bluuebunny/crossref_metadata_2025 huggingface dataset:
A Decenary Update on the Deep Eutectic Solvents in Heterocyclic Scaffold
Synthesis-A Green Solvent Approach
Authors: Kamanna Kantharaju , Badiger Krishnappa B. , Kamath Aravind
Published: February 2023

Deep eutectic solvents (DESs) are a mixture of two or more chemicals (hydrogen bond donors
and acceptors) that are solid at room temperature, but combined at a unique molar ratio, presenting a
melting point recession and becoming liquid. These solvents emerged as an alternative to hazardous solvents
employed in various organic transformations and fulfilled the green chemistry concept. The convenience
of synthesis, recyclability, inexpensiveness, non-toxicity, high solvent capacity, high biodegradation,
low volatile organic character, and environmentally benign nature give DESs an edge over other
solvents. Due to the numerous benefits to present environmental concerns and the necessity to replace
hazardous solvents, the DESs solvent system is appealing to chemists in recent decades. The most important
role played by the DESs showed component interactions via covalent or ionic bonds, and is thus
considered a good candidate to replace ionic liquids or traditional solvents. The present review article
focuses mainly on recent highlights of DESs, preparation, properties and applications to various heterocyclic
molecule construction for the period 2012 to 2022.
Pengaruh permainan tradisional bakiak dan engklek terhadap perkembangan sosial emosional anak
Authors: Fitri Fitri , Karta I Wayan , Nurhasanah Nurhasanah
Published: February 2023

Perkembangan sosial emosional merupakan perkembangan yang penting dan muncul sepanjang perkembangan anak usia dini. Tujuan penelitian ini untuk menguji ada atau tidaknya pengaruh permainan tradisional bakiak terhadap anak kelompok B di RA Babussalam Seganteng Cakranegara, menguji ada atau tidaknya pengaruh permainan engklek terhadap anak kelompok B, menguji pengaruh secara bersama permainan tradisional bakiak dan engklek terhadap perkembangan sosial emosional anak kelompok B di RA Babussalam Seganteng Cakranegara. Penelitian ini menggunakan metode kuantitatif eksperimen pre-experimental design dengan desain one grup pretest-posttetst design. Sampel dalam peneleitian ini adalah anak kelompok B di RA Babussalam Seganteng Cakranegara, sejumlah 15 anak. Tehnik pengumpulan data berupa observasi dan dokumentasi. Tehnik analisis data menggunakan analisis regresi linier berganda. Hasil penelitian hipotesis pertama menunjukkan bahwa nilai thitung 4,145 ttabel 2,145 maka terdapat pengaruh positif permainan tradisional bakiak terhadap perkembangan sosial emosional anak kelompok B, kemudian hipotesis kedua nilai thitung 3,685 ttabel 2,145 maka terdapat pengaruh positif permainan tradisional engklek terhadap perkembangan sosial emosional anak kelompok B, selanjutnya hipotesis ketiga bahwa nilai fhitung 17,298 ftabel 3,68 artinya terdapat pengaruh positif permainan tradisional bakiak dan permainan engklek secara bersama-sama terhadap perkembangan sosial emsional anak kelompok B di RA Babussalam Seganteng Cakranegara.AbstractSocial-emotional development is an important development and occurs throughout early childhood development. The purpose of this study was to examine whether or not there was an influence of traditional bakiak games on group B children at RA Babussalam Seganteng Cakranegara, to test whether or not there was an effect of hopscotch games on group B children, to examine the joint effect of bakiak and hopscotch games on the social-emotional development of group B children. at RA Babussalam Seganteng Cakranegara. This study uses a quantitative experimental method Pre-experimental Design with one group pretest-posttest design. The sample in this study was group B children at RA Babussalam Seganteng Cakranegara, a total of 15 children. Data collection techniques in the form of observation and documentation. The data analysis technique uses multiple linear regression analysis. The results of the first hypothesis research show that the tcount is 4.145 ttable 2.145, so there is a positive influence of the traditional bakiak game on the social-emotional development of group B children. , then the third hypothesis is that the value of fcount is 17.298 ftable 3.68, meaning that there is a positive influence of traditional bakiak and hopscotch games together on the social-emotional development of group B children in RA Babussalam Seganteng Cakranegara.
Encouraging Safe Behaviour among Malaysian Outdoor Recreation Participants
Authors: Abdul Latif Rozita , Che Mat Hisyam , A Rahman Mohamad Wafi , Dimitrova Antoaneta
Published: February 2023

The focus of the management of outdoor activities is keeping participants safe. Developing safety management practices (SMPs) encourages participants' safe behaviour (SB) and prevents accidents. The study examined the relationship between SMPs and SB among outdoor participants. Two hundred and fifty outdoor participants were respondents. The Vinodkumar and Bhasi questionnaire was administered to the participants. The majority of respondents, 49.4% (n=126), participated in outdoor activities once or twice a week. Results showed a moderate relationship between SMPs and SB (r (255) = 0.697, p<0.001). The study recommends that outdoor activities management should implement policies to promote safety to prevent accidents.
Pahang's Heritage Food: Do consumption values play a role in the development of behavioral intentions?
Authors: Saad Mazni , Kamarizzaman Nur Assyiqin , Ishak Noriza , Pratt Thomas James
Published: February 2023

This study explores the state of tourists' perception of Pahang heritage food. Data were obtained from 164 tourists through social media applications. The survey outcomes were encouraging, which showed a positive and significant influence between food consumption values and domestic tourists' behavioral intentions to consume heritage foods. These findings will help Pahang's destination managers better understand how the promotion of heritage foods can be utilized to attract future domestic tourism. Marketers should increase familiarity with heritage foods, particularly among potential domestic tourists, as familiarity may increase emotional values.
Willingness for Change to New Norm for Traditional Food Business by SMEs Entrepreneurs
Authors: Mohd Noor Harifah , Foo Jurry , Md Ramli Adilah , Afrizal Teuku
Published: February 2023

Traditional food represents the cultural identity that becomes an income source for Small and Mid-size enterprises (SMEs) entrepreneurs in Sabah. The sudden presence of COVID-19 since March 2020 has impacted traditional food entrepreneurs. This research examines the readiness of entrepreneurs to innovate their businesses through a new norm. Factor Analysis is used to analyse 21 parameters of a new norm for the traditional food business. This study developed three dimensions: enhancing existing business, new norm business and improving business skills. Entrepreneurs need to prepare strategies to meet new business norms. Support from the government and agencies is required to enhance SME entrepreneurs' business capabilities.
Characteristic Features of Support for Making Managerial Decisions in the Management System of Logistics Flows of Transportation and Storage Complex
Authors: Averchenkov A. V. , Averchenkova E. E. , Kovalev V. V.
Published: February 2023

Purpose of research is to describe the process of making managerial decisions in terms of the management system of logistics flows based on the management theory principles and concepts.Methods. The formalization of the management system of logistics flows of transportation and storage complex is based on the management theory approaches and methods. The proposed management system model presupposes the formation of an influencing impact, the specification of the output coordinates of the object under control after working out control actions, and a description of the external environment. The visual model of the management system and its formalization in terms of the set-theoretic approach are presented. Management principles based on error and disturbance are described; the accounting of these principles makes it possible to adjust the managerial actions on the logistics flows of the transportation and storage complex to achieve the targeted benchmarks of a company. Making a managerial decision in logistics of transportation and storage complex is based on a process approach.Results. The proposed visual as well as set-theoretical model of the management system for logistics flows of transportation and storage complex is the basis for further formalization of the management problem, optimality criteria and corresponding constraints in similar logistics systems. The process of managerial decision-making in relation to logistics flows given in the article is considered as the basis for expanding the possibilities of applying automated decision support systems.Conclusion. The prospects for the further development of management processes based on the principles of automation are assessed as significant ones. The theoretical substantiation of these prospects is the formalization of the control system model based on the management theory approaches, which makes it possible to determine the areas of further work for expanding management theory use in such organizational systems as logistic ones as well as to specify the management task for them.
Simulation of Deformations of Pre-Stressed Steel Trusses in Emergency Situations
Authors: Serpik I. N. , Tarasova N. V.
Published: February 2023

Purpose of research is to make methodology and algorithm for finite element modeling in a single computational scheme of deformation of flat steel trusses, previously stressed using high-strength ropes, in accordance with the chronology of impacts on the object in the form of prestresses, normative loads and emergency destruction of one of the bearing elements.Methods. The solution of the problem is carried out in geometrically nonlinear staging using numerical integration based on Newmark approach with the construction of equilibrium equations of the finite element model of the structure in a deformed state at each integration step. Structural nonlinearity related to structural restructuring and consideration of ropes operation for tension only is described. The application of gravity forces of the carrier system, sequential introduction of tightening and their prestress, the application of payload and emergency impact in the form of instantaneous local destruction are traced. Before failure occurs, static loading condition is simulated using dynamic relaxation method. Methodology of accounting within numerical integration of emergency impact is formulated by application of dummy forces, values of which are calculated in excluded structural element before its destruction.Results. Performance of presented computational procedure is illustrated by the example of a flat steel truss calculation with a span (54 m), including two ropes. Object behavior is considered considering the break of one of the ropes subjected to preliminary stress. It was revealed that the investigated emergency does not lead to the destruction of the second rope and the occurrence of plastic deformations in the truss rods.Conclusion: Completed developments can be used to ensure the survivability of pre-stressed steel trusses under beyond design basis effects, leading to the destruction of individual structural elements.
Recursive Algorithm for Forming Structured Sets of Information Blocks to Increase the Speed of Their Source Determination Procedures
Authors: Tanygin M. O. , Alshaea H. Y. A. , Dobritsa V. P. , Dobroserdov O. G.
Published: February 2023

Purpose of research. In some classes of information systems, it is impossible to use well-known algorithms for the identification and the authentication the data blocks sources. The reason for this is the duration of the full data processing cycle. The article considers the original algorithm for determining sources for a group of data blocks. It allows you to detect errors faster than the usual iterative algorithm for forming tree structures of blocks by changing the order of base operations. The purpose of the work is to reduce the computational and resource costs for the receiver to perform identification the sources of blocks, each of them has a size not exceeding a few bytes.Methods. The identification method based on the forming a tree structure of incoming information blocks and subsequent analysis of tree branches. It allows selecting a chain of blocks formed by the target source. In the article the formal description of the algorithm is given. The results of the simulation of the procedures for determining the source are presented. In this case, the characteristics of the recursive algorithm were compared with those obtained for the known iterative one.Results. The relationships between the average number of typical hash comparison operations, the average number of tree structure branches, and the number of accepted blocks obtained as a result of simulation modeling. This made it possible to determine the conditions for applying the recursive and iterative algorithms.Conclusion. It is shown that the using of a recursive algorithm for forming a tree structure of frames can reduce the average number of base operations performed by the receiver by 5-10 % and reduce the memory cost for storing tree structure branches by up to 30%.
Choice of Kinematic Structure of Modular Robotic System Depending on the Type of Motion Surface
Authors: Saveliev А. I. , Blinov D. V. , Erashov А. А.
Published: February 2023

Purpose of research. The purpose of this study is to identify the advantages and disadvantages of various kinematic structures (formations) of self-reconfigurable modular robotic systems depending on the type of surface over which the system is mainly to be moved.Methods. Analysis of kinematic structures of modular robotic systems with respect to their displacement capabilities was carried out. Features of movement of these formations on different surfaces, as well as features of application of some formations are highlighted. A study of functionality of its own mobile autonomous reconfigurable system was carried out on the basis of described formations.Results. According to the results of the study, the main structures of modular robotic systems were identified, among which the most popular are formations that have a chain architecture: "snake," "manipulator"; "walking" structures: "quadropod," "spider," "centipede," as well as mobile structures "machine," "wheel" and "ball." Based on the conducted analysis, structures were developed for their own modular robotics system. Geometric features and kinematic limitations of its modules were considered in developing the structuresConclusion. The use of the analysis results will allow better adaptation of a modular self-reconfigurable robotic system to the surface on which this system moves. The selection of a particular formation of the modular system is also influenced by the required speed of movement over a given surface. Walking formations have the greatest adaptability to various types of surfaces, but they are also the most difficult from the point of view of control system developing.
Comparative Analysis of Typical and Energy-Efficient Solutions of a Low-Rise Residential Building Based on a Bim Model
Authors: Bredikhin V. V. , Kulakov K. Y. , Uchinina T. V. , Pyshnaya A. S.
Published: February 2023

Energy efficient solutions reduce the amount of resources consumed, which leads to a lower total cost of ownership of real estate. The use of the BIM model makes it possible to evaluate the key indicators of energy-efficient solutions: heat transfer coefficient, specific annual values of energy consumption, fuel consumption, and carbon dioxide emissions into the atmosphere.Purpose of research. Develop and determine the feasibility of introducing energy efficient solutions based on the use of a BIM model of a low-rise building.Methods. The methodology is based on the study of the introduction of modern building technologies and standards in the Penza region, as well as the analysis of positive solutions to similar situations in the Russian Federation. To achieve the goal, the following tasks were solved: a BIM model was developed and the energy efficiency of a typical residential building was assessed; options for improving the energy efficiency of a typical low-rise residential building were identified; an energy report was drawn up for standard and energy-efficient buildings and the expediency of introducing energy-efficient solutions into a standard project was substantiated.Results. When developing energy-efficient solutions, it is advisable to use modern digital technologies. The BIM model of a typical low-rise residential building makes it possible to identify thermal blocks, zones within each of them, as well as structural elements of the building through which the main heat losses occur and develop options for improving the energy efficiency of the building. Based on the thermal blocks and zones allocated in the building, energy-efficient solutions have been developed, thanks to which heat losses through window openings and the front door are reduced from 3.04 to 0.63 W/m2K and from 2.11-0.79 W/m2K, respectively. Heat losses due to changes in the design of enclosing structures: walls and floors above the first floor decreased from 0.28 to 0.25 W/m2K and from 0.18 to 0.15 W/m2K, respectively.Conclusions.The BIM model of a building makes it possible to effectively conduct a comparative analysis of standard and energy-efficient solutions for low-rise buildings, taking into account the features of the planning solution and regional climatic features.
Operation of a Light Emitter on Biogas
Authors: Ermakov N. O. , Chuikin S. V.
Published: February 2023

Рurpose of research. One of the ways to reduce the consumption of thermal energy for heating large-volume premises is a method based on the use of local systems, which include gas-radiant heating systems using light emitters. It is proposed to operate a light emitter on biogas. To determine the possibility of operation of a light emitter on biogas, it is necessary to calculate the optimal parameters of operation of a light emitter.Methods. The research was based on the scientific works of scientists on the theory of gorenje gas mixtures and the introduction of new design solutions of gas emitters. In the course of the study, methods of optimization and calculation of gas-burning equipment were used. In order to calculate the optimal operating parameters, it is required to conduct a study of the gorenje gorenje of biogas, and to obtain the dependence of the combustion temperature. It is necessary to make changes, confirmed by calculations, to the existing design and operating mode of the light emitter operating on natural gas for operation on biogas.Results. The features of biogas combustion are studied and the maximum gorenje gorenje temperature is determined. The possible operation of a light radiator on biogas, with a set of optimal parameters, is proved.Conclusion. The change in the design characteristics of the light emitter during operation on biogas is justified. The results obtained can be used in the pre-design development of a new design of a light emitter for biogas of various compositions.
Damping Cutters with Variable Rigidity
Authors: Novikov S. G. , Malykhin V. V. , Gaidash N. M.
Published: February 2023

Purpose of research. The most important task in the field of mechanical engineering is to increase production efficiency through the rational use of equipment, increase in labor productivity, and reduce the labor intensity of technological operations while ensuring the required quality. In manual production, only the working movements of the tool are mechanized. Installation, adjustment and replacement of the tool, as well as control over its condition, are carried out by the operator or the fitter. The solution to the problem of increasing the productivity of turning operations is possible only by automating auxiliary movements.One of several existing ways to reduce non-regrowth time is the automatic replacement of non-regrowth cutting inserts in turning tools. However, the known designs of such assembled cutters do not allow achieving the required quality of processing due to the ineffectiveness of damping vibrations arising during the cutting process. The machining accuracy during cutting largely depends on the design of the tool and the materials used in its manufacture. These materials in the construction of the tool dissipate vibration energy, thus reducing vibration and ensuring the required accuracy.The purpose and objectives of the development are to improve the quality of processing and tool life through design solutions that increase the rigidity of the cutters and significantly damping vibrations during turning.

Methods. Use of high damping material to reduce vibration.Results. Increasing the efficiency of damping vibrations of the cutter due to vibration isolation of its prefabricated parts from the holder with a material with high damping.Conclusion. The proposed damping cutter with automatic change of the cutting insert allows you to achieve a technical result to improve the quality of processing, tool life and increase time between insert changes.
Modeling the Automating Process of the Creation, Checking and Updating Texts of Contracts
Authors: Kotov A. A. , Ronzhin A. L.
Published: February 2023

Purpose of research. Is to increase the degree of automation of contractual relations legal support of the parties as in the case of publishing activities through the development of model-algorithmic control and software for the automated creation and updating of texts of publisher-author license agreements.

Methods. When analyzing the processes of automating legal activities in relation to the creation, development and updating texts of contracts, Russian and foreign technologies and software that allow automating the processes of contractual activities have been considered. Conceptual and set-theoretics models of the process of automated building texts of contracts have been proposed.

Results. An original classification of tasks and ways of automating the legal activities including a list of promising information technologies have been proposed. Conceptual and set-theoretics models of the process of automated building texts of contracts have been developed; they differ in the use of a set of public acts, information resources, and expert information available as sources of information to create the necessary document in the selected subject area based on the algorithm of data verification, generation, visualization, contract updating, which provide contract creation and updating in an automated mode. An algorithmic model for automated processing of contract parameters which differs in the distribution of tasks between experts (a lawyer, a programmer) and software tools at has been developed. The main stages of the document life cycle involve creating, updating, deleting a contract, which, based on the event model, checks for updates in public acts and automatically corrects the text values of the parameter of the contract. The proposed solutions have been tested in case of a license agreement between an author of the article and the publishing house issuing Informatics and Automation journal.

Conclusion. The development of model-algorithmic control and software for processing text information available from public acts, information resources provided by representatives of subject areas necessary for the automated generation, verification, and visualization of individual acts contributes to an increase in the degree of automation, reduces the time of preparation of legal documents that meet the requirements of existing public acts. Means of automating contractual activities should be built on the principle of openness, be dynamic, and also be externally controlled. The software services of the St. Petersburg Federal Research Center of the Russian Academy of Sciences for the automation of legal activities developed within the framework of this study are available at http://legaltech.viwo.ru/.
Advances in Quantum Properties of Graphene and Derivatives Applied to Functional Nanomaterials and Metamaterials
Authors: Bracamonte A. Guillermo
Published: February 2023

In the present work we describe the most important quantum properties of graphene and derivatives recently published. We discuss how these properties were incorporated into varied hybrid materials such as substrates for specific tuning of matter to track varied quantum signals. Their potential applications were analyzed from nanomaterial and nanotechnology. In particular graphene, its derivatives and other carbon-based allotropes were chosen due to their special chemical structure and properties from the nanoscale to larger lengths, according to specific applications. As expected, these carbon-based and related materials’ highly ordered and condensed electronic configuration showed particular electronic properties below the nanoscale. Thus, we discussed the generation of pseudo-electromagnetic fields and conduction bands. This particular property could also interact with different quantized energy levels and quantum properties, such as those focused on: i) Dirac electron interaction and conduction, ii) anomalous quantized hall effects, iii) magnetic effects, iv) excitons, v) polaron generations, d vi) Fermi and Landau levels. These different phenomena were discussed about the particular topological states of graphene by tuning their 3D chemical structures. Therefore, quantum phenomena and their possible modifications such as quantum interference, potential improvements and encrypted signal transduction were considered for applications.
Contexto de cadena café
Authors: Martínez Rodríguez Álvaro Andrés
Published: February 2023

En esta ficha de contexto se mencionan los aspectos importantes de la cadena de café enfocados a su marco productivo, regional, económico, comercio internacional, así como sus perspectivas y tendencias frente al mercado, dando a conocer su entorno de Ciencia y Tecnología e Innovación.
Contexto de cadena yuca
Authors: Zambrano Muñoz Adriana del Pilar
Published: February 2023

En esta ficha de contexto se mencionan los aspectos importantes de la cadena de yuca enfocados a su marco productivo, regional, económico, comercio internacional, así como sus perspectivas y tendencias frente al mercado, dando a conocer su entorno de Ciencia y Tecnología e Innovación.
Bancos de Germoplasma, colecciones de vida
Authors:   ‎‎Corporación colombiana de investigación agropecuaria, Mosquera (Colombia)
Published: February 2023

Los bancos de germoplasma son lugares físicos donde se mantienen colecciones biológicas colectadas en diferentes ambientes. El objetivo principal es asegurar que los especímenes sean debidamente catalogados y sobre todo conservados.
Chontaduro de Colombia para el mundo papá!
Authors:   ‎‎Corporación colombiana de investigación agropecuaria, Mosquera (Colombia)
Published: February 2023

Hemos oído una cantidad de mitos acerca de los atributos del chontaduro, algunos son eso, solo mitos y otros son verdad. En este capítulo el YouTuber del Agro nos cuenta algunos de ellos y qué beneficios trae para la salud humana.
Drones, tripulación lista para despegue
Authors:   ‎‎Corporación colombiana de investigación agropecuaria, Mosquera (Colombia)
Published: February 2023

En esta ocasión el YouTuber del Agro decidió dejar su papel de influenciador digital para convertirse en un piloto, si en piloto de aviones no tripulados. Los drones se han convertido en herramientas tecnológicas muy fuertes para la agricultura, hoy Nicolás les cuenta cómo se han venido implementado y su importancia en el sector.
Un campo muy play
Authors:   ‎‎Corporación colombiana de investigación agropecuaria, Mosquera (Colombia)
Published: February 2023

El YouTuber Del Agro regresa muy tecnológico, en este capítulo nos hablará de las herramientas TIC implementadas para beneficiar el campo colombiano. Aplicaciones que miden el estado del clima, que identifican plagas y que dan recomendaciones tecnológicas son solo algunas de las que nos trae este divertido personaje.
El #YoutuberDelAgro se puso "abeja" con el tema de la apicultura y a su manera particular nos cuenta
Authors:   ‎‎Corporación colombiana de investigación agropecuaria, Mosquera (Colombia)
Published: February 2023

El Youtuber del Agro nos enseña la importancia de las abejas a nivel mundial, la apicultura y la apiterapia. Así mismo desmiente algunos mitos sobre abejas y nos enseña la manera mas fácil de tratarlas.
Plagas del cultivo del plátano
Authors: Rodríguez Yzquierdo Gustavo , Miranda Salas Tatiana Camila , Posada Velásquez Luisa Fernanda
Published: February 2023

Este vídeo hace parte de una estrategia de transferencia de tecnología para fomentar la diversificación de la economía regional en el marco del convenio AGROSAVIA-Ecopetrol , contiene información sobre algunas plagas presentes en el cultivo del plátano, los daños que ocasionan y las maneras de controlarlas.
Enfermedades del cultivo del plátano
Authors: Rodríguez Yzquierdo Gustavo , Miranda Salas Tatiana Camila , Posada Velásquez Luisa Fernanda
Published: February 2023

Este vídeo hace parte de una estrategia de transferencia de tecnología para fomentar la diversificación de la economía regional en el marco del convenio AGROSAVIA-Ecopetrol, contiene información sobre algunas enfermedades del cultivo del plátano, así como algunas de sus causas, daños y maneras de enfrentarlas.
Las aguas tratadas asociadas a la extracción de petróleo y sistemas de producción pecuarias
Authors: Velásquez Penagos José Guillermo , Almansa Manrique Edgar Fernando , Bueno Guzmán Guillermo Alonso
Published: February 2023

En alianza con Ecopetrol, AGROSAVIA adelanto una investigación sobre el impacto del consumo de las aguas tratadas asociadas a la extracción del petróleo o aguas de producción, en la producción, reproducción y salud de grandes y pequeñas especies animales.
Principales enfermedades que afectan el cultivo de caña de azucar (Saccharum spp.) en regiones paneleras: tecnologías para el sector panelero
Authors: Vargas Berdugo Ángela María , Barona Rodríguez Ayda Fernanda , Deantonio Florido Leidy Yibeth , Barreto Triana Nancy del Carmen
Published: February 2023

La caña de azúcar para panela puede presentar daños por hongos, bacterias o virus. Los síntomas muestran desarrollo de la enfermedad la cual ocasiona desbalance y limitado crecimiento del cultivo.
Plagas del cultivo del maracuyá
Authors: Rodríguez Yzquierdo Gustavo , Miranda Salas Tatiana Camila
Published: February 2023

Este vídeo hace parte de la estrategia de transferencia de tecnología para fomentar la diversificación de la tecnología regional en el marco del convenio AGROSAVIA-Ecopetrol, contiene información sobre algunas plagas del cultivo de maracuyá, los daños que ocasionan y las maneras de controlarlas correctamente, así como de insectos benéficos.
Uso de agua de producción tratadas en la industria petrolera
Authors: Velásquez Penagos José Guillermo , Almansa Manrique Edgar Fernando , Bueno Guzmán Guillermo Alonso
Published: February 2023

Con el fin de fortalecer el sector agropecuario, Ecopetrol y AGROSAVIA entregan los resultados de la investigación del uso de aguas tratadas de la industria petrolera y se evidencia las diferentes alternativas de uso para estas aguas en sistemas agropecuarios del piedemonte llanero.
Postgraduate-Year-1 Residents’ Perceptions of Social Media and Virtual Applicant Recruitment: Cross-sectional Survey Study
Authors: Plack Daniel L , Abcejo Arnoley S , Kraus Molly B , Renew J Ross , Long Timothy R , Sharpe Emily E
Published: February 2023

Background

The dissemination of information about residency programs is a vital step in residency recruitment. Traditional methods of distributing information have been printed brochures, websites, in-person interviews, and increasingly, social media. Away rotations and in-person interviews were cancelled, and interviews were virtual for the first time during the COVID-19 pandemic.

Objective

The purpose of our study was to describe postgraduate-year-1 (PGY1) residents’ social media habits in regard to residency recruitment and their perceptions of the residency programs’ social media accounts in light of the transition to virtual interviews.

Methods

A web-based 33-question survey was developed to evaluate personal social media use, perceptions of social media use by residency programs, and perceptions of the residency program content. Surveys were sent in 2021 to PGY1 residents at Mayo Clinic in Arizona, Florida, and Minnesota who participated in the 2020-2021 interview cycle.

Results

Of the 31 program directors contacted, 22 (71%) provided permission for their residents to complete the survey. Of 219 residents who received the survey, 67 (30%) completed the survey. Most respondents applied to a single specialty, and greater than 61% (41/67) of respondents applied to more than 30 programs. The social media platforms used most regularly by the respondents were Instagram (42/67, 63%), Facebook (36/67, 54%), and Twitter (22/67, 33%). Respondents used the program website (66/67, 99%), residents (47/67, 70%), and social media (43/67, 64%) as the most frequent resources to research programs. The most commonly used social media platforms to research programs were Instagram (38/66, 58%), Twitter (22/66, 33%), and Doximity (20/66, 30%). The type of social media post ranked as most interesting by the respondents was “resident life outside of the hospital.” In addition, 68% (39/57) of the respondents agreed or strongly agreed that their perception of a program was positively influenced by the residency program’s social media account.

Conclusions

In this multispecialty survey of PGY1 residents participating in the 2020-2021 virtual interview season, respondents preferred Instagram to Twitter or Facebook for gathering information on prospective residency programs. In addition, the program website, current residents, and social media platforms were the top-ranked resources used by prospective applicants. Having an up-to-date website and robust social media presence, particularly on Instagram, may become increasingly important in the virtual interview environment.
Shortcomings in the Evaluation of Blood Glucose Forecasting (Preprint)
Authors: Lee Jung Min , Pop-Busui Rodica , Lee Joyce Mee Kyoung , Fleischer Jesper , Wiens Jenna
Published: February 2023

UNSTRUCTURED

Most artificial pancreas systems require a blood glucose (BG) forecasting model that captures the dynamics of the human metabolic system. Machine learning researchers train these models by optimizing for metrics such as root mean squared error (RMSE). However, we found that when combined with a standard controller, models that minimize RMSE do not necessarily yield a higher percent time-in-range (%TIR). We compared the predictive accuracy and control performance of two forecasters: a machine learning-based model that minimizes RMSE (LSTM) and a rule-based model (Loop). Despite achieving RMSE comparable to state-of-the-art (RMSE 15.24mg/dL at 30min), LSTM only achieved 24.35% (IQR 22.35-25.61) TIR. While Loop’s prediction accuracy was worse (RMSE 19.50mg/dL at 30min, p < 0.05), it achieved higher TIR: 34.20% (IQR 31.25-41.02). Thus, the standard approach to evaluating BG forecasters could lead to poor model selection with respect to improving closed-loop control.
Colorimetric Chemosensor for Sulfide Anion Detection Based on Symmetrical Nitrovanillin Azine
Authors: Lestari Diana , Wahyuningsih Tutik Dwi , Purwono Bambang
Published: February 2023

The nitrovanillin azine (NA) has been successfully synthesized and examined as a colorimetric chemosensor for sulfide anion detection. The NA was synthesized using two steps reaction. Vanillin was reacted with concentrated nitric acid to form 5-nitrovanillin (NV) then the NV was condensed with hydrazine hydrate to produce the NA. The NA was obtained and fully elucidated by FTIR, 1H-NMR, 13C-NMR, and GC-MS spectrometer. The NA activity for anionic chemosensor was then carried out on several anions such as F⁻, Cl⁻, Br⁻, I⁻, S2⁻, CN⁻, HCO3⁻, AcO⁻, H2PO4⁻, N3⁻, NO2⁻, SCN⁻, ClO3⁻, and NO3⁻. The chemosensor tests showed NA was only selective for S2− in DMF:HEPES buffer (9:1, v/v, 10 mM, pH = 7.4) giving color change from light yellow to dark green. The LOD value was 1.43 × 10−5 M and the interaction model of NA-S2− indicated deprotonation mode between the -OH group with sulfide anion in a ratio of 1:1. The NA chemosensor can be applied for qualitatively analysis of sulfide anion using filter paper strips and quantitatively analysis of sulfide anion in tap water.
Influence of Al and Cu Doping on the Structure, Morphology, and Optical Properties of ZnO Thin Film
Authors: Afifah Faras , Tjahjono Arif , Ridhova Aga , Maulida Pramitha Yuniar Diah , Noviyanto Alfian , Aryanto Didik
Published: February 2023

In this study, ZnO thin films doped with Al (AZO) and Cu (CZO) were fabricated on a glass substrate via sol-gel spin coating. The influence of 1 atomic % Al and Cu doping on the structure, morphology, as well as optical properties of ZnO thin film was then analyzed with X-ray diffraction (XRD), atomic force microscopy (AFM), and UV-Vis spectroscopy. XRD analysis revealed that all samples possessed hexagonal wurtzite crystal structures with 3 to 4 preferred orientations. Al and Cu doping caused a decrease in crystal size, while the lattice strain (e) and dislocation density (ρ) were increased. AFM indicated that Al and Cu doping reduced the surface roughness of the ZnO thin film. Optical measurement showed that all samples exhibited high transmittance (> 80%) in the visible light region. Transmittance was reduced after doping, while the band gaps for ZnO, AZO, and CZO thin films are 3.26, 3.28, and 3.23 eV. This study showed that an addition of 1 atomic % transition metal (Al and Cu) greatly influences the structure, morphology, and optical properties of ZnO thin film.
Adsorption of Fe(II) by Layered Double Hydroxide Composite with Carbon-Based Material (Biochar and Graphite): Reusability and Thermodynamic Properties
Authors: Palapa Neza Rahayu , Wijaya Alfan , Siregar Patimah Mega Syah Bahar Nur , Amri Amri , Ahmad Nur , Taher Tarmizi , Lesbani Aldes
Published: February 2023

Layered double hydroxide (LDH) of Ni/Al was synthesized by coprecipitation method at pH 10 followed by the formation of composite with carbon-based material i.e., biochar (B) and graphite (G) to form Ni/Al-B and Ni/Al-G. Materials were characterized by XRD powder, FTIR, BET surface area, thermal analyses, and SEM analysis. The regeneration process and adsorption evaluated the performance of materials toward iron(II) [Fe(II)] from an aqueous solution. The results showed that the surface area of Ni/Al-B (428.94 m2/g) was increased mainly up to twenty-nine-fold than Ni/Al LDH (15.11 m2/g), while Ni/Al-G (21.59 m2/g) had slightly increased than pristine LDH. Composite of Ni/Al-B had reusability properties for Fe(II) adsorption up to five cycles and showed higher structural stability. The adsorption capacity of Ni/Al-B was 104.167 mg/g and can be a potential adsorbent to remove Fe(II) from an aqueous solution.
Electronic Structures of Graphene/MoS2 Heterostructure: Effects of Stacking Orientation, Element Substitution, and Interlayer Distance
Authors: Hastuti Dian Putri , Nawa Kenji , Nakamura Kohji
Published: February 2023

Effects of stacking orientation, element substitution, and interlayer distance on electronic structures of graphene/MoS2 heterostructures were investigated using first-principles calculations. The results predicted that the stacking orientation does not take a crucial role in changing the electronic structures in contrast to element substitution, which converts the system from semiconductor to metallic. A bandgap opening originating in a Dirac band of graphene is found to be governed by the interface distance between graphene and MoS2 layers.
Photocatalytic Degradation of Metronidazole Using Zinc Oxide Nanoparticles Supported on Acha Waste
Authors: Ayanda Olushola Sunday , Adeleye Blessing Oluwatobi , Aremu Omolola Helen , Ojobola Folasade Busayo , Lawal Olayide Samuel , Amodu Olusola Solomon , Oketayo Oyedele Oyebamiji , Klink Michael John , Nelana Simphiwe Maurice
Published: February 2023

The presence of emerging pollutants like pharmaceutical compounds in the environment is currently an issue of concern. Pharmaceutical compounds often escape conventional treatment systems and are persistent in the receiving environment; thus, the advanced oxidation processes could complement existing treatment methods to completely remove pharmaceuticals from contaminated water bodies. This work investigated the removal of metronidazole by ultra-violet light catalyzed by zinc oxide nanoparticles supported on acha waste. The synthesized zinc oxide nanoparticles, acha waste, and zinc oxide nanoparticles/acha waste composite were characterized by electron microscopy (SEM and TEM), Fourier transforms infrared spectrometry (FTIR) and X-ray diffractometry (XRD). Experimental results revealed that the UV light combined with zinc oxide nanoparticles and/or acha waste was more effective for metronidazole removal in combination than UV alone. The degradation of the metronidazole by UV light only, UV/nano-ZnO, and UV/nano-ZnO/acha waste systems follow the pseudo-first-order kinetic model. The addition of a catalyst to the UV reactor enhanced the degradation of metronidazole (5 mg/L) from 41.0 up to 86.1%. The outcome of this research showed that UV light in the presence of nanometal oxides and composites is an efficient technique for the removal of pharmaceuticals from an aqueous solution.
T-grafting BODIPY-Based Photosensitizers: The Synthesis of 2,6-Diethylacrylic-8-(o-methoxyphenyl)BODIPY and Its DSSC Performance
Authors: Lerrick Reinner Ishaq , Bere Wastiana , Braga Meliana Da Silva , Supriyanto Agus , Essa Ali Hashem
Published: February 2023

A new T-grafting photosensitizer of Dye-Sensitized Solar Cell (DSSC) has been developed by aligning Donor-Acceptor (D-A) group in an axially chiral BODIPY. Synthesis of the dye was conducted over a linear approach involving one-pot, non-oxidative synthesis of 1,3,5,7-tetramethyl-8-(o-methoxyphenyl)BODIPY, bromination, and finally C2/C6 ethyl acrylate Pd-Heck coupling to produce 65% of 2-ethylacrylic-1,3,5,7-tetramethyl-8-(o-methoxyphenyl)BODIPY (BOD-8) and 35% of 2,6-diethylacrylic-1,3,5,7-tetramethyl-8-(o-methoxyphenyl)BODIPY (BOD-9), both characterized by the appearance of acrylic alkenes at 6.05, and 7.63 ppm for BOD-8, and the additional 5.43, 7.80 ppm doublet peaks for BOD-9. The resulting dye showed excellent photon harvesting-related photovoltaic properties and electronic injection and regeneration processes where the acrylic esters were found to be the Donor and the aryl was the Acceptor. Eventually, the dye produced a current at 0.5% efficiency, similar to the horizontal D-A DSSC photosensitizer design.
Synthesis of Powdered [Mn(bipy)3](CF3SO3)2·5.5H2O: The Physical Properties and Antibacterial Activity
Authors: Sugiyarto Kristian Handoyo , Marini Dwi Anggi , Sutrisno Hari , Purwaningsih Dyah , Kusumawardani Cahyorini
Published: February 2023

The synthesis of the complex containing manganese(II), bipyridine (bipy) as a ligand, and an anionic trifluoromethane sulfonate (triflate) is reported. The corresponding metal content, conductance, and DTG-TGA of the complex lead to the formula of [Mn(bipy)3](triflate)2·5.5H2O. The fully high-spin magnetic moment is observed, corresponding to five unpaired electrons in the metal ion. The electronic spectral bands suggest the three possible spin-forbidden transitions of the sextet to quartet states. The mode of vibrations of the IR spectrum supports the typical ring of bipy, and the triflate. The images of SEM-EDX indicate the presence of the corresponding elemental content and reflect the relatively high crystallinity, as it is evidenced in the profile of the corresponding powdered diffractogram. The refinement of powdered XRD following the Le Bail program suggests being structurally triclinic symmetry of P21/c. This complex shows inhibition of bacterial activity against S. aureus and E. coli.
Article 360 of Indian Constitution – An Analysis
Authors: Brar Dr. Sumeet Pal Singh
Published: February 2023

Abstract: The thought of emergency has passed into political hypothesis. The basic idea, to make specific emergency provisions in the Constitution, was to protect against unintended emergence of autocracy as a result of internal disorder, external attack or battle. In the Indian Constitution, there is a separate part present for the emergency provisions. Part XVIII, therefore, is a component of innovation in our Constitution. The provisions of Financial Emergency are enshrined under Article 360 of the Constitution. This provision provides a safeguard for the Union Government if any threat exists to the financial stability of India. If the President is satisfied that a situation has arisen whereby the financial stability or credit of India or of any part of the territory thereof is threatened, then he may declares a Financial Emergency. The 38th Amend 1975 states that satisfaction of President to declare a Financial Emergency is immune from Judicial Review but provision is subsequently deleted by 44th Amend which restored power of Judicial Review even over satisfaction of President. A financial emergency has never been declared. A situation for declaring it arose in 1990 to 1991 during Prime Minister Chandra Shekhar’s regime but was avoided by selling off the gold assets of India. The 1992 balance of payments crisis that soon followed, which took India to the verge of bankruptcy, was averted by restructuring and devaluing the rupee, though this situation constituted a classic reason for declaring a financial emergency. Article 360 empowers Union govt to take control over state govt on every financial matter deals by a state. The Financial Emergency has never been imposed in any part of country, neither has Article 360 been used till now.
Cancer Tumor Mutation Prediction
Authors: Verma Bhumica , Verma Ankit Kumar , Uphadhayay Aditya , Parashar Shivam , Saini Shobhit
Published: February 2023

Abstract: Every day new technologies are invented to overcome the problems faced by the people. Machine learning can be seen as a boon in the series of technologies inventions within the context of smart digital society. Before 2015, in medical departments, the diagnosis what is serious disease could take a two days or, maybe a week. After the advancements in machine learning the diagnosis time is minimized rapidly. Like the path AI machine learning algorithms helps diagnosis diagnostician in making quick and more correct diagnosis, as well as pinpointing people who may gain from state-of-the-art treatments or therapeutic, our model also could extend to such kind of self learning algorithms. The analysis of our proposed model shows that it is efficient and productive than existing techniques. We have achieved the efficiency of the model by developing certain methods that transforms a data from data frame do a highly correlated data frame. This helps random forest classifier to make a prediction faster while providing a much probable class as an output. Currently this model can assist the diagnosis process and reduces the search space by 90% of the total variance, this on average reduces the time by 1.5 days
Solution Suggester Tool for Error
Authors: Mohod Er. Ashish , Sahu Tushar , Shinde Aditi , Ganvir Srushti , Patil Janhavi
Published: February 2023

Abstract: Stack Overflow is a valuable resource for software development-related concerns. For a few years, most people have been utilizing stack overflow to discover answers to mistakes they have faced. Within a short period, stack overflow has been acquainted with the majority of users. While coding, we are all likely to encounter one or more various sorts of mistakes on a regular basis. Then stack overflow will enter the scene to provide solutions. And the everyday action in software development is to write code, execute it, and remove mistakes.