellular dissociation. Applying Light-Seq to mouse retinal sections, we recovered thousands of differentially enriched transcripts from three cellular layers and discovered biomarkers fora very rare neuronal subtype, dopaminergic amacrine cells, from only 4–8 individual cells per section. Light-Seq provides an accessible workflow to combine in situ imaging and protein staining with next generation sequencing of the same cells, leaving the sample intact for further analysis post-sequencing.
A BREEDING STUDY TO DEVELOP EARLY MATURING SOYBEAN CROSSES SUITABLE FOR DOUBLE CROPPING
Authors: YILDIRIM Aliye , İLKER Emre , EKREN Doç. Dr. Sıdıka , YAVAŞ İlkay , ISAYEVA Dünya , BAYRAKTAR Özer Hakan
Published: November 2022

The present research was undertaken to evaluate of soybean hybrids environmental interaction and adaptability on Mediterranean region conditions. Seven advanced (F7) soybean lines selected from the Kunitz x SS-201 and Kunitz x Bert cross populations based on earliness and yield characteristics in the preliminary trials and three soybean varieties (Bravo, Nova and Arisoy) were tested in the trial in four replications in 2017 and 2018 in accordance with the RCBD. The analysis of variance revealed significant variations for all characters. According to results, the yield of lines and varieties 2017 and 2018 varied from 2.87-4,47 t ha-1 and 2.61-3.90 t ha-1 respectively and KS-39 advanced soybean line had the highest grain yield in terms of two years average. The number of flowering days varied between 32.50 days and 36.75 days according to the two-year averages, and the KS-12 genotype was the earliest flowering genotype. The lines KS-10 (103.38) and KS-12 (103.50) came to the fore as the genotypes with the earliest maturation days. With this study, it has been concluded that promising genotypes can be obtained in regions dominated by the Mediterranean climate zone (especially the Aegean coastline), and soybean cultivation can be done in double crop agriculture within the cropping system.
Correlation between SPAD and chlorophylls a, b and total in leaves from Vaccinium corymbosum L. cv. Biloxi, Legacy and Victoria in the high tropics
Authors: Pinzón-Sandoval Elberth Hernando , Almanza-Merchán Pedro José , Cely-Reyes Germán Eduardo , Serrano-Cely Pablo Antonio , Ayala-Martínez Guillermo Alexander
Published: November 2022

Blueberries in the Ericaceae family are important, cultivable species for commercial and industrial purposes. Critical parameters for evaluating the nutritional and physiological status of plants include estimates of photosynthetic pigments such as chlorophylls; however, this is a destructive, expensive and time-consuming method that is not easily accessible for agricultural producers. For this reason, in recent years, several technological solutions have been made available, such as the SPAD-502 chlorophyll index meter, which has demonstrated efficiency in terms of rapid estimates of total chlorophyll content in the field. Therefore, the objective of this research was to evaluate the contents of chlorophylls a, b and total obtained with spectrophotometry and to determine the correlation with the non-destructive method (SPAD) in blueberry plant (Vaccinium corymbosum L.) cultivares Biloxi, Legacy and Victoria, in the vegetative phase under conditions of the municipality of Paipa-Boyaca (Colombia). The data obtained with the SPAD-502 ranged from 57.4 to 62.8 SPAD in the 'Victoria', 61.2 to 68.3 in the 'Biloxi', and 68.2 to 73.1 in the 'Legacy'. The content of chlorophylls a, b and total presented a positive and significant correlation with the SPAD index, with a correlation coefficient (r) greater than 0.91 and adjustment to simple linear regression models with a coefficient of determination (R2) greater than 0.90 in the three cultivars. This confirms the usefulness and importance of using SPAD for non-destructive estimation of chlorophyll content under field conditions.
System Engineering of the Organizational and Technical Systems' Digital Twins Using Artificial Intelligence Methods
Authors:   Ufa state aviation technical university, Ufa, 450008, Russian Federation, Orlova E. V.
Published: November 2022

The article considers the problem of digital twin design of organizational and technical systems. The theoretical and methodological basis of the research is the fundamental scientific works and applied works of Russian and foreign scientists in the field of digitalization and digital twins. Following methods are used in the research: system analysis, statistical analysis, operational research, artificial intelligence. A comprehensive analysis of approaches and methods for digital twin design of organizational and technical systems is carried out. It is shown that for complex organizational and technical systems operating under uncertainty, there is no comprehensive, universal technology (methodological approach) for organization the process of developing digital twins in order to accelerate their engineering. The technology for organizing a digital twin design, combining design stages, methods and models, and providing its system engineering is proposed. The decision support model is developed for diagnosing the technical state of an object (technical device), based on the methods of situational analysis and fuzzy logic, which provides the synthesis of effective solutions under various situations and combinations of heterogeneous factors characterizing the object and its external environment. The practical significance of the research is the developed decision support system, which is the basis for control system in solving problems related to monitoring the current state of technical devices (instruments, equipment) and developing adequate decisions to eliminate their disfunctions.
Rise Overrun: Condoization, Gentrification, and the Changing Political Economy of Renting in Toronto
Authors: Grisdale Sean , Walks Alan
Published: November 2022

Privately owned high-rise condominiums have been increasing as a proportion of all housing units built in the Greater Toronto Area for many decades. This has inspired a growing literature theorizing both “condoism” as an emergent planning-development regime and the implications of “condoization” and “condofication” for urban governance and everyday life in cities like Toronto. Building on this literature, this article assesses the implications of Toronto’s increasing reliance on (mainly vertical) condominium development for the socio-spatial transformation of the housing market, particularly for renters. Analyzing time-series data from Canada Mortgage and Housing Corporation and the Census of Canada to quantify the effects of the city’s condoization, we answer three key questions: How important is condominium development for understanding the restructuring of Toronto’s economy? How has condoization contributed to the ongoing gentrification of Toronto’s inner city? How is condoization restructuring Toronto’s rental market? Building on previous research categorizing and mapping the gentrification of Toronto’s inner city, we find that condoization is an increasingly defining element restructuring the city’s rental market, while this restructuring also plays a central role in the advancing gentrification of the city’s core.
The Photographer Photographed: A Conversation with Jean Mohr
Authors: Ross Reuben Connolly
Published: November 2022

The Swiss photographer Jean Mohr, who died in November 2018 at the age of 93, is well known for his long career documenting the plight of the displaced and dispossessed. Especially noteworthy are his collaborations with major intellectual figures, through which he experimented with the construction of visual narratives. His celebrated books with John Berger include *A Fortunate Man*, an intimate portrait of an English country doctor, and A Seventh Man, a meditation on migrant labour in 1970s Europe; with Edward Said, he published After the Last Sky, a reflection on Palestinian life through the fusion of text and photography. Partially based on a short interview conducted with Mohr in early 2018, this paper reflects on his life and work, taking the reader on a journey mediated by our conversation. In particular, I explore the development of his unique approach to photography and the experimental construction of visual narratives. In so doing, I argue that Mohr’s work offers social scientists, particularly those engaged in studying processes of migration or zones of conflict, ways of constructing more effective, more engaged, and more experiential accounts of complex social realities.
Aspect Based Opinion Mining & Sentiment Analysis
Authors: Londhe Alka , Rao P. V. R. D. Prasada
Published: November 2022

Opinion mining is a relatively new field that refers to the practice of collecting feedback in the form of online reviews and ratings left by users on various topics. Researchers are now able to monitor the states of consciousness of individuals in real-time because to this development. Just lately, a number of research papers for sentiment analysis were implemented, each of which was based on a unique categorization and ranking procedure. However, the amount of time necessary for the newline performing class has not decreased in any way. Sentiment Sensitivity newline word list SST was provided as a solution to the problem of function mismatch in the go-domain sentiment class across the source area and the target domain; however, achieving improved accuracy and identifying distributional similarities of words became less effective as time went on. Hidden Markov’s persistent development may be seen at the beginning. Cosine In order to achieve more effective and clean pre-processing, a method that is conceptually quite similar to HM-CPCS has been devised. The HM-CPCS methodology, which has recently been suggested, makes use of the POS tagger, a variant of which is based on the Hidden Markov algorithm. Evaluations are created using data from a wide variety of different domains. Similar to a newline, the tags that come before and after it compute the possibility of transitions and the existence of the term newline among the tags in order to increase capability. This is done in order to improve capability.