bluuebunny/crossref_metadata_2025_split huggingface dataset:
Age, growth and reproductive biology of the saddled seabream (Oblada melanura) in the North Aegean Sea, Eastern Mediterranean
Authors: Daban Ismail Burak , Ismen Ali , Ihsanoglu Mukadder Arslan , Cabbar Koray 
Published: March 2020

AbstractThis study determines the length distribution, length– weight relationship, age, growth parameters, mortality rate, sex ratios, length at first maturity and reproduction of saddled seabream (Oblada melanura) collected monthly by fishermen around the Northern Aegean Sea between November 2017 and October 2018. The length–weight relationship was calculated asW=0.0091×L3.11(R2=0.95) and positive allometric growth was found. The condition factor and GSI varied between 0.81–1.58 and 0.01–9.61, respectively. The spawning season extended from May to July and peaked in June. Total lengths at 50% maturity were 18.97 cm for males and 18.83 cm for females. Parameters of the von Bertalanffy growth equation were:L∞ =29.91 cm,K=0.27 per year,t0=−0.82 year and age varied between 1 and 8. The instantaneous rates of total mortality (Z) and natural mortality (M) were 1.36 and 0.58 per year, respectively. Rates for fishing mortalityFand exploitationEwere 0.78 and 0.57 per year, respectively. The mean absolute fecundity (F) was 117 075±23 243 oocytes, ranging from 19130 to 470 132.
Demodex phocidi (Acariformes: Demodecidae) from Phoca vitulina (Carnivora: Phocidae) – the second observation in the world and a supplement to the species description
Authors: Izdebska Joanna N. , Rolbiecki Leszek , Cierocka Karolina , Pawliczka Iwona 
Published: March 2020

Abstract
The present study describes a finding of the demodecid mite Demodex phocidi in the seal Phoca vitulina in the Baltic Sea. This is the first identification in Europe and the second in the world. This is also the first observation of the Demodecidae family in the pinnipeds outside North America. A high density of demodecid mites was observed in the skin of the examined seal, but no symptoms of parasitosis were observed. Our findings also supplement the taxonomic description and morphometry of D. phocidi.
New records ofNaviculasensu stricto from Serbia with taxonomic notes and autecological characterization ofNavicula splendiculaandN. moskalii
Authors: Vidakovic Danijela , Jakovljević Olga , Lazović Vladimir , Šovran Sanja , Krizmanić Jelena 
Published: March 2020

AbstractA total of 15Naviculataxa were recorded in epilithic communities occurring in seven rivers of Serbia, all of which are new to the diatom flora of Serbia. The most interesting of them areN. splendiculaandN. moskalii. When observingN. splendiculaspecimens under SEM, we noticed a characteristic silicate tongue in the center of raphe ends, which had not been previously reported in the available literature. The insufficiently researched distribution ofN. moskaliiand scarce autecological information on the taxon prompted us to provide new details about the species in this study. These findings clearly indicate the need for further comprehensive research that would provide new information on rare taxa.
Marked contrast in wind-driven upwelling on the southeastern Nova Scotia coast in July of two years differing in ENSO conditions
Authors: Scrosati Ricardo A. , Ellrich Julius A. 
Published: March 2020

Abstract
Upwelling occurs on several coasts of the world, but it has mostly been studied on eastern ocean boundaries. We investigated upwelling on a western ocean boundary for which limited information exists. Using daily in-situ data on sea surface temperature (SST), we found a marked contrast in coastal cooling between July 2014 (pronounced) and July 2015 (weak) at two locations 110 km apart on the Atlantic coast of Nova Scotia, Canada. These findings are consistent with a marked interannual difference in wind-driven upwelling. On the one hand, southwesterlies (which cause upwelling on this coast) were more frequent in July 2014 than in July 2015. On the other hand, Bakun’s upwelling index (which is based on wind data and geographic information) indicated that coastal upwelling was more common and intense in July 2014 than in July 2015, while the reverse was true for downwelling. Interestingly, a strong El Niño event occurred in July 2015, while no El Niño (or La Niña) conditions happened in July 2014. In a recent book evaluating upwelling systems around the world, the system that is the focus of the present study was not included. Therefore, our findings should stimulate future research on upwelling on the Atlantic Canadian coast, in that way helping to further develop the knowledge base for western ocean boundaries.
A concise guide to polymer nomenclature for authors of papers and reports in polymer science and technology (IUPAC Technical Report)
Authors: Hodge Philip , Hellwich Karl-Heinz , Hiorns Roger C. , Jones Richard G. , Kahovec Jaroslav , Luscombe Christine K. , Purbrick Malcolm D. , Wilks Edward S. 
Published: March 2020

Abstract
This brief Technical Report summarizes the key points on the nomenclature of macromolecules and polymers.
Deletion of a Neuronal Drp1 Activator Protects against Cerebral Ischemia
Authors: Flippo Kyle H. , Lin Zhihong , Dickey Audrey S. , Zhou Xinchang , Dhanesha Nirav A. , Walters Grant C. , Liu Yujia , Merrill Ronald A. , Meller Robert , Simon Roger P. , Chauhan Anil K. , Usachev Yuriy M. , Strack Stefan 
Published: March 2020

Mitochondrial fission catalyzed by dynamin-related protein 1 (Drp1) is necessary for mitochondrial biogenesis and maintenance of healthy mitochondria. However, excessive fission has been associated with multiple neurodegenerative disorders, and we recently reported that mice with smaller mitochondria are sensitized to ischemic stroke injury. Although pharmacological Drp1 inhibition has been put forward as neuroprotective, the specificity and mechanism of the inhibitor used is controversial. Here, we provide genetic evidence that Drp1 inhibition is neuroprotective. Drp1 is activated by dephosphorylation of an inhibitory phosphorylation site, Ser637. We identify Bβ2, a mitochondria-localized protein phosphatase 2A (PP2A) regulatory subunit, as a neuron-specific Drp1 activatorin vivo. Bβ2 KO mice of both sexes display elongated mitochondria in neurons and are protected from cerebral ischemic injury. Functionally, deletion of Bβ2 and maintained Drp1 Ser637 phosphorylation improved mitochondrial respiratory capacity, Ca2+homeostasis, and attenuated superoxide production in response to ischemia and excitotoxicityin vitroandex vivo. Last, deletion of Bβ2 rescued excessive stroke damage associated with dephosphorylation of Drp1 S637 and mitochondrial fission. These results indicate that the state of mitochondrial connectivity and PP2A/Bβ2-mediated dephosphorylation of Drp1 play a critical role in determining the severity of cerebral ischemic injury. Therefore, Bβ2 may represent a target for prophylactic neuroprotective therapy in populations at high risk of stroke.SIGNIFICANCE STATEMENTWith recent advances in clinical practice including mechanical thrombectomy up to 24 h after the ischemic event, there is resurgent interest in neuroprotective stroke therapies. In this study, we demonstrate reduced stroke damage in the brain of mice lacking the Bβ2 regulatory subunit of protein phosphatase 2A, which we have shown previously acts as a positive regulator of the mitochondrial fission enzyme dynamin-related protein 1 (Drp1). Importantly, we provide evidence that deletion of Bβ2 can rescue excessive ischemic damage in mice lacking the mitochondrial PKA scaffold AKAP1, apparently via opposing effects on Drp1 S637 phosphorylation. These results highlight reversible phosphorylation in bidirectional regulation of Drp1 activity and identify Bβ2 as a potential pharmacological target to protect the brain from stroke injury.
Predicting School-Aged Cognitive Impairment in Children Born Very Preterm
Authors: Erdei Carmina , Austin Nicola C. , Cherkerzian Sara , Morris Alyssa R. , Woodward Lianne J. 
Published: March 2020

BACKGROUND AND OBJECTIVES:
Children born very preterm (VPT) are at high risk of cognitive impairment that impacts their educational and social opportunities. This study examined the predictive accuracy of assessments at 2, 4, 6, and 9 years in identifying preterm children with cognitive impairment by 12 years.

METHODS:
We prospectively studied a regional cohort of 103 children born VPT (≤32 weeks’ gestation) and 109 children born term from birth to corrected age 12 years. Cognitive functioning was assessed by using age-appropriate, standardized measures: Bayley Scales of Infant Development, Second Edition (age 2); Wechsler Preschool and Primary Scale of Intelligence (ages 4 and 6); and Wechsler Intelligence Scale for Children, Fourth Edition (ages 9 and 12).

RESULTS:
By 12 years, children born VPT were more likely to have severe (odds ratio 3.9; 95% confidence interval 1.1–13.5) or any (odds ratio 3.2; 95% confidence interval 1.8–5.6) cognitive impairment compared with children born term. Adopting a severe cognitive impairment criterion at age 2 under-identified 44% of children born VPT with later severe impairment, whereas a more inclusive earlier criterion identified all severely affected children at 12 years. Prediction improved with age, with any delay at age 6 having the highest sensitivity (85%) and positive predictive value (66%) relative to earlier age assessments. Inclusion of family-social circumstances further improved diagnostic accuracy.

CONCLUSIONS:
Cognitive risk prediction improves with age, with assessments at 6 years offering optimal diagnostic accuracy. Intervention for children with early mild delay may be beneficial, especially for those raised in socially disadvantaged family contexts.
Abnormal Pretreatment Liver Function Tests Are Associated with Discontinuation of Peptide Receptor Radionuclide Therapy in a U.S.-Based Neuroendocrine Tumor Cohort
Authors: Heckert Jason M. , Kipnis Sarit T. , Kumar Shria , Botterbusch Samuel , Alderson Alice , Bennett Bonita , Creamer Caroline , Eads Jennifer R. , Soulen Michael C. , Pryma Daniel A. , Mankoff David A. , Metz David C. , Katona Bryson W. 
Published: March 2020

Abstract

Background
Peptide receptor radionuclide therapy (PRRT) is effective for treating midgut neuroendocrine tumors (NETs); however, incorporation of PRRT into routine practice in the U.S. is not well studied. Herein we analyze the first year of PRRT implementation to determine tolerance of PRRT and factors that increase risk of PRRT discontinuation.

Materials and Methods
Medical records were reviewed and data were abstracted on all patients with NETs scheduled for PRRT during the first year of PRRT implementation at a U.S. NET referral center (August 2018 through July 2019). Logistic regression was used to identify factors associated with PRRT discontinuation.

Results
Fifty-five patients (56% male) were scheduled for PRRT over the study period. The most common primary NET location was small bowel (47%), followed by pancreas (26%), and 84% of the NETs were World Health Organization grade 1 or 2. The cohort was heavily pretreated with somatostatin analog (SSA) therapy (98%), non-SSA systemic therapy (64%), primary tumor resection (73%), and liver-directed therapy (55%). At the time of analysis, 52 patients completed at least one PRRT treatment. Toxicities including bone marrow suppression and liver function test (LFT) abnormalities were comparable to prior publications. Eleven patients (21%) prematurely discontinued PRRT because of toxicity or an adverse event. Pretreatment LFT abnormality was associated with increased risk of PRRT cancellation (odds ratio: 12; 95% confidence interval: 2.59–55.54; p &lt; .001).

Conclusion
PRRT can be administered to a diverse NET population at a U.S. NET referral center. Baseline liver function test abnormality increases the likelihood of PRRT discontinuation.

Implications for Practice
Peptide receptor radionuclide therapy (PRRT) can be successfully implemented at a U.S. neuroendocrine tumor (NET) referral center in a NET population that is diverse in tumor location, grade, and prior treatment history. Toxicity and adverse effects of PRRT are comparable to prior reports; however, 21% of individuals prematurely discontinued PRRT. Patients with baseline liver function test abnormalities were more likely to discontinue PRRT than patients with normal liver function tests, which should be taken into consideration when selecting treatment options for NETs.
Social Creation and Media Publicity
Authors: Svitich Luisa , Smirnova Olga , Shkondin Mikhail 
Published: March 2020

The article discusses the problems of formation of a model of informational impulse-wave interaction of society and mass media within a system of social creativity, which were suggested by A.P. Sukhodolov and co-authors, as well as characterizes systematic properties of media publicity as a factor of social creativity on the current civilization stage. Media publi­city is analyzed as an informational phenomenon closely related to social art, to creativity of social practice, to interaction within society providing unity of thought and action, to intellectual interaction within a society, to enrichment of the intellect of audience groups based on continuously updated media reality in the informational potential of mass media.
Long-term results of corneal collagen crosslinking with ectatic forms of corneal dystrophy
Authors: Frolov Oleg A. , Astakhov Sergey Yu. , Novikov Sergey A. 
Published: March 2020

Corneal collagen crosslinking is one of the most effective methods of prophylactics and treatment of progressive corneal ectasias. In the literature, there are occasional data related to remote results concerning only the most common form of ectasias keratoconus. In published studies, no remote results are met concerning the efficacy of corneal collagen crosslinking in other forms of corneal ectasias, which are now on the rise, including secondary ectasias that became more frequent with refractive surgery. The number of diagnosed cases of pellucid marginal degeneration increased as well. The literature shows no data on comparative analysis of remote results concerning the efficacy of this method in treatment of various forms of corneal ectasias.
The aim of the investigation was to evaluate the efficacy of corneal collagen crosslinking based on the analysis of long-term results of this treatment method for various forms of corneal ectasias.
Materials and methods. The results of corneal collagen crosslinking in patients with various forms of corneal ectasia 6 years after surgery were analyzed. The nosological structure of the study included patients with keratoconus, pellucid marginal degeneration, and secondary ectasia. The group of patients with keratoconus included 30 patients (30 eyes), that with pellucid marginal degeneration 30 patients (30 eyes), and that with secondary ectasia 30 patients (30 eyes). Corneal collagen crosslinking was performed by the same specialist, during the first or the second year of follow-up. Then changes in the state of the cornea and visual functions were monitored for 6 years. To assess the efficacy, preoperative examination results and interim data were used.
Results. In all groups, there was an increase in the best corrected visual acuity, a decrease in the index of asymmetry of the corneal surface and its refractive power in the center of ectasia. However, best corneal collagen crosslinking results were obtained in groups of patients with keratoconus and secondary corneal ectasia.
Collaborative Work in Mathematics Teacher Education
Authors: Gumiero Bárbara Silva , Pazuch Vinícius 
Published: March 2020

Collaborative work improves teacher education through the interaction between people, narrowing the distance between university and schools and between researchers and preservice or in-service teachers. This systematic literature review included works published in databases like Scielo, ERIC, PsycINFO, Web of Science, and MathEduc. In total, 12 papers were reviewed to identify which factors present in collaborative environments favor the formation of teaching processes in Mathematics Education. The results show that class planning, teaching practices, and knowledge production provide a contribution to mathematics teacher education.

Keywords: Teacher Collaboration. Teacher Education. Mathematics Education. Systematic Review.

Resumo
O trabalho colaborativo potencializa a formação de professores por meio da interação entre pessoas, aproximando a universidade da escola e os pesquisadores dos professores em formação ou já atuantes. Esta revisão sistemática da literatura incluiu trabalhos publicados em bases de dados como Scielo, ERIC, PsycINFO, Web of Science e MathEduc. No total, 12 artigos foram revisados para identificar quais fatores presentes em ambientes colaborativos favorecem a constituição de processos formativos em Educação Matemática. Os resultados mostram que o planejamento de aulas, a prática docente e a produção de conhecimentos contribuem para a formação de professores de matemática.

Palavras-chave: Colaboração entre Professores. Formação de Professores. Educação Matemática. Revisão Sistemática.
A Geometria Elementar e Intuitiva de Gabriel Prestes
Authors: Silva Maria Célia Leme da 
Published: March 2020

O presente estudo tem a intenção de compreender como Gabriel Prestes, considerado um expert (Hofstetter et al, 2017) da educação, por ocupar lugar de destaque na direção da Escola Normal de São Paulo, propõe o ensino de uma geometria escolar. A análise toma como fonte central o manual Noções Intuitivas de Geometria Elementar produzido por Prestes e publicado em 1895. O exame do manual fornece indícios de proposta inovadora: proximidade com a obra francesa de Paul Bert (1886), inversão na marcha dos conteúdos tradicionalmente apresentados ao propor um estudo direto das medidas de linhas, áreas e volumes para o segundo ano primário, uso de materiais como fios, barbantes, papelão, recortes de papel, construção de sólidos para um trabalho experimental, de comparação e discussão das medidas, o emprego do desenho à mão livre como auxiliar nas recapitulações. Entretanto, a perda de poder político e o afastamento de Gabriel Prestes da Educação são fatores que corroboram para que a sua proposta de uma geometria intuitiva não tenha feito escola.

Palavras-chave: Taquimetria. História do Ensino de Geometria. Grupos Escolares de São Paulo. Século XIX.

Abstract
The present study intends to understand how Gabriel Prestes, considered an expert (Hofstetter et al, 2017) of education, to occupy a prominent place in the direction of the Normal School of São Paulo, proposes the teaching of a school geometry. The analysis takes as its central source the Manual Notions Intuitive of Elementary Geometry produced by Prestes and published in 1895. The examination of the manual provides indications of an innovative proposal: proximity to the French work of Paul Bert (1886), reversal of the traditionally presented contents by proposing a direct study of the measurements of lines, areas and volumes for the second primary year, use of materials such as yarn, string, paperboard, paper cutting, solids construction for experimental work, comparison and discussion of measures, employment of freehand drawing as an aid in recapitulations. However, the loss of political power and the removal of Gabriel Prestes from Education are factors that corroborate so that his proposal of an intuitive geometry did not make school.

Keywords: Tachymetry. History of Geometry Teaching. School Groups in São Paulo. XIX Century.
As Manifestações do Raciocínio em uma Sequência Didática Sobre Função com o Auxílio de um Software
Authors: Gonzales Kátia Guerchi , Sales Antonio 
Published: March 2020

Este trabalho é um recorte do relato de uma pesquisa experimental com o uso do software Graphmática. O experimento deu-se através de uma sequência didática com estudantes do ensino médio de uma escola pública de Campo Grande, MS. A metodologia utilizada foi a dialógica e teve por objetivo analisar a contribuição do software e da dialogia para fazer emergir os raciocínios classificados por Peirce como abdutivo, indutivo e dedutivo. Os resultados indicam que essa possibilidade existe, mas requer mais tempo de convivência com os estudantes para conquistar confiança e corrigir algumas fragilidades decorrentes da pouco familiaridade deles com a tecnologia de bancada, bem como, alguns vícios de notação e comunicação verbal construídos durante a vida escolar.

Palavras-chave: Graphmatica. Abdutivo. Indutivo. Dedutivo. Educação Matemática.

Abstract
This work is a cut of the report of an experimental research with the use of the software Graphmática. The experiment was carried out through a didactic sequence with high school students from a public school in Campo Grande, MS. The methodology used was the dialogic, which had as objective analyze the software's contribution and the dialogism to emerge the reasonings classified by Peirce as abductive, inductive and deductive. The results indicate that this possibility exists, but it requires more time with the students to gain confidence and to correct some weaknesses due to their lack of familiarity with bench technology, as well as some notation and verbal communication habits built during the school life.
Keywords: Graphmatica. Abductive. Inductive. Deductive. Mathematical Education.
Quality Higher Education and Students’ Perception: A Study on Private Universities of Bangladesh
Authors: Rahman Md. Mizanur 
Published: March 2020

This is a pragmatic study conducted to explore the quality higher education and students’ perception towards the private universities in Bangladesh. This study examines the relationship between the quality higher education and students’ perception using a structured questionnaire. A total number of 500 senior undergraduate and graduate level students from ten selected private universities in Bangladesh were taken as sample for conducting the study. The finding of this study discloses that the quality higher education is a dynamic factor that ensures the students’ perception. It also shows that quality higher education can create positive students’ perception towards the private universities in Bangladesh. Reliability, Responsiveness, Competence, Tangibility, Courtesy, Goodwill & Image, Empathy, Security and Costs are the dimensions of quality higher education. To quantify the variables a five point “Likert- type” scale has been used in this paper. The researcher conducted various analyses such as Multiple Regression Analysis, Descriptive Analysis, and ANOVA and identified a numerous key findings as to the students’ perception towards the quality higher education.
JEL Classification Code: I20; I23
Current Account Dynamics, Adjustment and Capital Mobility in Bangladesh
Authors: Alam Mohammad Masud , Khondker Rezai Karim , Molla Mohammad Shahansha 
Published: March 2020

This paper examines current account (CA) dynamics, its relationship with the degree of capital mobility and the state of integration of the Bangladesh capital market with the global capital market. For the period 1976-2012, findings of AR (1) process shows a rigid CA position along with its slow adjustment and its inflexibility against real shocks, lower degree of capital mobility and a slow progress of capital market integration with the rest of the world. Compared to the period of fixed exchange rate regime, lesser degree of rigidity has been observed during the flexible exchange rate period suggesting a smooth and flexible current account position; but shows an increased degree of rigidity and capital immobility for the overall time period under consideration. These findings reveal some important policy implications in respects of current and capital account liberalization, deregulation of domestic markets and removing entry barriers on the part of Bangladesh to boost up FDI and remittance inflows.