bluuebunny/crossref_metadata_2025 huggingface dataset:
School Nurses’ Comfort With Diabetes Management and Technology From 2012 to 2019
Authors: Gomber Apoorva , Wentzell Katherine , Higgins Laurie A. , Volkening Lisa K. , Laffel Lori M.
Published: March 2023

Objective

School nurses are integral to optimizing diabetes management for students with type 1 diabetes. The aim of this study was to describe the use of diabetes technology in schools over time and assess school nurses’ comfort level performing diabetes management tasks.

Study design

From 2012 to 2019, school nurses who attended a diabetes education program completed a survey about their experience and comfort level with diabetes management.

Results

A total of 1,796 school nurses completed the survey; 56% had at least 5 years of school nursing experience. Most (86%) had at least one student with type 1 diabetes. Among school nurses with at least one student with type 1 diabetes, 73% had at least one student using insulin pump therapy, and 48% had at least one student using continuous glucose monitoring (CGM). There was no change in pump use over time, but the percentage of nurses who had a student using CGM increased significantly from 24% in 2012 to 86% in 2019 (P <0.001). School nurses’ comfort level using pumps remained stable over time. Overall, 47% reported being mostly/very comfortable giving boluses using a pump, and 17% reported being mostly/very comfortable troubleshooting problems with a pump. However, there was a significant increase in school nurses reporting feeling mostly/very comfortable working with CGM devices, increasing from 9% in 2012 to 44% in 2019 (P <0.001).

Conclusion

School nurses are an important part of diabetes management for school-aged youth with type 1 diabetes. There is a need for additional diabetes education and support to build their confidence with diabetes management and technology, especially with further technological advancements in management.
MHD Nanofluid boundary layer flow over a stretching sheet with viscous, ohmic dissipation
Authors:   Department of Mathematics, College of Engineering and Technology, SRM Institute of Science and Technology, Nithya N. , Vennila B. ,   Department of Mathematics, College of Engineering and Technology, SRM Institute of Science and Technology
Published: March 2023

The objective of this research is to examine the steady incompressible two-dimensional hydromagnetic boundary layer flow of nanofluid passing through a stretched sheet in the influence of viscous and ohmic dissipations. The present problem is obtained with the help of an analytical technique called DTM-Pade Approximation. The mathematical modeling of the flow is considered in the form of the partial differential equation and is transformed into a differential equation through suitable similarity transformation. The force of fixed parameters like thermophoresis number Nt, Brownian motion number Nb, Prandtl number Pr, Lewis number Le, Magnetic field M, suction/injection S and Eckart number Ec are displayed with the aid of Figures. Our outcomes showed a greater trend in the velocity profile for the parameters of magnetics M, suction S, and nonlinear stretching parameter n. While the reverse trend is found against the temperature profile when the Prandtl number increases. Lewis number and other parameters have shown increasing behavior in the concentration profile.
Modeling the adaptive behavior of an agricultural pest population
Authors:   University of Bordeaux, IMB, UMR CNRS, 5251, Talence, France, Ainseba B. , Bouguima S. M. ,   Laboratoire: Systèmes Dynamiques et Applications, Faculty of Sciences, Department of Mathematics, University of Tlemcen, Algeria, Kada K. A. ,   Laboratoire: Systèmes Dynamiques et Applications, Faculty of Sciences, Department of Mathematics, University of Tlemcen, Algeria
Published: March 2023

In this work, we formulate a model describing the growth of a pest population with seasonal diapause at the larval stage. The model includes the insect resistance to chemical treatments and their adaptation against a hostile environment. It consists on the description of three classes: the immature stage that includes eggs, larvae and pupae, and two mature stages corresponding to the vulnerable adult stage and the insecticide resistant adult stage. The main result consists in an analytical approach for the existence of a nonnegative periodic solution. The proof uses comparison results and Kamke's Theorem for cooperative systems. As an important illustration, a threshold type result on the global dynamics of the pest population is given in terms of an index R. When R≤1, the trivial solution is globally asymptotically stable. When R>1, the positive periodic solution is globally asymptotically stable. Numerical simulations confirm the analytical results.
Mathematical modeling of the gaming disorder model with media coverage: optimal control approach
Authors:   Laboratory of Information Technology and Modeling, Department of Mathematics and Computer Science, Faculty of Sciences Ben M'Sick, Hassan II University of Casablanca, Morocco, Kada D. , Kouidere A. ,   Laboratory of Analysis, Modeling, and Simulation (LAMS), Department of Mathematics and Computer Science, Faculty of Sciences Ben M'Sick, Hassan II University of Casablanca, Morocco, Balatif O. ,   Laboratory of Dynamical Systems, Mathematical Engineering Team (INMA), Department of Mathematics, Faculty of Sciences El Jadida, Chouaib Doukkali University, El Jadida, Morocco, Rachik M. ,   Laboratory of Analysis, Modeling and Simulation, Casablanca, Morocco
Published: March 2023

In this article, we propose a PEARM mathematical model to depict the dynamic of a population that reacts in the spread of the gaming disorder with media coverage. The basic reproduction number and existence of free equilibrium point and endimec equilibrium point are obtained with same fundamental properties of the model including existence and positivity as well as boundedness of equilibria are investigated. By using Routh–Hurwitz criteria, the local stability of free equilibrium point and endimec equilibrium point are obtained. Also, we propose an optimal strategy to implement the optimal campaigns through directing children and adolescents to educational and entertaining alternative means, and creating centers to restore the rehabilitation of addicts to electronic games. The existence of the optimal control are obtained by Pontryagain's maximum principle. Finally, some numerical simulations are also performed to illustrate the theoretical analysis of our results, using Matlab software. Our results show that media coverage is an effective measure to quit electronic gaming disorder.
Supplementation of Sambiloto (Andrographis paniculata) Leaf Flour through Broiler Drinking Water against Antibody Titers of Newcastle Disease, Avian Influenza, and Infectious Bursal Disease
Authors: Widowati Mia , Hardiyanti Cici , Nisak Rohmatin , Sirat Muhammad Mirandy Pratama , Ermawati Ratna
Published: March 2023

The aims of this study were 1) to determine the effect of Sambiloto(Andrographis paniculata)leaf flour supplementation to increase the antibody titer for Newcastle Disease, Avian Influenza, Infectious Bursal Disease; and 2) to determine the best dose of Sambiloto leaf flour supplementation to increase the three antibody titers. The research was carried out in the broiler cage unit of the Integrated Field Laboratory, Faculty of Agriculture, University of Lampung using a completely randomized design experiment with 5 treatments 5 replications and each replication 5 broilers Cobb CP 707 strain, a total of 125 broilers. All broilers were treated with ND, AI, IBD vaccination. Five treatments with different doses, namely drinking water without supplementation with Sambiloto leaf flour (P0); drinking water with Sambiloto leaf flour 3 mg/kg BW (P1); 6 mg/kg BW (P2); 12 mg/kg BW (P3); 24 mg/kg BW (P4). Broiler blood serum aged 26 days was obtained from the brachial vein using a 3-mL disposable syringe. Testing for ND and AI antibody titers with HI test and IBD antibody titer with indirect ELISA test at Vaksindo Agri Lab Laboratory. Data analysis with one-way analysis of variance with Tukey's further test using SPSS 24 software. The results showed that the supplementation of Sambiloto leaf flour in broiler drinking water had no significant effect (P>0.05) on ND and AI antibody titers, while on antibody titers. IBD had a significant effect (P≤0.05). The conclusions of this study were 1) the supplementation of Sambiloto leaf flour in broiler drinking water was able to increase the Infectious Bursal Disease antibody titer; and 2) the best dose of Sambiloto leaf flour supplementation in broiler drinking water is 12 mg/kg broiler body weight.
The Role of Trust in Mediation of Perceived Risk Towards Decisions to Use E-Wallet in Muhammadiyah University Students Ponorogo
Authors: Putri Defa Oktaviana , Wijayanto Heri , Setiawan Fery , Kristiyana Naning
Published: March 2023

This study aims to determine the role of trust in mediating Perceived Risk in the Decision to Use E-Wallet in Ponorogo Muhammadiyah University Students. The method used in this study is a quantitative method. Data from this study were obtained by distributing questionnaires and analyzed using the software. The population in this study were students using E-Wallet at the Muhammadiyah University of Ponorogo. The sample in this study was purposive sampling using 100 respondents. The results of this study indicate that: (1) There is an influence between Perceived Risk and Student Trust in E-Wallet Users at Muhammadiyah University of Ponorogo, (2) There is no influence between Perceived Risk and Decisions to Use E-Wallet on Students at Muhammadiyah University Ponorogo, (3 ) There is an influence between Trust and Decisions to Use E-Wallet on Students at Muhammadiyah University of Ponorogo (4) There is an influence between Perceived Risk and Decisions on Using E-Wallet on Students at Muhammadiyah University of Ponorogo through Trust as an intervening variable.
Penerapan Good Corporate Governnace dalam Optimalisasi Tata Kelola Pelayanan Perum Damri Cabang Surabaya
Authors: Amrulloh Muhammad Chasan , Tukiman Tukiman
Published: March 2023

The purpose of this study is to describe the application of good corporate governance in optimizing service governance in the perum damri branch of the City of Surabaya. This research method uses a descriptive type of qualitative research with data collection techniques carried out through observation techniques, interviews, documentation, and previous research. The results showed that the Perum damri Branch of Surabaya City has not fully applied the principles of good corporate governance as a whole from the 5 principles of achieving goals, there is still 1 principle that is well implemented, namely the principle of independency. Transparency has not been carried out due to the absence of operational information services, accountability has not been fully implemented, there is still no guarantee of employee competence and the company governance system has not run optimally, responsibility has not been fully relaxed due to the absence of social impact programs for the community in the company environment,  fairness has not been fully implemented because the community complaint box facility is still not available and there are still many fleets for rejuvenation and fleets are carried out for people with disabilities.
Evaluasi Pelaksanaan Program Penyaluran Pupuk Bersubsidi bagi Petani di Kecamatan Sungai Tarab
Authors: Defita Indah , Adnan M. Fachri
Published: March 2023

This motivation of research was the issues of distributing subsidized fertilizers in Sungai Tarab District, namely the price of subsidized fertilizers is higher than the HET, subsidized fertilizers are not sufficient to meet the farmers needs and delays in the distribution of subsidized fertilizers. This research was conducted with the aim of conducting an implementation analysis and evaluation of the implementation of the subsidized fertilizer distribution program for farmers in Sungai Tarab District.The research method was descriptive qualitative and determining research informants using purposive sampling. The research location was conducted in Sungai Tarab District. The techniques for data collection were conducted through techniques by interview and documentation studies. Validity test of the data utilizing the source triangulation technique by cross-referencing data gathered from several sources. The collected data is then transcribed, re-read and then conclusions drawn. The results of the study show that the implementation of the subsidized fertilizer distribution program for farmers in Sungai Tarab Subdistrict has four factors which include communication, resources, attitude of implementers and bureaucratic structure.
Peran Satuan Polisi Pamong Praja dalam Penertiban Pengemis di Kota Padang
Authors: Oktafiola Revi , Magriasti Lince
Published: March 2023

This research purpose to reveal the role of the Civil Service Police Unit in controlling beggars. This study uses quasi-qualitative methods and determines research informants using purposive sampling. This research uses techniques by source triangulation and techniques by data collection using observation, interviews and documentation. While the techniques for data analysis used by researchers are data collection, data reduction, display and verification and confirmation of conclusions. The research results shown that the Civil Service Police Unit in controlling beggars in the city of Padang has carried out its duties as a regulator, dynamist, facilitator and catalyst well. However, in the implementation of controlling beggars there are internal and external constraints. To overcome these obstacles with the entire community and the government in dealing with beggars in the city of Padang
Peningkatan Upaya Adaptasi dan Mitigasi dalam Program Kampung Iklim di Nagari Paru Sijunjung
Authors: Yona Niko Putri  , Magriasti Lince
Published: March 2023

This study aims to determine the implementation of the Climate Village Program in Nagari Paru. The Climate Village Program aims to overcome environmental problems and encourage communities to improve their adaptability and mitigation of climate change. This research uses qualitative   research with  descriptive method. There are 4 factors that influence the success or failure of policy implementation, namely (1) communication, (2) resources, (3) disposition and (4) bureaucratic structure. The results showed that the    Implementation of the Climate Village Excellence Program, namely: Adaptation, namely: a. Drought control (rainwater harvesting, water infiltration, spring protection) b. Improved food security. c. climate-related disease control. Mitigation, namely a. Waste and solid waste management. b. Adding vegetation cover c. Doing agricultural cultivation.
Pengaruh Pendidikan dan Latihan Promosi serta Pemindahan Pegawai terhadap Prestasi Kerja pada Kantor Bapedda Litbang Kabupaten Kerinci
Authors: Alfero M Rexsi , Lanin Dasman
Published: March 2023

This have a purpose to see the influence of education and training, promotion and transfer of staff By Bapedda R&D Kerinci Regency. For this type of research, namely Kuantitative. While The sampling technique used is total sampling. As for to population numbers employees who are in Bapedda R&D Kerinci Regency which amounts to 37 people. The results showed that (1) There is pengaruh education and practice towards work performance on Bapedda R&D of Kerinci Regency, bahwa found significance value that is 0,000 < 0.05. (2) There is pengaruh promotion towards work performance on Bapedda R&D of Kerinci Regency, that found significance value that is 0,000 < 0.05. (3) There is pengaruh employee transfers towards work performance on Bapedda R&D of Kerinci Regency that found significance value that is 0,000 < 0.05. (4) There is an influence education and practice, promotion and employee transfers towards work achievements in Bapedda R&D, Kerinci Regency found significance value that is 0.000 < 0.05.
Pengaruh Kualitas Pelayanan Aplikasi M-Paspor terhadap Kepuasan Pengguna Jasa Keimigrasian pada Kantor Imigrasi Kelas II Non TPI Agam
Authors: Deliano Akabar Ghifa , Frinaldi Aldri
Published: March 2023

This research is included in the category of quantitative research because this study seeks to test hypotheses by utilizing samples taken from the community. This research was conducted at the Immigration Office Class II Non TPI Agam. In this study, the sampling method used is the area sampling method because the work area has a wide scope. A total of 182 participants in this study were sampled. At the Class II Immigration Office of Non TPI Agam, the results showed that the variable quality of e-government services had a positive or significant effect on the service user satisfaction variable. This is by taking into account the significance value of 0.000 <0.05 for the variable quality of e-government services on the service user satisfaction scale. In the Class II Immigration Office of Non TPI Agam, the magnitude of the influence of the variable quality of e-government services on the service user satisfaction variable is 0.292 or equivalent to 29.2 percent. The amount of 29.2 percent is calculated using the Adjusted R value.
INFLUENCE OF HEALTH CARE TECHNOLOGIES ON THE INDICES OF ACTIVE ATTENTION AND INFORMATION MASTERING AMONG SCHOOLCHILDREN
Authors: Khodzinska Yu.Yu. , Nechitaylo Yu.M.
Published: March 2023

Childhood and adolescence are important periods for developing healthy lifestyle habits.A sufficient level of physical activity has a positive effect on neurocognitive processes and ensuresthe psychological well-being of school-aged children. In its turn, attention and concentrationare key factors of the academic success, adaptation and everyday life of young peoplе.Objective – to study the impact of school health care programs on the peculiarities oflearning and processing of information in schoolchildren.Materials and methods. The work analyzed the results of a comprehensive examination of79 schoolchildren aged 11-12 years, some of them (32 persons) were involved in a specialhealth care school program. The research included an examination by pediatrician andophthalmologist, measurement of functional indices of the cardiorespiratory system,assessment of the speed of learning and processing of the text information by proofreading.Results. The result of the students’ participation in the school- based health promotioninterventions for one year was the improvement of the cardiorespiratory system indices.The state of active attention during information processing – the reading speed of thetest task on attention concentration was higher in children of the experimental group(111.1±4.4 words/min.), compared to the indicator of the control group (96.9±2.4 words/min) (p<0.05). The accuracy of performing special tests, the level of attention switching,the ability to switch to new tasks quickly were better in the experimental group.Conclusions. The school- based health promotion interventions with increased physicalactivity, implemented in the educational process throughout the year, contributes to theimprovement of both individual cardiorespiratory indices and intellectual functions forlearning and processing of the text information.
PECULIARITIES OF TEACHING PATHOMORPHOLOGY AND SECTIONAL COURSE TO FOREIGN STUDENTS IN TERMS OF DISTANCE LEARNING
Authors: Garvasiuk O.V. , Namestiuk S.V.
Published: March 2023

The technology of visualization of educational information is a system that includes a setof educational knowledge; visual ways of their presentation; visual and technical meansof information transmission; psychological methods of using and developing visualthinking in the learning process. The visualization technology displays key elements ofthe educational material content. Scribing methodologies (English «scribe» in the senseof «drive a pen»), the use of WebQuests when working with macro drugs in preparationfor the final module control № 2 in «Pathomorphology» and the use of mental maps haveproven themselves in terms of distance learning. The article evaluates questions about thepeculiarities of teaching the subject «Pathomorphology» and sectional course to foreignstudents in terms of distance learning and in the context of proper preparation for theUnified State Qualifying Exam Step-1, discusses effective practical training in general.The aim – to analyze the peculiarities of teaching the subject «Pathomorphology» andthe sectional course to foreign students in terms of distance learning and to determinefurther prospects.Conclusions. The use of modern teaching technologies can help to improve the processof learning material from disciplines, to increase the efficiency and quality of modernstudent learning. Skillfully used computer technology should help to develop a student’screativity, develop clinical thinking, and promote better memorization.
ASSESSMENT OF STUDENTS’ KNOWLEDGE DURING DISTANCE LEARNING USING THE GOOGLE FORMS APPLICATION
Authors: Khlunovska L.Yu.
Published: March 2023

The objective of the article– to analyze the effectiveness of assessing the 4th year students’knowledge during distance learning using the Google Forms application.Material and methods. Foreign students of Bukovinian State Medical University ofthe 4th year of education by «Medicine» specialty study «Pediatrics» discipline whichincludes 12 topics. Here is an example of an option for evaluating students’ knowledgeacquired during a practical session on topic № 9 «Functional and organic diseases of thegastrointestinal tract in children». For the purpose of assessment, students were askedto solve the Google Form. During the use of this form (2020-2022 years of education),257 responses were received from students of the 4th year by «Medicine» specialty of theMedical Faculty № 3. The possibility of using Google Forms for objective assessment ofstudents’ knowledge during distance learning was analyzed.Results. Distance learning is a necessity in the process of acquiring knowledge in the modernworld; it leads to the growth of independence and self-development of a young person; itcontributes to the growth of competitiveness in the chosen specialty; as a form of educationof the future has already become an urgent necessity of the modern academic process.The Google Forms application is one of the alternative and powerful means of digitaltechnologies for forming a system of tasks for the current control of students’ educationalactivities. The use of Google Forms provides new opportunities for creating dynamicand relevant applications based on information and communication technologies, thatcan be used in distance learning. The use of forms is relevant when organizing students’independent educational activities, as a monitoring and management system.Conclusions. Distance education has a positive influence on students: increases theircreative and intellectual potential, stimulates their self-organization, expands theirknowledge in use of modern information and digital technologies, stimulates the abilityto make responsible decisions independently. Google Forms are easy to use and create,provide an individual approach to surveying students, allow to assess knowledge andprovide an objective assessment under the conditions of distance learning.
Огляд поширення та аналіз зоогеографічного складу фауни прісноводних черевоногих молюсків Закарпатської області
Authors: Фурик Юрій
Published: March 2023

Дана робота продовжує серію публікацій присвячених вивченню фаунипрісноводних черевоногих краю та її особливостей. Вона представляє аналітичний огляд, доповнений власнимиданими, складу фауни прісноводних черевоногих молюсків Закарпатської області, а також представляє аналізїї зоогеографічного складу. Перелік складу фауни включає в себе 37 таксонів видового рівня та один таксонродового, які були зареєстровані на території дослідження. У зоогеографічному відношенні фаунапрісноводних черевоногих краю являється змішаною за своїм складом. Тут переважають види палеарктичногокомплексу. Ендемічних видів на території Закарпатської області не виявлено. Натомість є один субендемік(Terrestribythinella baidashnikovi Sitnikova, Starobogatov et Anistratenko, 1992), який нещодавно був знайдений і натериторії Івано-Франківської області.
Loose Monetary Policy and Financial Instability
Authors:   University of Bonn, Grimm Maximilian , Jordà Òscar ,   Federal Reserve Bank of San Francisco,   University of California, Davis,   CEPR, Schularick Moritz ,   Sciences Po Paris,   University of Bonn,   CEPR, Taylor Alan M. ,   Columbia University,   University of California, Davis,   NBER,   CEPR
Published: March 2023

Do periods of persistently loose monetary policy increase financial fragility and the likelihood of a financial crisis? This is a central question for policymakers, yet the literature does not provide systematic empirical evidence about this link at the aggregate level. In this paper we fill this gap by analyzing long run historical data. We find that when the stance of monetary policy is accommodative over an extended period, the likelihood of financial turmoil down the road increases considerably. We investigate the causal pathways that lead to this result and argue that credit creation and asset price overheating are important intermediating channels.
Buscando qualidade dos padrões
Authors: Rocha Camila Mariana Gonçalves Vieira , Shimbo Lucia
Published: March 2023

A produção de habitação em escala ocorrida recentemente no Brasil foi marcada pela padronização de projetos que, na maioria das vezes, não consideraram os espaços livres dos empreendimentos, tampouco a integração da habitação com a cidade. Considerando a importância dos espaços livres no cotidiano da população e os padrões que orientam a qualidade da habitação, procurou-se analisar o projeto em uma escala ainda pouco investigada na produção habitacional: entre o espaço privado da unidade habitacional e o espaço público das cidades. Para tanto, foram selecionados três empreendimentoshabitacionais do Programa Minha Casa, Minha Vida representando cada uma das principais modalidades do programa (Entidades, Faixa 1 e Faixa 2), contratados na Fase 1 do Programa e localizados no estado de São Paulo (Guarulhos, Sertãozinho e São Carlos). A partir de uma pesquisa documental, foram analisadas as exigências presentes na legislação urbana local e nas normativas do Programa Minha Casa Minha Vida a fim de se compreender as condicionantes que nortearam o partido projetual dos espaços livres. Seguindo a abordagem da pesquisa de campo e a análise métrica e gráfica de projetos, foramidentificadas as principais características dos espaços livres dos empreendimentos analisados. Como resultados, são apontados os principais fatores que determinam a qualidade dos projetos dos espaços livres, bem como as diferenças ali presentes, considerando-se os agentes responsáveis em cada uma das modalidades (empresas construtoras nas Faixas 1 e 2 e assessoria técnica no Entidades). Buscou-se, assim, colaborar para a discussão sobre a importância dos espaços livres e coletivos inseridos no processo de padronização da habitação.
Surfactant-coated Seed Emergence and Establishment Under Deficit Irrigation in Hydrophilic and Hydrophobic Soils
Authors: McMillan Mica , Daroub Samira , Moore Kimberly , Erickson John , Kostka Stanley , Fidanza Michael
Published: March 2023

Soil water repellency inhibits seed germination and emergence, whereas soil surfactants improve the wettability of water-repellent or hydrophobic soils. An improvement in seed germination and emergence can occur when a soil surfactant is applied directly to the seed and/or to the water repellent soil at sowing. Therefore, a coating process was developed to utilize seed as a soil surfactant carrier. Greenhouse experiments were conducted to evaluate establishment of perennial ryegrass (Lolium perenne L.) seed coated with a soil surfactant (SCS = surfactant- coated seed), as compared to uncoated seed (CHK). Both SCS and CHK were sown in two hydrophilic substrates (100% sand [WSAND], 90:10% v/v sand:peat [WSP], and in two severely hydrophobic sands (100% hydrophobic stearic acid-treated sand [HSS], and hydrophobic 90:10% v/v sand:peat [HSP]). Due to the weight of the coating, SCS was sown at half the amount as compared to CHK; however, final turfgrass establishment in all rootzones with SCS was similar or better than CHK. In WSAND, WSP, and HSP, the volumetric water content was consistently higher in rootzones of SCS treatments versus CHK. SCS represents an opportunity to improve stand establishment and rootzone soil-water dynamics in challenging environmental conditions such as limited precipitation.

Species used in this study: Perennial ryegrass, Lolium perenne L.
Greater Appeal of Native Plants for Environmentally Conscious Consumers
Authors: Rihn Alicia , Behe Bridget K. , Barton Susan , Torres Ariana
Published: March 2023

Native plants are increasingly of interest to growers, wholesalers, and retailers as they seek to expand sales in this important plant category. A recent online survey of 2,066 Americans showed that while many consumers were interested in, and had made a purchase of, a native plant in the past 12 months, more than half believed they were either slightly or not at all knowledgeable about native plants. People who use more environmentally conscious gardening behaviors (e.g., composting, recycling containers, rain barrels, organic practices, pollinator friendly plants, plants requiring less irrigation) are more likely to view native plants as important in their gardens and landscapes. Three segments based on perceived importance of native plants were compared and marketing implications are discussed.
Estudio del flujo de calor generado alrededor de dispositivos semiconductores: experimentación y simulación numérica
Authors:   , Morales Larraga Alan
Published: March 2023

En este trabajo de investigación se utilizó un sistema óptico Schlieren para visualizar el fenómeno de transferencia de calor por convección en un sistema en el cual el gradiente de temperatura se encuentra entre los 273.15 K y la temperatura de calentamiento del aire alrededor de una punta caliente (356.45 K); esta aplicación resulta ser novedosa en comparación con las aplicaciones que comúnmente se le da a esta técnica, en las que se observan procesos de combustión de amas. Con este estudio se corrobora que la técnica de Schlieren resulta idónea para observar fenómenos donde el gradiente de temperatura es pequeño y donde se tiene un flujo de calor debido a la transferencia de calor por convección en áreas reducidas, por lo cual es recomendable en la medición de la temperatura y flujo de calor en dispositivos semiconductores. A partir de la información obtenida experimentalmente se modeló numéricamente el fenómeno de transferencia de calor por convección. En esta etapa de simulación, se aplicó la dinámica de fluidos computacional (CFD por sus siglas en inglés) con el método de volumen finito. Las simulaciones numéricas obtenidos fueron comparadas y validadas con los resultados experimentales. Los sistemas utilizados para la visualización de flujo de calor estaban conformados por 1) la superficie de enfriamiento de una celda Peltier con los alrededores y 2) esta misma superficie de enfriamiento y la punta caliente de un cautín. Este segundo sistema se utilizó para obtener una variación no homogénea en el flujo de calor. Los elementos del sistema óptico experimental son una fuente de luz LED blanca, un relevador reflectivo óptico tipo Z, una navaja, un sistema de adquisición de imágenes conformado por una cámara RGB CMOS (con tres capas de detección: roja, verde y azul) y componentes optomecánicas. Se diseño un programa para el análisis de los videos obtenidos con el fenómeno de flujo de convección. Para obtener los gradientes de temperatura del fenómeno bajo estudio y su evolución temporal se realizó la integración numérica y el desenvolvimiento de fase. Después, se analizó cada capa de detección, procesando los datos que entregan mayor información. Es importante notar que la capa roja de la cámara presenta un mejor contraste en la visualización del fenómeno, sin embargo, se ve más afectada por la difracción de luz indeseable. Por consiguiente, la capa verde de la cámara, resulta óptima para analizar el fenómeno.
Electrodepósito de aluminio sobre carbón vítreo utilizando el disolvente eutéctico profundo ethaline (ChCl:EG)
Authors:   , González Nava Víctor Julián
Published: March 2023

En el presente trabajo de investigación, se realizó la electrodeposición del aluminio sobre carbón vítreo en condiciones sin y con convección forzada a las temperaturas de 25, 50, 60 y 70 °C, utilizando el DES formado por ChCl:EG (cloruro de colina:etilenglicol) y AlCl3, ChCl:EG también es conocido como ethaline [31]. La característica fundamental de ethaline es su forma líquida a temperatura ambiente, lo que permitió realizar la deposición de Al sobre carbón vítreo, mostrando resultados favorables a medida que se aumentó la temperatura. La disposición de Al fue estudiada mediante las técnicas electroquímicas de voltamperometría cíclica y cronoamperometría, las cuales son descritas en la parte de anexos. A partir de la voltamperometría cíclica fue posible observar las zonas de reducción (proceso catódico) y oxidación (proceso anódico) del sistema CV/ 0.1 mol/L Al(III) (ethaline) a las diferentes temperaturas de trabajo. Además, con el estudio cronoamperométrico en el mismo sistema, aplicando formalismos teóricos [32-39], el sistema fue caracterizado bajo condiciones sin y con convección forzada, lo que permitió determinar parámetros cinéticos tales como: frecuencia de nucleación (A), densidad numérica de sitios activos (N0), coeficiente de difusión (D) y espesor de la capa límite de difusión (δ), esto último considerando condiciones de convección forzada [40-42].
Obtención de metanol a partir de la oxidación directa de metano mediante zeolitas naturales y sintéticas intercambiadas con Cu y Fe
Authors:   , García Reyes Marco Antonio
Published: March 2023

The current technology for the conversion of methane to methanol requires a high supply of energy for the production of synthesis gas and from it obtain methanol, in addition this process is characterized by having a low selectivity, in general, which requires alternative industrial processes. The limiting factor to achieve high selectivity is the high stability of the methane C-H bond. High temperature reaction systems are needed to break the C-H bond, and favor gas phase radical reactions and total methane oxidation. The conversion of natural gas (methane) into liquid chemicals of added value is one of the considerations to contribute to the supply of fuels and chemical synthesis raw materials due to the inevitable decrease in oil supply. This suggests developing selective catalytic processes for the activation of methane at low temperatures, while avoiding over-oxidation of the methane formed, and unfortunately transformed into formaldehyde or acetic acid. This research has shown that natural and synthetic mordenite zeolites exchanged with copper and iron from their form as Brönsted acid convert methane to methanol at 100, 200 and 300 °C; and the amounts of methanol were 1.4 μmol CH₃OH / g catalyst (the lowest) and 14.3 μmol CH₃OH / g catalyst (the highest). Natural and synthetic clinoptilolite and chabazite zeolites were also studied, which were exchanged with copper and iron in both liquid and solid phases. All the zeolites were previously treated with hydrochloric acid to obtain them as Brönsted acid and air was used as the oxidizing agent. Zeolite activation was performed at 400 °C in an air flow of 50 mL / min for eight hours. The results showed that only the natural and synthetic mordenite zeolite exchanged with copper and with iron in liquid and solid phase, were able to transform methane into methanol. From the comparison of the three selected natural zeolites, it was deduced that the mordenite structure is essential for the formation of Cu or Fe clusters or clusters, this structure allows a preferential exchange of the sites located in the most restricted cavities or lateral pockets. of its crystalline structure. Mordenite has channels with non-intersecting 12-membered rings with lateral bags with 8-membered rings, where according to the literature, not only the uniformity of the species is achieved, but also a high concentration of these sites, resulting in a good material activity. Chabazite and clinoptilolite zeolites lack these sites. It was observed that the properties of natural and synthetic mordenite, such as the Si/Al ratio, dimension of access channels, ion exchange capacity, among others, are of utmost importance in its use as a catalyst. The importance in the present work is that natural mordenite provided better results than synthetic mordenite, which opens up a promising field to continue the study of natural mordenite.
Síntesis de compósitos hidroxiapatita/colágeno a partir de residuos de pescado con orientación a la regeneración ósea
Authors:   , Ayala Barajas Daniela
Published: March 2023

El presente trabajo está enfocado en la síntesis de un compósito de hidroxiapatita y colágeno que pueda ser empleado en la regeneración de tejido óseo. Los precursores del compósito fueron extraídos de las escamas y piel del pescado Oreochromis hunteri y niloticus (tilapia). El colágeno se extrajo a partir de ambos residuos, mientras que la hidroxiapatita se obtuvo a partir de las escamas. Inicialmente este trabajo se basó en los métodos descritos por Liu et al., y Akkasit et al., para aislar colágeno soluble en ácido (CSA) y colágeno soluble en pepsina (CSP), y en el método de Ulfyana et al. para sintetizar la hidroxiapatita; en el desarrollo experimental se realizaron variaciones que logran resultados novedosos. Se pudo extraer colágeno tipo I tanto de la piel como de la escama, con mayor rendimiento para la piel, y que el polímero extraído presenta una estructura cuya longitud es menor a la reportada para el colágeno proveniente de mamíferos. El rendimiento obtenido fue similar al reportado por Liu et al. Con respecto a la hidroxiapatita, el material extraído de la escama no requirió de la adición del grupo fosfato, como se ha reportado en otros trabajos similares, ya que el material obtenido ya contenía fósforo. El análisis físicoquímico del material compósito mostró que tiene características adecuadas para ser aplicado en el área médica, ya que es un material poroso, rico en calcio, y enriquecido con sodio y magnesio. Además, el aspecto físico del compósito es muy parecido al hueso esponjoso. Teniendo en cuenta que la Tilapia es un pescado de alto consumo en México, lo que genera enormes cantidades de escamas y piel de desecho, el trabajo descrito en esta tesis es una propuesta de recuperación de estos desechos para extraer productos de alto valor agregado, como el Colágeno Tipo I, que puede ser aplicado en el área biomédica.
Shock index is positively correlated with acute blood loss and negatively correlated with cardiac output in a canine hemorrhagic shock model
Authors: Talbot Charles T. , Zersen Kristin M. , Hess Ann M. , Hall Kelly E.
Published: March 2023

OBJECTIVE

To determine whether shock index (SI) positively correlates with percentage blood loss and negatively correlates with cardiac output (CO) in a canine hemorrhagic shock model and whether SI and metabolic markers may be used as end point targets for resuscitation.

ANIMALS

8 healthy Beagles.

PROCEDURES

Between September and December 2021, dogs underwent general anesthesia for experimental induction of hypotensive shock, with the total volume of blood removed, CO, heart rate, systolic blood pressure, base excess, blood pH, and concentrations of hemoglobin, lactate, ionized calcium recorded, and SI calculated at 4 time points (TPs): after anesthetic induction when the dog had been stable for 10 minutes (TP1), 10 minutes after the mean arterial pressure stabilized to a target of 40 mm Hg following jugular removal of up to 60% blood volume to induce hemorrhagic shock (TP2), 10 minutes after autotransfusion of 50% of the removed blood (TP3), and 10 minutes after autotransfusion of the remaining 50% of the removed blood (TP4).

RESULTS

Mean SI increased between TP1 (1.08 ± 0.35) and TP2 (1.90 ± 0.73) and did not return to the prehemorrhage values for TP3 or TP4. SI correlated positively with percentage blood loss (r = 0.583) and negatively with CO (r = –0.543).

CLINICAL RELEVANCE

An increase in SI may support diagnosis of hemorrhagic shock; however, SI cannot be used as the sole end point of resuscitation. Significant differences in blood pH, base excess, and lactate concentration suggested they may be useful markers of hemorrhagic shock and need for blood transfusion.
Slope Stabilization of Twin-Tubes Tunnel Portal by Anchor Bolts Support System
Authors: Khelalfa Houssam , Sakalli U. , Aygar E. B. , Şimşek O. , Aykan Bünyamin , Boulmaali H.
Published: March 2023

It is not known in the literature why the behavior of rocks incurs the tunnel excavation and it remains unclear for what has been calculated in the initial studies. That’s why the most important thing to consider in tunnel construction works is to monitor rock mass behavior. The finite element method (FEM) can also analytically represent the static and dynamic behavior of the rock mass. Concretely, this makes it possible to calculate the behavior of very complex objects numerically. The present study embraces a geophysical prospecting which was carried out by the method of surface seismic tomography to reveal the lithology of the different formations and their geometry and the variation in speed of the subsurface formations at the level of the South portal of the Texana tunnel on Jijel province, in Algeria. The paper also consists in making a two-dimensional numerical study of the stability of the tunnel portals with the Phase.2 2D program. On the other hand, the calculation results will be compared with in-situ surveying to strengthen the numerical modeling. It can be concluded that the Anchor Bolts Support System gives good results in terms of displacement of the rock mass and satisfactory stability in terms of collapse analyzis of the tunnel portals.
Internal Dynamics as Drivers of Change in International Organizations: The Economists’ Takeover at the World Bank
Authors: Hošman Mirek Tobiáš
Published: March 2023

Using the largely untapped episode of the reconstruction of the World Bank’s Economics Department in the mid-1960s, this article aims to augment our theoretical and empirical understanding of intra-organizational change in international organizations (IOs). By analyzing the instruments and mechanisms of dynamic staff agency, it highlights the capacity of norm entrepreneurs, professional groups, and internal administrative units to shape activities and initiate a change of IOs. The article makes a case for a more dynamic constructivist approach to the study of IOs and their ecosystems.
Civil Society at the United Nations Through the Lens of Organizational Sociology: Exclusion and Temporariness
Authors: Kimber Leah R.
Published: March 2023

Studying the inclusion of civil society in international organizations has grown in the last decade. This article repatriates the ongoing scholarly discussions of this inclusion within organizational sociology to answer what the nature of civil society is as an organization at the United Nations. With “temporary organizations” it proposes a relational perspective whereby civil society’s temporariness induces mechanisms of exclusion and vice-versa. In practice civil society actors counter exclusion mechanisms by holding on to their autonomy.
Lidar and AI Based Surveillance of Industrial Process Environments
Authors: Groneberg Maik , Poenicke Olaf , Mandal Chirag , Treuheit Nils
Published: March 2023

The paper describes a system approach to use LiDAR sensors for capturing dynamic point cloud data in industrial process environments and to interpret the captured scenes with AI based object detection. The object detection is used to distinguish between humans and other mobile objects in safety relevant workspaces. Several AI methods relevant for such application are analysed. One method is applied with annotated test data and evaluated concerning its accuracy.
Mixed Reality in Public Space: Expanding Composition Practices in Choreography and Interaction Design
Authors:   , Hedemyr Marika
Published: March 2023

Although artistic augmented reality (AR) and mixed reality (MR) experiences have been discussed in multiple scholarly fields, when it comes to interaction design, comprehensive accounts of actual design practices are rare. To expandour knowledge of design practices, this PhD dissertation brings together choreography and interaction design, approaching MR as site-specificperformance. More specifically, choreography as an expanded practice is used to encourage discussions about the creation of MR experiences in public spaces. The research project involved practice-based research and the creation of three public site-specific MR walks in Göteborg and Mölndal, realised in collaboration with an artistic team and stakeholders from the art, cultural heritage and information technology sectors.The dissertation shows that a choreographic approach provides concrete ways for crafting relations between time, space, bodies and imagination in AR/MR experiences, demonstrating that technology is imbued with site-specific power relations, ethics and aesthetics. These contributions are both practice-oriented and theoretical. They include an expansion of our knowledge of embodied interaction and its relevance to public space, an articulation of choreography as a broad practice that can be applied to technological design and a distinct set of composition practices for site-specificAR/MR experiences.Together, these contributions result in strategies and critical reflection on how AR/MR experiences may be used to reactivate public spaces and their political significance in society through critical, embodied and artistic techniques.
MINIMASI BIAYA PEMBUATAN SABUN DARI MINYAK JELANTAH
Authors: Wahyuningsih Titi , Purwani Annie , Fathonah Cahaya Annisa
Published: March 2023

Saat ini, penelitian pemanfaatan limbah minyak jelantah telah banyak dilakukan, salah satunya yaitu pembuatan sabun transparan dari minyak jelantah oleh anggota bank sampah. Pemanfaatan limbah minyak dalam pembuatan sabun diharapkan dapat menjadi sumber pendapatan baru di bank sampah dengan menjadikannya produk yang diperjual belikan. Pada penelitian ini sabun dibuat dengan tiga jenis essence yaitu lemon, jasmin tea dan biji bunga matahari. Perlu kita ketahui, sebelum produk didistribusikan ke konsumen, perlu dilakukan perhitungan perencaaan produksi agar hasil produksi dapat memenuhi permintaan konsumen. Berdasarkan hal tersebut, dilakukan penelitian untuk menentukan perencanaan produksi yaitu berupa penentuan jumlah produk yang akan diproduksi dari setiap jenis sabun dimana produksi yang dilakukan menggunakan sistem batch. Pada 1 batch  produksi akan menghasilkan 8 pcs sabun dengan essence yang sama dalam satu 1 batch agar tercapai biaya produksi minimum. Penelitian ini menggunakan metode integer linear programing dengan fungsi tujuan minimasi biaya produksi guna mengoptimalkan sumber daya yang tersedia dengan hasil berupa bilangan bulat. Probabilitas permintaan dalam penelitian ini dihitung menggunakan rantai marcov yang merujuk dari berbagai penelitian mengenai penentuan probabilitas kejadian yang akan datang berdasarkan data sebelumnya. Perhitungan berdasarkan data kuisioner minat konsumen terhadap sabun, dihitung menggunakan matriks hingga diperoleh keadaan steady state dan hasilnya dijadikan nilai batasan permintaan. Pengolahan data pada penelitian ini menggunakan software LINGO 11.0 sehingga diperoleh biaya minimum produksi sabun transparan sebesar Rp 219.632,- dengan jumlah sabun yang diproduksi pada masing-masing essence adalah 32 lemon, 24 jasmine tea dan 8 biji bunga matahari. Selanjutnya dilakukan analisis sensitivitas pada kapasitas sumber daya baik bahan baku maupun sumber daya manusia untuk mengetahui pengaruhnya terhadap hasil yang optimal.