bluuebunny/crossref_metadata_2025_split huggingface dataset:
Characterization of nano-additive filled epoxy resin composites (ERC) for high voltage gas insulated switchgear (GIS) applications
Authors: Hari Rathod , Mohana Rao Mandava 
Published: April 2021

AbstractInsulation based on epoxy resin (ER) is widely used for high voltage and high fault current rated electrical substation equipment. This paper details the formulation of epoxy based Nano-composites and influence of the Nano filler material on the electrical and thermal properties like breakdown voltage (BDV), relative permittivity, tanδand thermal conductivity of the epoxy resin composites (ERC). The nano-filler materials such as alumina (Al2O3), silica (SiO2) and titania (TiO2) are considered for the study. Diglycidyl ether of biphenyl-A (DGEBA) type epoxy resin CY5950 and acid anhydride hardener HY5951 are used for development of samples/insulated spacers. Scanning electron microscopy (SEM) images have been established for various ER composites to understand how the dispersion of nano-filler material influences the performance parameters of the samples. In the present study, the sample preparation with metallic inserts has shown additional advantages compared to existing practice of purely insulated samples. Developed samples help to estimate electrical and mechanical properties more accurately. Most appropriate nano filler is identified based on the test results obtained on samples developed in the study. Finally, by using the identified epoxy–filler composite, insulated spacers for 145 kV GIS have been developed and evaluated for electro-mechanical parameters. Necessary dielectric tests have been carried out on developed insulated spacer as per IEC.
Crystal structure of (E)-amino(2-(4-(dimethylamino)benzylidene)hydrazineyl)methaniminium nitrate, C10H16N6O3
Authors: Liu Xiao-Jing , Liu E. , Jin Ze-Sen , Li Zhuang-Yu , Jian Fang-Fang , Liang Tongling 
Published: April 2021

Abstract
C10H16N6O3, monoclinic,

P

2
1

/
c

$P{2}_{1}/c$

(no. 14), a = 7.2312(1) Å, b = 17.7721(3) Å, c = 11.0146(2) Å, β = 104.557°, V = 1370.08(4) Å3, Z = 4, R

gt
(F) = 0.0532, wR

ref
(F
2) = 0.1537, T = 170.0 K.
The crystal structure of 1-dodecylpyridin-1-ium bromide monohydrate, C17H32BrNO
Authors: Sun Yanwen , Chen Zhen , Wang Xiaozhong 
Published: April 2021

Abstract
C17H32BrNO, triclinic,

P

1
‾

$P\bar{1}$

(no. 2), a = 5.344(3) Å, b = 7.871(5) Å, c = 23.614(15) Å, α = 95.990(12)°, β = 95.747(12)°, γ = 98.386(12)°, V = 970.5(11) Å3, Z = 2, R
gt(F) = 0.0550, wR
ref(F
2) = 0.1527, T = 293(2) K.

CCDC no.: 1983264
The crystal structure of Ba
2
Mn(SeO3)2Cl2 containing 1
∞[Mn(SeO3)2Cl2]4− chains
Authors: Geng Lei 
Published: April 2021

Abstract
Ba
2
Mn(SeO3)2Cl2, orthorhombic, Pnnm (no. 58), a = 6.7685(5) Å, b = 12.8618(10) Å, c = 5.4685(4) Å, V = 476.06(6) Å3, Z = 2, R

gt
(F) = 0.0191, wR

ref
(F2) = 0.0854, T = 298(2) K.

CCDC no.: 2076756
Crystal structure of benzo[d][1,3]dioxol-5-yl-2-(6-methoxynaphthalen-2-yl)propanoate, C21H18O5
Authors: Sun Wei , Wang Yan , Zhou Xiao-ping , Zhang Mu-xin , Yang Jin-zhu , Liang Di 
Published: April 2021

Abstract
C21H18O5, monoclinic, P21 (no. 4), a = 9.1511(4) Å, b = 5.6679(3) Å, c = 16.7731(9) Å, β = 93.435(2)°, V = 868.42(8) Å3, Z = 2, R

gt
(F) = 0.0410, wR

ref
(F
2) = 0.1204, T = 296(2) K.
Crystal structure of 3,3′,3″-((1E,1′E,1″E)-((nitrilotris(ethane-2,1-diyl))tris(azaneylylidene)) tris(methaneylylidene))tris(4-hydroxy-1-naphthaldehyde) monohydrate, C42H36N4O6·H2O
Authors: Shi Qing , Zhang Qi-Long , Xu Hong , Huang Ya-Li 
Published: April 2021

Abstract
C42H38N4O7, triclinic,

P

1
‾

$P\bar{1}$

(no. 2), a = 11.8563(6) Å, b = 12.6263(6) Å, c = 13.4492(6) Å, α = 113.563(2)°, β = 96.740(2)°, γ = 104.429(2)°, V = 1733.07(15) Å3, Z = 2, R

gt
(F) = 0.0470, wR

ref
(F
2) = 0.1248, T = 301.72 K.
Interpretation and use of standard atomic weights (IUPAC Technical Report)
Authors: van der Veen Adriaan M. H. , Meija Juris , Possolo Antonio , Hibbert David Brynn 
Published: April 2021

Abstract
Many calculations for science or trade require the evaluation and propagation of measurement uncertainty. Although relative atomic masses (standard atomic weights) of elements in normal terrestrial materials and chemicals are widely used in science, the uncertainties associated with these values are not well understood. In this technical report, guidelines for the use of standard atomic weights are given. This use involves the derivation of a value and a standard uncertainty from a standard atomic weight, which is explained in accordance with the requirements of the Guide to the Expression of Uncertainty in Measurement. Both the use of standard atomic weights with the law of propagation of uncertainty and the Monte Carlo method are described. Furthermore, methods are provided for calculating uncertainties of relative molecular masses of substances and their mixtures. Methods are also outlined to compute material-specific atomic weights whose associated uncertainty may be smaller than the uncertainty associated with the standard atomic weights.
Reflections from Ege University Medical School’s clinical internship mentoring program (2011–2018)
Authors: Sahin Hatice , Erdinc Munevver , Erensoy Selda , Sayiner Abdullah , Coker Mahmut , Ozbek Suha Sureyya , Sagın Ferhan Girgin , Kirazli Tayfun , Aydemir Sohret , Basoglu Ozen Kacmaz , Kultursay Nilgun 
Published: April 2021

Abstract

Objectives
Ege University Medical School initiated system based integrated clinical internship in 2011. The need for a mentor who would closely monitor and guide the student in knowledge and skill gains for every clinical internship block and who would be an academic role model was well established. The aim of this study reports the results of the clinical internship mentoring program in the Ege University Medical School.

Methods
The Clinical Internship Counseling Committee reviewed similar programs in the literature, conducted focus group discussions, determined the wishes and needs of the students, and developed a mentoring program.

Results
The program was initiated by announcing the student-mentor matches and the procedure which was based on meetings of the student-mentor at the 1st, 8th and 13th weeks of the integrated internship. This meeting was designed to be a time for the mentor to guide the student to achieve the internship goals, to establish his/her internship progress file and to be an academic role model. At the final evaluation of the mentor, communication between student and the progress in the establishment of the internship progress file contributed to the 5% of the final internship success grade.

Conclusions
Evaluation of 7 years of experience led to the agreement that the goals of clinical internship program should be integrated into the newly established “Student Mentorship Program” that starts at the 1st year of the medical school.
Pressure dependent ultrasonic properties of hcp hafnium metal
Authors: Singh Ramanshu P. , Yadav Shakti , Mishra Giridhar , Singh Devraj 
Published: April 2021

Abstract
The elastic and ultrasonic properties have been evaluated at room temperature between the pressure 0.6 and 10.4 GPa for hexagonal closed packed (hcp) hafnium (Hf) metal. The Lennard-Jones potential model has been used to compute the second and third order elastic constants for Hf. The elastic constants have been utilized to calculate the mechanical constants such as Young’s modulus, bulk modulus, shear modulus, Poisson’s ratio, and Zener anisotropy factor for finding the stability and durability of hcp hafnium metal within the chosen pressure range. The second order elastic constants were also used to compute the ultrasonic velocities along unique axis at different angles for the given pressure range. Further thermophysical properties such as specific heat per unit volume and energy density have been estimated at different pressures. Additionally, ultrasonic Grüneisen parameters and acoustic coupling constants have been found out at room temperature. Finally, the ultrasonic attenuation due to phonon–phonon interaction and thermoelastic mechanisms has been investigated for the chosen hafnium metal. The obtained results have been discussed in correlation with available findings for similar types of hcp metals.
Acquisition of the Long Jump Skill Using Varying Feedback / Usvajanje tehnike skoka u dalj korištenjem povratnih informacija različitih vrsta i frekvencija
Authors: Puklavec Aleksandar , Antekolović Ljubomir , Mikulić Pavle 
Published: April 2021

The aim of this study was to examine the acquisition of the long jump skill in elementary school children using augmented feedback of varying type and frequency. Eighty-eight boys and girls aged (mean ± SD) 11 ± 0.5 years, without any prior experience in the long jump skill acquisition, were assigned to one of the four study groups: (1) the group receiving only verbal feedback on key errors, (2) the group receiving both verbal and video feedback on key errors, (3) the group receiving both verbal and video feedback on all errors, and (4) the group receiving no feedback. Before and after an 8-week training intervention, long jump distance and relevant kinematic variables were recorded. The results indicated that the group receiving both verbal and video feedback on all errors improved the most in terms of the long jump distance. Varying feedback influenced kinematic parameters differently, as there was no consistent change in the monitored kinematic variables across groups. It was concluded that, when learning a complex motor skill in a typical Physical Education setting, elementary school children are likely to benefit the most when receiving frequent feedback (both verbal and using video analysis, focusing on all errors) in comparison with the situation in which they receive feedback reduced in the type (only verbal) and the frequency (focusing only on key errors).Keywords: bandwidth feedback; kinematics; knowledge of performance; motor learning. --- Cilj ovoga rada bio je ispitati utjecaj različitih količina i vrsta povratnih informacija (PI) u procesu usvajanja tehnike skoka u dalj kod učenika osnovne škole. Osamdeset i osam učenika i učenica, starosti 11 (±0,5) godina, bez prethodnoga iskustva u treningu skoka u dalj, raspodijeljeno je u jednu od četiriju skupina ispitanika koje su dobivale PI: (1) verbalno samo na ključne greške, (2) verbalno i vizualno samo na ključne greške, (3) verbalno i vizualno na sve greške ili (4) nisu primale PI. Duljina skoka i relevantni kinematički parametri skoka u dalj izmjereni su prije i nakon 8-tjednog eksperimentalnoga tretmana. Rezultati istraživanja pokazali su kako je grupa koja je primala PI, na svaku grešku verbalnim i vizualnim putem najviše napredovala u smislu duljine skoka u dalj. Različite količine i vrste PI različito djelovale su na promatrane kinematičke parametre te nisu uočene konzistentne promjene između grupa. Zaključeno je kako djeca osnovnoškolske dobi prilikom usvajanja kompleksne motoričke vještine imaju više koristi od većih frekvencija PI (verbalnih i vizualnih na sve greške) u usporedbi s reduciranim PI prema vrsti (samo verbalne) ili frekvenciji (samo na ključne greške).Ključne riječi: kinematika; motoričko učenje; poznavanje izvedbe; reducirane povratne informacije.
Foreword / Uvodnik
Authors: Topolovčan Tomislav 
Published: April 2021

Dear readers!It is our great pleasure to present to you the first regular issue of the Croatian Journal of Education in 2021. This issue brings ten papers by authors from Bosnia and Herzegovina, Croatia, South Korea, Serbia, Spain and Turkey. Regarding the categorisation of the papers, this time we present four original research papers, three preliminary communications and three review papers. As previously, the featured papers advocate the thematic diversity of the concerns in the field of education. Furthermore, the papers present innovative, creative and multidisciplinary approaches to researching the issues of education. Through the research results and their interpretation, the presented works offer scientific explanations and understandings as well as predictions and control of the research phenomena in the field of education. Thereby we further develop the interdisciplinary and multidisciplinary direction of the Croatian Journal of Education. In this regard, we still wish you much success in your creative and innovative scientific projects, and we are looking forward to many more of your high-quality papers in 2021. --- Dragi čitatelji!Veliko nam je zadovoljstvo predstaviti vam prvi redovni broj Hrvatskog časopisa za odgoj i obrazovanje u 2021. godini. U ovom broju donosimo deset radova autora iz Bosne i Hercegovine, Hrvatske, Južne Koreje, Srbije, Španjolske i Turske. U pogledu kategorizacije radova, ovaj put predstavljamo četiri izvorna znanstvena rada te tri prethodna priopćenja i tri pregledna rada. Kao i do sada, u prikazanim radovima zastupamo tematsku različitost problematike odgoja i obrazovanja. Također, u radovima su zastupljeni inovativni, kreativni i multidisciplinarni metodološki pristupi istraživanja problematike odgoja i obrazovanja. Rezultatima istraživanja i njihovim interpretacijama, u predstavljenim prilozima ovoga broja, ponuđene su nove i inovativne deskripcije, klasifikacije, definicije, znanstvena objašnjenja i razumijevanja te predikcija i kontrola istraživanih fenomena odgoja i obrazovanja. Time i dalje razvijamo interdisciplinarnost i multidisciplinarnost Hrvatskog časopisa za odgoj i obrazovanje. Stoga nam je iznimno drago što na ovaj način predstavljamo nove znanstvene doprinose istraživanja autora predstavljenih priloga. U tom pogledu, i dalje vam želimo mnogo uspjeha u vašim kreativnim i inovativnim istraživanjima i znanstvenim projektima te se radujemo vašim novim kvalitetnim radovima u 2021. godini.
A study of the impact of athletic scholarship on football achievement motivation of university students
Authors: Rahman Balogun Muhammed Shittu Abdul 
Published: April 2021

AbstractVividly, it is not an overstatement to say that football game is the most prominent sport in the recent world. The present study is about the impact of athletic scholarship on football achievement motivation of university students. Athletic type of scholarship helps students to discover, improve and exhibit their football talent and skills. It makes effective contributions to the development of sport within the campus and prepares ambitious and hardworking college or university athletes for the challenges of actualizing their long-term ambitions to become professional footballers. Considering both empirical cum theoretical contributions of this study, the finding practically provides the following suggestions. 1- the finding pinpoints the insights and importance of athletic scholarship and encourage the stakeholders of the university to cultivate the idea of athletic scholarships by extending their scholarship schemes beyond merit and needy bases. 2- It gives an insight that athletic scholarship enables the students to study any academic program and have tendency of becoming professional footballers. 3- importantly, it adds to the literature by investigating the impact of athletic scholarship on football achievement motivation of the students and how the stardoms of being a footballer in the campus affect the students' football interest.
Uso do Tramadol em Cães: uma Breve Revisão
Authors: Gabriela Trettene Lorraine , Lunardi Michele , Cristina Barros Isabelle , Aparecida Godoi Kemper Daniella 
Published: April 2021

O uso do tramadol vem sendo comumente e amplamente realizado na Medicina Veterinária nos últimos anos, o qual vem sendo utilizado tanto para dor aguda quanto para dor crônica. O tramadol é um opioide atípico com baixa afinidade por receptores µ (mu), e com ação monoaminérgica através da inibição da recaptação de norepinefrina e liberação de serotonina. O principal metabólito que é resultante da metabolização do tramadol nas isoenzimas do complexo P450 no fígado, é chamado de O-dismetiltramadol (M1), sendo o principal metabólito responsável pelo efeito analgésico do tramadol. No entanto, esse metabólito é encontrado em uma menor concentração em cães, quando comparado a gatos e humanos. E isso levou a um certo questionamento quanto a eficácia analgésica do tramadol em cães. Ademais, vários estudos já foram realizados avaliando os efeitos do tramadol, tanto em questões farmacocinéticas e farmacodinâmicas quanto em questões de avaliação de doses, vias de administração, e eficácia analgésica. Portanto, estudos a respeito do uso do tramadol em cães são crescentes, sendo necessário que os médicos veterinários se mantenham atualizados, para que possam empregar o fármaco de maneira eficaz. Diante de tais fatos, o presente trabalho teve como objetivo realizar uma revisão de literatura científica dos principais estudos relacionados ao uso do tramadol em cães.

Palavras-chave: Analgesia. O-desmetiltramadol. Opióide. Tramadol.

Abstract
The use of tramadol has been commonly and widely used in Veterinary Medicine in recent years, which has been used for both acute and chronic pain. Tramadol is an atypical opioid with low affinity for µ receptors, and with monoaminergic action through inhibition of norepinephrine reuptake and serotonin release. The main metabolite that results from the metabolization of tramadol in the isoenzymes of the P450 complex in the liver, is called O-dismethyltramadol (M1), being the main metabolite responsible for the analgesic effect of tramadol. However, this metabolite is found in a lower concentration in dogs, when compared to cats and humans. This led to some questioning as to the analgesic efficacy of tramadol in dogs. In addition, several studies have been carried out evaluating the effects of tramadol, both on pharmacokinetic and pharmacodynamic issues and on questions of dose assessment, routes of administration, and analgesic efficacy. Therefore, studies on the use of tramadol in dogs are growing, and it is necessary that veterinarians keep up to date, so that they can use the drug effectively. Given these facts, the present study aimed to conduct a scientific literature review of the main studies related to the use of tramadol in dogs.

Keywords: Analgesia. O-desmethyltramadol. Opioid. Tramadol.
Agroecologia: Perspectivas e Desafios para a Agricultura Familiar
Authors: Gonçalves Larisse Medeiros , Viganó Caroline , Grigolo Chaiane Renata , Monteiro Pedro Henrique da Silva , Vargas Thiago de Oliveira , Godoy Wilson Itamar 
Published: April 2021

Embora a produção sustentável e a agroecologia tenham relevância e vasta quantidade de artigos, há insuficiência de materiais sistemáticos que auxiliem no emprego operativo das características sustentáveis na produção. Esse trabalho traz uma base conceitual que direciona para a sistematização pragmática, no que diz respeito à produção orgânica, por meio de uma revisão bibliográfica. A produção de alimentos em sistemas agroecológicos tem por princípios a adoção de práticas de uso saudável e consciente dos recursos naturais. A produção de orgânicos no Brasil vem apresentando crescimento significativo. Esse avanço está sendo possível devido ao modelo diversificado dos mecanismos de controle de qualidade para produtos de origem ecológica, uma vez que há maior acesso para o registro dos mesmos. Porém, o setor enfrenta várias dificuldades, como problemas de logística, processos burocráticos na certificação e déficit de insumos, além de carência de informações técnicas. Para que tais barreiras sejam superadas, investimentos em pesquisas científicas para aprimorar as técnicas de produção e estratégias de marketing para promoção dos alimentos orgânicos são recursos indispensáveis para o avanço do sistema. Além disso, o governo deve desenvolver políticas para ampliação da produção, oferta e consumo de produtos orgânicos para fortalecer e incentivar tal modelo produtivo.

Palavras-chaves: Alimentos Orgânicos. Certificação. Sistemas Agroecológicos, Desenvolvimento Rural Sustentável.
Abstract
Although sustainable production and agroecology have relevance and a vast number of articles, there is a lack of systematic materials that assist in the operational use of sustainable characteristics in production. This work provides a conceptual basis that leads to pragmatic systematization, regarding organic production, through a bibliographic review. The food production in agroecological systems is based on the adoption of healthy and conscious use of natural resources practices. Organic production in Brazil has been showing significant growth. This progress is being made possible due to the diversified model of quality control mechanisms for ecological origin products, since there is greater access to their registration. However, the sector faces several difficulties, such as logistical problems, bureaucratic processes in certification and deficit of inputs, in addition to a lack of technical information. For these barriers to be overcome, investments in scientific research to improve production techniques and marketing strategies for promoting organic food are indispensable resources for the system advancement. In addition, the government must develop policies to expand the production, supply and consumption of organic products to strengthen and encourage such a productive model.

Keywords: Organic Food. Certification. Agroecological Systems. Sustainable Rural Development.