bluuebunny/crossref_metadata_2025_split huggingface dataset:
Peptides conformational changes of the erythrocyte membrane induced by organometallic tin compounds
Authors: Żyłka Romuald , Kupiec Justyna , Przestalski Stanislaw 
Published: June 2012

Peptides conformational changes of the erythrocyte membrane induced by organometallic tin compoundsThe paper presents the results of a study on the effect of selected organic chlorides of tin on peptide conformations of erythrocyte ghosts from pig blood. The following compounds were used: dibutyltin dichloride (DBT), tributyltin chloride (TBT), diphenyltin dichloride (DPhT) and triphenyltin chloride (TPhT). Peptide conformation changes were determined on the basis of measurements done with the ATR FTIR technique. This method made it possible to measure the percent share of a peptide with specified conformation in the whole amount of the peptides in the membranes studied. The investigation showed that all the tin organic compounds studied cause a several-percent decrease in the quantities of both the peptides with the α-helix and turn conformation, and about a 20% increase in ghost peptides with β-sheet conformation. It seems that the changes observed can cause disturbances in the function of proteins and, consequently, the activity of the membrane; and this may be one of the aspects of the toxic properties of organotins.
Ultraweak luminescence of the Characeae plants under the circumstances of cyclical changes in temperature
Authors: Borc Robert , Dudziak Andrzej , Jaśkowska Anna 
Published: June 2012

Ultraweak luminescence of theCharaceaeplants under the circumstances of cyclical changes in temperatureThe study sought to measure ultraweak chemiluminescence (UWL) ofNitellopsis Obtusaplants with regards to temperature changes within the range from 4°C to 38°C. The temperature changes were being executed in reversible cycles. The variations of UWL intensity with temperature had an exponential character. In case when temperature was changed rapidly by 5°C every 20 min or fluently with rate of 0.17 °C/min we observed a temperature hysteresis loop in the first cycles and the loop character disappeared in the second cycles. When the temperature was being changed fluently but faster (1.3 °C/min) after 3 cycles (about 2 hours) the curves no longer manifested the loop character. This phenomenon can point that the plants adapted themselves to the temperature changes. We also observed a stimulation of UWL made in successful cycles. Our spectral experiments showed that the UWL may consist mainly of emission of the singlet oxygen sigma (762 nm) and induced emission of chlorophyll.
Interaction of plant alkaloid, berberine, with zwitterionic and negatively charged phospholipid bilayers
Authors: Gąsiorowska Justyna , Wesołowska Olga , Michalak Krystyna 
Published: June 2012

Interaction of plant alkaloid, berberine, with zwitterionic and negatively charged phospholipid bilayers
Berberine exhibits many pharmacological activities e.g. antibacterial, anti-inflammatory, antiproliferative and apoptosis-inducing. Interaction of berberine with model membranes was studied for the first time using differential scanning calorimetry, fluorescence spectroscopy and turbidity measurements. Influence of berberine on thermotropic properties of bilayers formed from zwitterionic DMPC was insignificant, whereas in bilayers formed from negatively charged DMPG berberine reduced the temperature and cooperativity of main phospholipid phase transition. In higher concentrations berberine induced complex double-peak transition, with the new peak appearing in temperature higher than the original one. It suggested the interaction of the alkaloid with lipid headgroup region of the bilayer. Additionally, berberine quenched fluorescence of Prodan to a higher extent than Laurdan that pointed to stronger interaction with membrane segments close to its surface. Berberine-induced fluorescence quenching of both probes was more pronounced in DPPG than in DPPC bilayers. It was concluded that electrostatic interactions governed berberine association with model membrane.
Review - Flavins as photoreceptors of blue light and their spectroscopic properties
Authors: Grajek Hanna 
Published: June 2012

Review - Flavins as photoreceptors of blue light and their spectroscopic propertiesThis review describes 1) the development of studies on flavin photoreceptors as blue light photoreceptors in many living organisms: their kinds and functions; 2) the studies on spectroscopic properties of flavins, both their dimers and monomers; 3) nonradiative excitation energy transport in the presence of monomers and fluorescent/nonflurescent FMN dimers (excitation traps). The existence equilibrated luminescent FMN centers, energy migration and excitation sink to FMN dimers are taken into account.
Educational Action Research to Generate Ecological Wisdom of Insight for Inclusion and Sustainability
Authors: Gedžūne Inga , Gedžūne Ginta , Skrinda Astrīda , Mičule Ilona 
Published: June 2012

Educational Action Research to Generate Ecological Wisdom of Insight for Inclusion and Sustainability
This study relates the experience of educational action research with pre-service teachers aimed at exploring their views on ecological identity, which is considered the basis for a person's life activity, and its orientation towards inclusion in or exclusion from the global community of life. Through gradual opening of communicative space and participation in critical discourse, research participants became involved in the cycles of reflection on their experiences of interaction with the social and natural world to reveal the features of individual and collective ecological identity that they consider most characteristic for themselves and their community. The present study describes how, through exploration of ecological identity which was found to have four dimensions (cognitive, affective, axiological and conative) as well as a clearly perceived orientation towards apprehended belonging to the community of life and its support system, the participants of educational action research engaged in the process of generating ecological wisdom of insight for sustainability (person's inclusion in the living world based on inclusive interrelations with the global community of life and its support system). We argue that it is a wisdom that pre-service teachers need so as to be able to help their pupils become responsible members of the community of life and actors of change for a sustainable future.
Informing Society About Pre-School Education and Educational Support in the Context of Sustainable Development
Authors: Kazlauskiene Ausra , Gaucaite Ramute , Juodaityte Audrone 
Published: June 2012

Informing Society About Pre-School Education and Educational Support in the Context of Sustainable Development
Society qualitatively participates in the implementation of corresponding tasks only when it is informed. An analysis of the National Strategy for Sustainable Development of Lithuania expresses concern regarding shortage of information: information receivers are scantily informed, whilst information providers themselves are scantily informed about actual information needs. In Lithuania, informing of society is carried out in both centralised and decentralised ways, when the state makes certain commitments regarding informing of residents because this information enhances attention to educational institutions, including pre-school educational institutions (as a link of education, social support, support to the family and the child), and encourages the interest of interested groups in the quality of children's education. Seeking to ensure sustainable development, in the name of possibilities of more extensive participation of society in pre-school education management processes, freedom in decision-making, and in the name of the formation of society consisting of active and responsible citizens, it is necessary to analyse the experiences of informing the society. Therefore, the research is orientated towards generalisation of the experiences of informing the society in the European Union countries in the context of sustainable development.
Technological Support and Problem-Based Learning as a Means of Formation of Student's Creative Experience
Authors: Cakula Sarma 
Published: June 2012

Technological Support and Problem-Based Learning as a Means of Formation of Student's Creative Experience
Problem-based learning and technology support for students in higher education investigates the new perspectives of education in connection with the change of life paradigm. The present research seeks to find out what study methods and technology support can be used for developing students' creative experience in the context of education for sustainable development. The research provides an analysis of the main concepts revealing the essence of the study process. The opportunities of using information technology in the study process to meet the needs of students' research activities in the form of cooperative learning are described. The research is based on Dewey and Brunner's theory as a basis of the educational process in the modern world of technologies. Developing creative experiences is a basic concept for sustainable development of education in today's information society.
Perspectives of Education for Sustainable Development - Understanding and Introducing the Notion in Polish Educational Documents
Authors: Czapla Małgorzata , Berlińska Agnieszka 
Published: June 2012

Perspectives of Education for Sustainable Development - Understanding and Introducing the Notion in Polish Educational Documents
The aim of this article is to present an analysis of formal educational documents in the context of the sustainable development notion. This goal was realised by an analysis of the National Curriculum Framework documents from 2002 in comparison with the newest document from 2008. In addition, seven teaching programmes were analysed. On the grounds of the sustainable development definition and in the context of UNECE Strategy of Education for Sustainable Development, a list of direct and indirect linguistic indicators was created. To count the key words, the text editor Adobe Reader 9.0 was used. In the oldest version of the National Curriculum Framework, the key words defining sustainable development or their components occurred 119 times, in the newest - 165 times. The new version covers the scope of sustainable development in a wider range.
Environment for Meaningful Development of Reading Literacy in Pre-School
Authors: Zariņa Sandra , Belousa Inga 
Published: June 2012

Environment for Meaningful Development of Reading Literacy in Pre-School
At a time when the scope and influence of information technologies are rapidly increasing, the development of reading literacy becomes a challenge for teachers. Pre-school teachers have a special role in the development of reading literacy, because children display interest in the written text and the information it holds already in pre-school. It is thus important that the child's first encounter with text be pleasant and exciting, personally significant and applicable for reaching one's goals and satisfying one's needs in everyday life. Hence, the development of reading literacy in pre-school ought to be meaningful, which cannot be ensured in a traditional, teacher-focused learning environment. That is why the paper summarises the best practical experience in a meaningful development of reading literacy. The conclusion is reached that a meaningful development of reading literacy occurs in an environment specially designed by teachers with constructivism as its theoretical basis.
Stable dynamics in a Greenland tidewater glacier over 26 years despite reported thinning
Authors: Bevan Suzanne L. , Murray Tavi , Luckman Adrian J. , Hanna Edward , Huybrechts Philippe 
Published: June 2012

AbstractDaugaard Jensen Gletscher, Greenland, is a large tidewater glacier terminating in the northwest corner of the Scoresby Sund fjords. We present a time series of surface flow speeds spanning 1985–2010 based on feature tracking of satellite images. The time series confirms that flow speeds remained stable and reveals a persistent summer acceleration of up to 10% over the lower 10 km of the glacier. The front of the 6 km floating tongue fluctuates by little more than the average size of calved icebergs, ~1 km. While we are unable to detect any imbalance between ice discharge and surface mass balance within our error estimates, observations suggest that the region is losing mass and experiencing decreases in surface elevation. We conclude that as flow speeds and surface mass balance have remained steady since 1985, the shift from balance to imbalance, leading to elevation decrease, must have occurred prior to this date. As for other stable Greenland tidewater glaciers, the seasonal melt cycle is the dominant influence on flow velocity variation but, if the apparent current thinning rates continue, there is potential for the grounding line to retreat, for calving rates to increase and for the glacier to accelerate.
Pneumococcal disease: emergence of serotypes 19A and 7F following conjugate pneumococcal vaccination in a Mexican hospital
Authors: Chacon-Cruz Enrique , Velazco-Mendez Yazbeck , Navarro-Alvarez Samuel , Rivas-Landeros Rosa Maria , Volker Maria Luisa , Lopez-Espinoza Graciano 
Published: June 2012

Introduction: Mexico was the first country to initiate massive vaccination with heptavalent pneumococcal conjugate vaccine (PCV-7) in children. There is no information regarding pneumococcal invasive disease (PID) in children before and after implementation of PCV-7 in Mexico or elsewhere in Latin America. Methodology: During October 2005 to September 2010, active surveillance for pediatric PID was initiated at Tijuana General Hospital. Only culture-confirmed cases from sterile fluids were included in the study. Serotype identification was also performed. Results: Twenty-eight pediatric PID cases were confirmed. Streptococcus pneumoniae was the main cause of pleural empyema (n = 13). It was also the second most common cause of confirmed bacterial meningitis (n = 10), followed by Neisseria meningitidis (n = ?), and the only cause of otomastoiditis with bacterial isolation (n = 5). Vaccine-associated serotypes decreased from 54% before PCV-7 introduction to the vaccination schedule, to only 5.6% after PCV-7 implementation. Serotypes 19A and 7F (47% and 33% respectively) were predominant following PCV-7 vaccination. Conclusions: Serotype substitution in PID is present in the northern border of Mexico following PCV-7 vaccination in children.
Invasive Fungal Infections in Patients with Systemic Lupus Erythematosus
Authors: MARTÍNEZ-MARTÍNEZ MARCO ULISES , HERRERA-VAN OOSTDAM DAVID , ROMÁN-ACOSTA SUSANA , MAGAÑA-AQUINO MARTÍN , BARANDA-CÁNDIDO LOURDES , ABUD-MENDOZA CARLOS 
Published: June 2012

Objective.Invasive fungal infections (IFI) are catastrophic diseases associated with a high mortality. Relatively few cases of IFI have been described in systemic lupus erythematosus (SLE) and their related factors have not been completely explored. We evaluated factors associated with IFI in patients with SLE.Methods.All patients with both IFI and SLE admitted to our hospital in the last 7 years were evaluated and each was compared with 5 hospitalized patients with SLE (controls). Demographic factors, duration of SLE, and treatment in the previous month were compared.Results.Sixty patients with SLE were evaluated (10 with IFI and 50 controls). Median age was 29 years. High C-reactive protein levels were associated with IFI, along with other factors such as high disease activity, mechanical ventilation, treatment with antibiotics, hemodialysis, high doses of glucocorticoids (GC), and treatment with mycophenolate mofetil. Mortality was 4 times more frequent in patients with IFI than in SLE patients without the deep fungal infection.Conclusion.IFI is a rare infection observed in patients with rheumatic diseases. We describe factors associated with IFI in patients with SLE. IFI is associated with elevated morbidity and mortality. Early diagnosis and treatment are desirable.
Proof of the Completeness of Darboux Wronskian Formulae for Order Two
Authors: Shemyakova E. 
Published: June 2012

AbstractDarboux Wronskian formulas allow us to construct Darboux transformations, but Laplace transformations, which are Darboux transformations of order one, cannot be represented this way. It has been a long-standing problem to discover what other exceptions exist. In our previous work we proved that among transformations of total order one there are no other exceptions. Here we prove that for transformations of total order two there are no exceptions at all. We also obtain a simple explicit invariant description of all possible Darboux transformations of total order two.
Bifurcation Diversity in an Annular Pool Heated from Below: Prandtl and Biot Numbers Effects
Authors: Torregrosa A. J. , Hoyas S. , Pérez-Quiles M. J. , Mompó-Laborda J. M. 
Published: June 2012

AbstractIn this article the instabilities appearing in a liquid layer are studied numerically by means of the linear stability method. The fluid is confined in an annular pool and is heated from below with a linear decreasing temperature profile from the inner to the outer wall. The top surface is open to the atmosphere and both lateral walls are adiabatic. Using the Rayleigh number as the only control parameter, many kind of bifurcations appear at moderately low Prandtl numbers and depending on the Biot number. Several regions on the Prandtl-Biot plane are identified, their boundaries being formed from competing solutions at codimension-two bifurcation points.
Are We Overlooking Our ‘Gold Mine’? Use of Symphysial Autograft for Treatment of Periodontal Osseous Defect
Authors: Bhardwaj Amit , Grover Harpreet Singh , Luthra Shailly 
Published: June 2012

ABSTRACT
This case report presents a technique for utilizing autogenous corticocancellous graft from the mandibular symphysial area to fill a three-walled infrabony defect in a patient diagnosed with generalized aggressive periodontitis. After debridement, a 9 mm defect was present distal to the mandibular first molar. Autogenous bone graft harvested from the mandibular symphysial region was placed in the defect. There was a significant fill at the site 9 months postoperative and a reduction in probing depth was recorded at 4 mm.

How to cite this article
Bhardwaj A, Grover HS, Luthra S. Are We Overlooking Our ‘Gold Mine’? Use of Symphysial Autograft for Treatment of Periodontal Osseous Defect. Int J Exper Dent Sci, 2012;1(1):40-44.
O gasto aluno-ano no Paraná (Brasil) e a situação de financiamento da educação nas regiões metropolitanas do Estado
Authors: Gouveia Andréa Barbosa , Silva Isabelle Fiorelli 
Published: June 2012

A distribuição dos recursos para a educação no Brasil, atualmente operada principalmente pela “política de fundos”, recebe influência, dentre outros determinantes, das condições político-econômicas regionais do país. O trabalho apresenta uma avaliação do gasto aluno-ano no Estado do Paraná considerando o tamanho dos municípios e o pertencimento ou não a regiões metropolitanas do Estado. Para isso, utilizaram-se os dados financeiros disponíveis na Secretaria do Tesouro Nacional (Finbra) e dados de balanços municipais. Problematizam-se os limites da redistribuição de recursos decorrentes das políticas de fundos – Fundo de Manutenção e Desenvolvimento do Ensino Fundamental e de Valorização do Magistério (Fundef) e Fundo de Manutenção e Desenvolvimento da Educação Básica e de Valorização dos Profissionais da Educação (Fundeb) – no contexto paranaense e a manutenção das desigualdades de oferta educacional em contextos de metropolização.
Evolución de la actividad económica del municipio de El Porvenir, Atlántida
Authors: Pineda Kelly Johana Alemán 
Published: June 2012

El Porvenir es un municipio ubicado en el departamento de Atlántida, Honduras. Desde su origen sus actividades económicas han estado ligadas a la agricultura sobre todo de pequeñas fincas bananeras; con el tiempo se ha desarrollado un crecimiento económico y social que ha permitido diversificar sus actividades económicas y productivas. Actualmente el principal rubro económico del municipio sigue siendo la agricultura en especial la relacionada con cultivos de exportación (piña, banano, cítricos, palma africana).Se identifican otras actividades como la ganadería, la apicultura, silvicultura y pesca cuya producción está orientada en su mayoría al consumo interno. Otra de las actividades económicas con mucho potencial en la zona es el turismo sobre todo porque el municipio cuenta con extensas zonas de playa y áreas protegidas como el Parque Nacional Pico Bonito y el refugio de Vida Silvestre Cuero y Salado. DOI: http://dx.doi.org/10.5377/pdac.v7i0.688 Revista Población y Desarrollo: Argonautas y Caminantes, Vol. 7, No. 7, 2011 pp.17-23
Probabilistic evaluation of ensemble discharge nowcasts in two nested Alpine basins prone to flash floods
Authors: Liechti Katharina , Zappa Massimiliano , Fundel Felix , Germann Urs 
Published: June 2012

AbstractThe quality of hydrological discharge simulations depends to a great extent on the uncertainties in the meteorological input and the model parameterization. To quantify these uncertainties, we adopt ensemble techniques in a 4‐year nowcast experiment for two nested flash‐flood–prone basins in the southern Swiss Alps.The spatiotemporal uncertainties in the weather radar quantitative precipitation estimates (QPE) were accounted for by applying an ensemble of 25 radar fields. To account for uncertainties in model parameterization, a Monte Carlo experiment was run to find 26 equifinal model realizations. The resulting parameter ensemble, consisting of 26 members, was run with precipitation input obtained from interpolated pluviometer data and with the deterministic operational weather radar QPE.To produce the discharge nowcast, the PREcipitation‐Runoff‐EVApotranspiration HRU Model (PREVAH) was used. PREVAH was calibrated for the main catchment Verzasca. The results for the sub‐catchment Pincascia are an independent internal verification of the nowcasting system.The three ensemble nowcasts and the two deterministic nowcasts are evaluated for a 4‐year time series and for two events included in that period. The event analysis shows no clear superiority for either pluviometer‐based or radar‐based nowcasts. The performance for single events depends heavily on the storm characteristics. However, the evaluation of the 4‐year nowcast shows that pluviometer‐based nowcasts outperform radar‐based nowcasts in the gauged and calibrated catchment and that there is added value in the application of parameter ensembles.For the small, ungauged catchment, the results achieved by the radar‐based nowcasts are superior to the pluviometer‐based nowcasts. Especially the radar ensemble proves to be of significant advantage for flash flood nowcasts in such catchments. Copyright © 2012 John Wiley & Sons, Ltd.