bluuebunny/crossref_metadata_2025_split huggingface dataset:
Remote Teaching in a Preclinical Phantom Course in Operative Dentistry During the COVID-19 Pandemic: Observational Case Study (Preprint)
Authors: Kanzow Philipp , Krantz-Schäfers Christiane , Hülsmann Michael 
Published: May 2021

BACKGROUND

During the acute COVID-19 pandemic, physical access to the University Medical Center Göttingen was restricted for students. For the first time at our dental school, theoretical knowledge was imparted to students via asynchronous online screencasts and discussed via synchronous video meetings only.

OBJECTIVE

We aimed to assess the acceptance and effectiveness of distance education as a new teaching format for theoretical knowledge within the preclinical course in Operative Dentistry (sixth semester of the undergraduate dental curriculum in Germany).

METHODS

The phantom course comprised distance education (first phase, 11 weeks) and subsequent on-site practical demonstrations and training (second phase, 10 weeks). All theoretical knowledge was taught via online screencasts during distance education (except for the first week, 3 screencasts were uploaded per week resulting in a total of 30 screencasts). Until the end of the term, all students (N=33) were able to view the screencasts for an unlimited number of times. Theoretical knowledge was assessed in a summative examination after practical on-site teaching. Acceptance and effectiveness of the new curriculum and distance education were also measured based on an evaluation survey and students’ self-perceived learning outcome, which was compared to the outcome from the two pre–COVID-19 terms.

RESULTS

Each screencast was viewed by a mean of 24 (SD 3.3) students and accessed a mean of 5.6 (SD 1.2) times per user (ie, by students who accessed the respective screencast at least once). During distance education, the number of accesses showed a linear trend over time. During the practical training phase, screencast views declined and increased again prior to the examination. Screencasts covering topics in Cariology, Restorative Dentistry, and Preventive Dentistry were viewed by more students than screencasts covering topics in Endodontology or Periodontology (both <i>P</i>=.047). Examination items in Periodontology showed inferior results compared to the other topics (<i>P</i>&lt;.001). Within the different topics, students’ self-perceived learning outcome did not differ from that during the pre–COVID-19 terms. Although most students agreed that the presented screencasts contributed to their learning outcome, pre–COVID-19 term students more strongly felt that lectures significantly contributed to their learning outcome (<i>P</i>=.03).

CONCLUSIONS

Screencasts showed high acceptance and effectiveness among the students but were not used as a learning tool by all students. However, students who viewed the screencasts accessed each screencast more frequently than they could have attended a conventional lecture. Screencast views were mostly due to intrinsic motivation.
SOLVENT-FREE SYNTHESIS OF AMIDE: A NOVEL TECHNIQUE OF GREEN CHEMISTRY
Authors: GOHIL CHIRAGKUMAR J , N NOOLVI MALLESHAPPA 
Published: May 2021

Objective: Amide is one of the most important functional group presents in the chemicals, pharmaceuticals, and foods. Conventionally, it has been synthesized from the carboxylic acid and amines. This conventional reaction is lengthy and involves hazardous chemicals and solvents. Hence, it poses waste management, solvent removal, and environmental issues to the industries. To overcome this limitation, we have reported the green chemistry-based method for the synthesis of amide from carboxylic acid and urea.
Methods: In this reaction, we have used boric acid as a catalyst, it is a simple and readily available compound. It is simple, efficient, and solvent-free procedure which involves the trituration of the reactant mixture and subsequent, direct heating of the triturated mixture.
Results: The rate of reaction is very high and can synthesize the amide quickly.
Conclusion: Various amides were prepared in good yield by this technique.
A SIMPLE AND EFFICIENT MICROPROPAGATION PROTOCOL FOR DEVELOPING PLANTLETS OF EXACUM BICOLOR ROXB. – AN ENDANGERED, ORNAMENTAL, AND ANTIDIABETIC HERB
Authors: S ACHAR SHARAD , VINJAMURI SAISHA 
Published: May 2021

Objective: Exacum bicolor Roxb. is an endangered medicinal herb due to overexploitation by humans and its inefficient vegetative reproduction. Here, we report an efficient and simple procedure for the regeneration of E. bicolor Roxb. using leaf as an explant.
Methods: The optimal concentrations of the hormones needed for callus induction were determined by full factorial method using DOE (Design expert ver. 8.0). The hormones selected based on literature were kinetin, indole acetic acid, and 6-Benzylaminopurine (BAP). Multiple shoot regeneration was carried out in liquid and solid media with the optimal concentrations of the hormones obtained by DOE. Rooting was initiated using Murashige and Skoog media containing naphthalene acetic acid 0.5 mg/l, indole butyric acid (IBA) 1.0 mg/l, and gibberellic acid 3 0.5 mg/l along with 0.2% of activated charcoal.
Results: Analysis of full factorial design run showed that BAP in combination with kinetin was effective for the growth of callus and multiple shoot regeneration was higher in liquid media (81.25%). The rate of rooting was observed to be 88.23% and the average number of roots was 0.26. Plantlets with budding apical region and well-established leaves and roots were observed in 30 days.
Conclusion: The protocol reported here can be used for effective production of E. bicolor plants in a shorter duration compared to the conventional approach.
Condições de trabalho e capital cultural de professoras de filosofia no ensino médio
Authors: Prado Wanessa Cristina Santos , Eugenio Benedito 
Published: May 2021

Resumo
Neste artigo apresentamos os resultados de uma pesquisa que objetivou compreender as condições em que se efetiva o exercício da docência para o professor de Filosofia de uma escola estadual baiana do ensino médio e como essas condições conferem posições sociais e implicam na construção do habitus professoral. Os dados foram construidos por meio de uma pesquisa qualitativa do tipo exploratória. O instrumento empregado para a produção dos dados foi a entrevista semiestruturada com duas docentes de uma escola pública de Vitória da Conquista-Ba. O referencial teórico empregado nas análises é a sociologia de Bourdieu. As conclusões apontam que mesmo com as dificuldades presentes e o desprestígio da docência, esta possibilita às professoras a ampliaçãodo capital cultural.

Palavras-chave: Condições de trabalho. Capital cultural. Ensino de Filosofia.
The relation between neck strength and psychological distress: preliminary evidence from collegiate soccer athletes
Authors: Porfido Tara , de Souza Nicola L , Brown Allison M , Buckman Jennifer F , Fanning Brian D , Parrott James S , Esopenko Carrie 
Published: May 2021

Aim: To examine whether neck strength and symmetry are associated with psychological function in athletes with exposure to repetitive head impacts. Methods: Collegiate soccer (n = 29) and limited/noncontact (n = 63) athletes without a history of concussion completed the Brief Symptom Inventory 18 and assessments of isometric neck strength. Neck strength symmetry was calculated as the difference in strength between opposing muscle groups. Results: The results demonstrated that lower neck strength was associated with more symptoms of anxiety, whereas asymmetry in neck strength was associated with more symptoms of somatization and depression in soccer athletes only. Conclusion: These preliminary results suggest that greater neck strength/symmetry is related to better psychological function in athletes who have higher exposure to repetitive head impacts.
Ar divvērtīgā mangāna joniem aktivēta magnija germanāta materiāla ilgspīdošā luminiscence
Authors:   Latvijas Universitāte, Kalniņa Aija 
Published: May 2021

In the course of study, 10 different MgGeO3:Mn2+ samples with different manganese 2+ ion concentrations were synthesized: 0 mol%, 0.1 mol%, 0.25 mol%, 0.5 mol%, 0.75 mol%, 1 mol%, 1.5 mol%, 2 mol%, 5 mol% and 10 mol%. The samples emit a good luminescence in the red spectrum diapason and can be excited by ultraviolet radiation and X-rays. Samples can shine for up to more than 10 hours after excitation. X-ray diffraction, excitation spectra, luminescence spectra, afterglow spectra, extinction kinetics and thermostimulated luminescence were measured for samples. The obtained results provide the basis for assessing the processes taking place in the materials and the effect that the concentration of admixture ions has on the luminescence. Perhaps in the future it will be possible to use magnesium germanate in medical diagnostic equipment, yielding a further improved insight into the human body. In this case, the results of the study will be useful for medical application.
Frequency of Autoantibody-Negative Type 1 Diabetes in Children, Adolescents, and Young Adults During the First Wave of the COVID-19 Pandemic in Germany
Authors: Kamrath Clemens , Rosenbauer Joachim , Tittel Sascha R. , Warncke Katharina , Hirtz Raphael , Denzer Christian , Dost Axel , Neu Andreas , Pacaud Danièle , Holl Reinhard W. 
Published: May 2021

OBJECTIVE
The aim of this study was to investigate the frequency of newly diagnosed type 1 diabetes without evidence of autoimmunity and the respective frequencies of ketoacidosis in children, adolescents, and young adults during the coronavirus disease 2019 (COVID-19) pandemic in Germany compared with the previous decade.

RESEARCH DESIGN AND METHODS
Based on data from the German Diabetes Prospective Follow-up Registry (DPV), we compared data from 715 children, adolescents, and young adults, newly diagnosed with type 1 diabetes during the COVID-19 pandemic in Germany between 1 March and 30 June 2020, with data from 5,428 children, adolescents, and young adults of the same periods from 2011 to 2019. Adjusted differences and relative risks (RRs) of negative β-cell autoantibody test results and diabetic ketoacidosis were estimated using multivariable log-binomial regression analysis. An upper noninferiority test (margin 1%) was applied to evaluate whether the autoantibody-negativity rate in 2020 was not higher than that in 2011 to 2019.

RESULTS
The estimated frequencies of autoantibody negativity in 2020 and 2011–2019 were 6.6% (95% CI 5.1–8.4) and 7.2% (95% CI 6.5–8.0), respectively, with an absolute difference of −0.68% (90% CI −2.07 to 0.71; Pupper noninferiority = 0.023). The increase of the estimated frequency of diabetic ketoacidosis during the COVID-19 pandemic was similar between autoantibody-negative and -positive type 1 diabetes (adjusted RRs 1.28 [95% CI 0.80–2.05] and 1.57 [1.41–1.75], respectively).

CONCLUSIONS
This study found no evidence that the COVID-19 pandemic leads to a significantly increased number of new cases with autoantibody-negative type 1 diabetes in children, adolescents, and young adults. In addition, autoantibody-negative type 1 diabetes showed no particular susceptibility to ketoacidosis, neither before nor during the pandemic.
Study Effect of Some Atmospheric Elements on COVID-19 Infections in Iraq
Authors: Hassoon Ahmed Fattah , Hussain Hazim H. , Ibraheem Nagham T. 
Published: May 2021

In late 2019 and in Wuhan, a new disease appears, consider as an extension of SARS-COV2 epidemic. This epidemic virus has configured a danger to global health. We studied the effect of some atmospheric elements in Iraq with a number of (COVID-19) infections. In this study daily infections in three regions of Iraq compares with (Tmax-Tmin) and (RH) observed in stations Mosul (represent north region), Baghdad and Rutba (represent middle regions), and Basra (represent south region). It's found that increasing the difference between Tmax and Tmin means more infections, except for the northern province. As for the relative humidity, it is inversely proportional to infections with the correlation coefficient R = -0.6 in Baghdad station, and in the southern province with R = -0.32, and the opposite occurs in the northern province. The results also indicate that increasing the relative humidity to more than 70% was effective in increasing the infections. Solar radiation was studied over the city of Baghdad and its effect on infections because solar radiation contains a large proportion of ultraviolet rays that killed many viruses, the study indicates an inverse relationship because most of the patients are infected in the shade and there is no clear relationship. In late 2019 and in Wuhan, a new decease appears, consider as extension of SARS-COV2 epidemic. This epidemic virus has configured a danger on the global health. We studied the effect of some atmospheric elements in Iraq with number of (COVID-19) infections. At this study daily infections in three regions of Iraq compare with (Tmax-Tmin) and (RH) observed in stations Mosul (represent north region), Baghdad and Rutba (represent middle regions) and Basra (represent south region). It's found that increasing the difference between Tmax and Tmin means more infections, except for the northern province. As for the relative humidity it is inversely proportional to infections with the correlation coefficient R = -0.6 in Baghdad station, and in the southern province with R = -0.32, and the opposite occurs in the northern province. The results also indicate that increasing the relative humidity to more than 70% was effective in increasing the infections. Solar radiation was studied over the city of Baghdad and its effect on infections because solar radiation contains a large proportion of ultraviolet rays that killed many viruses, the study indicates an inverse relationship because most of the patients are infected in the shade and there is no clear relationship.
‘Double activation’: Workfare meets marketisation
Authors: McGann Michael 
Published: May 2021

Abstract
Since the financial crisis, Ireland’s welfare state has been reorientated around a regulatory, ‘work-first’ activation model. Claimants now face penalty rates for non-compliance with activation requirements that have been significantly extended since 2009. Alongside these formal policy reforms, the organisations delivering Public Employment Services, and the modes by which they are commissioned, have also been reconfigured through a series of New Public Management style governance reforms, including, most notably, the creation of a quasi-market for employment services (JobPath) in 2015. This article addresses the intersection between activation and quasi-marketisation, positioning the latter as a form of ‘double activation’ that reshapes not only how but also what policies are enacted at the street level. It unpacks their shared logics and mutual commitment to governing agents at a distance through a behavioural public policy orientation, and reflects on the extent to which marketisation is capable of producing lower-cost but more responsive employment services.
Sacrificial citizens? Activation and retrenchment in Ireland’s political economy
Authors: Dukelow Fiona 
Published: May 2021

Abstract
This article provides a critical commentary on Irish activation policy. It is framed with reference to the point made in Pathways to Work 2016–2020 that a key purpose of activation is ‘to help ensure a supply of labour at competitive rates’. It looks at how a tougher work-first activation regime can be situated within the wider landscape of reform and retrenchment in the social protection system following the 2008 financial crisis. Broadly utilising Pierson’s concepts of programmatic and systemic retrenchment, it situates the roll-out of activation within shifts toward greater reliance on means-tested benefits for the unemployed, and toward work first, with varying degrees of compulsion, for other working-age adults in the social protection system. Suggesting that this results in a hierarchy of ‘welfare sacrifice’ for the sake of the competitiveness of the Irish economy, it also looks briefly at how some of these ‘sacrifices’ are experienced by different groups both in and out of the labour market. The article concludes by noting that the Covid-19 pandemic has temporarily transformed state–market relations such as these; however, whether this offers the opportunity to forge a more supportive turn in activation policy post-pandemic remains an open question.
Aspects related to the interconnection between music and the human brain. Scientific discoveries and contemporary challenges
Authors: Filimon Rosina Caterina 
Published: May 2021

Abstract
A new scientific discipline, neuromusicology, connects the scientific research of music and that of the nervous system, in particular of the brain. It studies the effects of music on the brain; the present paper relates to this particular field. Initially, the right hemisphere was associated with the process of music reception and it was considered that the activation of the left hemisphere was the responsibility of language. Neuroimaging, however, demonstrates that the elements of musical language activate various brain areas in both hemispheres, simultaneously generating the perception of music and emotions. Research in the field of psychoacoustics has revealed that listening to music triggers the production of neurotransmitters in the body that relieve pain, reduce stress and anxiety. Another effect determined by listening and studying music is the structural changes that occur at brain level due to brain neuroplasticity. Pathological changes at brain level have consequences in perception and influence all human activities. Disease alters the artistic creativity of people suffering from various pathologies, biographies of many artists proving that neurological diseases influenced their artistic activity. Decoding the functioning of the brain in the presence of music and its effects on brain activity make it possible to use music therapy as a complementary method to medical treatment. The harmful effects of the current Covid-19 pandemic on the brain are obvious and are already reported in completed or ongoing research studies. The adoption of music as a therapeutic tool in the current global epidemiological crisis highlights its undeniable qualities in multiple pathologies and updates its mental and somatic benefits, complementary to medicine. All this provides an important drive in the reassessment and reconfiguration of the need to amplify the interference strategies between the field of music and that of medicine, implicitly that of neurology.
Romanian-Greek manuscript inventory number 27 Anthology – An Account of the activity of the copyist Chiril Monahul from Bisericani Monastery (Neamt County)
Authors: Dănilă Irina Zamfira 
Published: May 2021

Abstract
This paper is a fraction of an ampler project aimed at classifying and studying the entire collection of musical manuscripts from the “Dumitru Stăniloae” Ecumenical Library of the Metropolitan Church of Moldavia and Bukovina of Iasi. This documentary collection consists of a number of 32 musical manuscripts, in Chrysantine notation mainly originating from the 19th century. Manuscript 27 was created in 1846 by Cyril the Monk from the Bisericani Monastery (Neamt county) – he was a psalter, composer and copyist of great talent. He wrote other two manuscripts, ms. inventory numbers 23 and 31/49, which are in the “Dumitru Stăniloae” Ecumenical Library of the Metropolitan Church of Moldavia and Bukovina of Iasi. His own creation (with the mention “by the writer”) in Ms. 27 contains the first psalm, Blessed is the man in the plagal of the 4th mode, the troparia God is with us in the plagal of the 4th mode, the polyeleos Good word in the 4th mode legetos, the doxastikon of the Easter, The day of Ressurection, the plagal of the 1st mode and two heirmoi of the Holy Week. These are chants that are remarkable through their fluidity and expressiveness, as they retain the specific psaltic melodic formulas and reveal a balanced analytical musical writing. The liturgical music in Manuscript 27 consists of various chants, from those performed during the Vespers to the Matin and the Liturgy. Following analysis of the manuscript’s repertoire, I discovered that the main source of Ms. 27 is the first three volumes of the Anthology by Nektarios Frimu, published in Neamț (3rd volume, 1840) and Iași (1st and 2nd volume, 1846). Cyril the Monk, the copyist of Ms. 27, selected works from these sources, and introduced along the self-authored chants mentioned earlier, chants by other lesser-known authors, such as Nechifor (The Blessings of the Ressurection, the plagal of 1st mode in Greek) and Calinic (troparia from the chant Lord is with us, the plagal of the 4th mode in Romanian and the polyeleos The Lord’s servants, the plagal of the 2nd mode, in Greek). Besides, among the chants in Romanian, the manuscript records chants in Greek (by established Greek authors), which are proof of the continuous practice of the Greek chanting in Moldavia, long with that in Romanian, in the period before the Reforms (1863-1864) introduced by Alexandru Ioan Cuza, the ruler of the Romanian Principalities.
Inhibition of in Vitro Rumen Methane Production by Three Statins
Authors: Joch Miroslav , Vadroňová Mariana , Výborná Alena , Jochová Kateřina 
Published: May 2021

Abstract
The aim of this study was to evaluate the effects of increasing concentrations of three pure statins on in vitro methane production and rumen fermentation. The effects of atorvastatin, rosuvastatin and simvastatin at three concentrations (1, 10, and 100 mg/L of culture fluid) were evaluated using in vitro 24 h batch incubation of buffered rumen fluid with a 70:30 forage:concentrate substrate. All statins tested demonstrated the ability to reduce methanogenesis. Methane inhibition potential was decreasing in the following order: simvastatin>atorvastatin>rosuvastatin. Methane production was reduced (P<0.05) by simvastatin at 10 mg/L (by 9.3%) and by atorvastatin at 100 mg/L (by 13.2%) without compromising fermentation and feed digestibility. Simvastatin at 100 mg/L decreased methane production by 26.2%, however, net production of volatile fatty acids (nVFA) was also reduced (P<0.05). The only effect of rosuvastatin was a slight reduction (P<0.05) of methane proportion at 10 and 100 mg/L. Simvastatin and atorvastatin at 100 mg/L increased (P<0.05) relative proportion of propionate at the expense of acetate and butyrate. Ammonia-N concentrations were not affected (P>0.05) by statins. The current study demonstrated that selected statins could selectively decrease methane production. The effects of statins on methanogenesis and overall rumen fermentation vary depending on statin type and concentration. Hydrophobic statins, such as simvastatin and atorvastatin, seem to be more effective compared to the hydrophilic statins, such as rosuvastatin.
Overwintering mortality of the oak lace bug (Corythucha arcuata) in Hungary – a field survey
Authors: Paulin Márton , Hirka Anikó , Csepelényi Mariann , Fürjes-Mikó Ágnes , Tenorio-Baigorria Imola , Eötvös Csaba , Gáspár Csaba , Csóka György 
Published: May 2021

Abstract
The North American oak lace bug (Corythucha arcuata) was first discovered in Europe (Norhern Italy) in 2000. It started a rapid area expansion in the last decade and has been reported in 20 countries so far. Almost all European oaks are suitable hosts. On top of the host availability, abiotic factors like weather/climate may also have a decisive impact on its further spread and future outbreaks. We conducted a simple field survey within three years, at five locations to estimate the overwintering mortality of the species. Our results suggest that not even a relatively harsh winter (as 2016/2017) caused severe mortality in the overwintering populations. The average mortality of the nine year/location combinations was 30.6% (range 9.1–58.5%). Based on this, the low winter temperature is unlikely to restrict its further spread, therefore continuing area expansion can be predicted.