bluuebunny/crossref_metadata_2025 huggingface dataset:
Students’ Attitudes towards the Use of Slovene as L1 in Teaching and Learning of Business English at Tertiary Level
Authors: Gajšt Nataša
Published: June 2017

Over the past decades, the monolingual (English-only) approach to English language teaching and learning has prevailed. In recent years, however, the trend of using students’ first language (L1) in teaching and learning English as a foreign language has re-emerged. However, the research on the use of L1 in teaching English for specific purposes is far from extensive. The aim of this study was to investigate the use of Slovene as the students’ L1 in teaching and learning Business English at tertiary level. The specific objectives were to determine the students’ attitudes towards the teachers’ and the students’ use of Slovene during Business English lessons and the students’ use of Slovene in learning Business English. The present study was quantitative, with data gathered via a questionnaire. The results show that, on the one hand, there is some inclination towards the use of L1 both in class and during their study of Business English. On the other hand, the preference towards the use of predominantly (or exclusively) English in class is also present and is positively correlated with the level of students’ knowledge of English. The results are of value to English language teachers as they suggest the contexts in which students’ L1 could be used in the process of teaching and learning English for specific purposes.
A freely-available authoring system for browser-based CALL with speech recognition
Authors: O'Brien Myles
Published: June 2017

A system for authoring browser-based CALL material incorporating Google speech recognition has been developed and made freely available for download. The system provides a teacher with a simple way to set up CALL material, including an optional image, sound or video, which will elicit spoken (and/or typed) answers from the user and check them against a list of specified permitted answers, giving feedback with hints when necessary. The teacher needs no HTML or Javascript expertise, just the facilities and ability to edit text files and upload to the Internet. The structure and functioning of the system are explained in detail, and some suggestions are given for practical use. Finally, some of its limitations are described.
The perceptions of a situated learning experience mediated by novice teachers’ autonomy
Authors: Booth Paul , Guinmard Isabelle , Lloyd Elizabeth
Published: June 2017

With the development of online language learning comes a growing need for courses in language teaching to incorporate educational technologies into course content. The challenge this development poses is how to incorporate educational technologies in teacher education programmes to prepare teachers for online language teaching. This study explores the way in which an authentic environment of English online and at a distance is facilitated by novice teachers and how their perceptions of the experience influence their own autonomy. The article presents how novice teachers cope with the complexity of the design of online materials, their pedagogy and their expectations. Data were collected via semi-structured interviews and novice teachers’ own evaluations of the course. The study found the opportunities and challenges for novice teachers in materials design, more complex roles and course expectations as they self-direct themselves in terms of both their learning and pedagogical skills. These findings suggest that teachers’ perceptions of situated learning can be shaped by their own teacher autonomy.
Effectiveness of Ultrasonic and Manual Dynamic Agitation Techniques in Irrigant Penetration: An in vitro Study
Authors: Suprabha BS
Published: June 2017

Aim

The aim is to compare the extent of irrigant penetration into root canals up to the working length and in simulated lateral canals after passive ultrasonic irrigation (PUI) and manual dynamic agitation (MDA).

Materials and methods

Root canals of 36 single-rooted extracted teeth were shaped using rotary files. Irrigation was done with 5.25% sodium hypochlorite and 17% ethylenediaminetetraaceticacid. Teeth were decalcified in 5% nitric acid. Lateral canals were created by inserting 10 K-files and then, the teeth were cleared using methyl salicylate. Samples were randomly divided into three groups of 12 teeth each: Group I — Control, group II — PUI, and group III — MDA. A contrast solution was delivered to the root canals during final irrigation and activation. Specimens were photographed using dental operating microscope, and the mean length of dye penetration was measured.

Results

Data were analyzed using analysis of variance (ANOVA), Tukey test, and repeated measures ANOVA. Passive ultrasonic irrigation group showed the highest penetration of the irrigant upto the working length followed by MDA. Manual dynamic agitation and PUI groups had equivocal results in lateral canal irrigation.

Conclusion

Passive ultrasonic irrigation technique is the most effective in delivering the irrigants up to the working length. The effectiveness of PUI and MDA is equivocal in lateral canal irrigation, and hence, MDA can be considered an alternative to PUI, in the case of nonavailability of PUI.

Clinical significance

The clinician can consider the use of MDA technique for irrigant agitation in root canals as an alternative to PUI, based on the extent of irrigant penetration.

How to cite this article

Khare M, Suprabha BS, Yadav A, Shenoy R, Boaz K, Rao A. Effectiveness of Ultrasonic and Manual Dynamic Agitation Techniques in Irrigant Penetration: An in vitro Study. World J Dent 2017;8(3):207-212.
Evaluation to prevent the Physical Changes in Colored Elastomeric Modules when exposed to various Dietary Media
Authors: Babu K Pradeep , Kumar A Nanda , Kanya S Dhivya , Venkatesan R
Published: June 2017

Aim and objective

The aim of the study is to analyze and compare the variation of lumen size and thickness of the elastomeric colored modules when immersed in four selected dietary media.

Materials and methods

Sample size of 40 modules on each color – such as red, blue, green, and black – was taken and immersed in four dietary media (artificial saliva, coke mixed with artificial saliva, turmeric mixed with artificial saliva, and coffee mixed with artificial saliva). Beakers containing different dietary media and color modules are kept in the incubator at 37°C for 72 hours. After incubation period, all the segments of module strips removed from the dietary media were placed under the electric lamp and photographs were taken using Canon camera (SX400 IS). Photographs were transferred to GIMP software, and lumen size and thickness variation in the modules was measured.

Results

Statistical analysis were performed using analysis of variance and t-test in Statistical Package for the Social Sciences software. It showed significant difference in thickness of black module in all dietary media. Significant difference existed between all the lumen sizes of four color modules in four dietary media.

Conclusion

This study was done to identify the material that has more changes in physical properties when exposed to various dietary media.

Clinical significance

According to the results obtained, black color modules have increased in lumen size in all dietary media. In thickness, red color module showed less variation and black color module exhibited more variation.

How to cite this article

Kanya SD, Babu KP, Venkatesan R, Kumar AN. Evaluation to prevent the Physical Changes in Colored Elastomeric Modules when exposed to various Dietary Media. J Contemp Dent Pract 2017;18(6):458-462.
Comparative Evaluation of Stress developed on Rotary Retreatment Instruments during Retrieval of Gutta-percha
Authors: Shivanna Sushmita , Sihivahanan Dhanasekaran , Reddy T Vinay Kumar , Thomas Anchu Rachel , Senthilnathan Natarajan , Sivakumar Murali
Published: June 2017

Aim

The aim of the study is to compare the maximum stress distribution on the rotary retreatment instruments within the root canal at cervical, middle, and the apical one-third during retreatment of gutta-percha.

Materials and methods

A human mandibular premolar was scanned, and three-dimensional geometry of the root was reconstructed using finite element analysis (FEA) software package (ANSYS). The basic model was kept unchanged; tooth models were created using the same dimensions and divided into two groups as follows: Group I: ProTaper Universal retreatment system and group II: Mtwo rotary retreatment system. The stress distribution on the surface and within the retreatment files was analyzed numerically in the FEA package (ANSYS).

Results

The FEA analysis revealed that the retreatment instruments received the greatest stress in the cervical third, followed by the apical third and the middle third. The stress generated on the ProTaper Universal retreatment system was less when compared with the Mtwo retreatment files.

Conclusion

The study concludes that the retreatment instruments undergo higher stress in the cervical third region, and further in vivo and in vitro studies are necessary to evaluate the relationship between instrument designs, stress distribution, residual stresses after use, and the torsional fracture of the retreatment instrument.

Clinical significance

The stress developed on the rotary retreatment instruments during retrieval of gutta-percha makes the instrument to get separated. There is no instrument system, i.e., suitable for all clinical situations and it is important to understand how the structural characteristics could influence the magnitude of stresses on the instrument to prevent its fracture in use.

How to cite this article

Sihivahanan D, Reddy TVK, Thomas AR, Senthilnathan N, Sivakumar M, Shivanna S. Comparative Evaluation of Stress developed on Rotary Retreatment Instruments during Retrieval of Gutta-percha. J Contemp Dent Pract 2017;18(6):484-489.
Utility of Dermatoglyphic Pattern in Prediction of Caries in Children of Telangana Region, India
Authors: Asif Shaik M , Babu Dara BG , Naheeda Shaik
Published: June 2017

Introduction

Dermatoglyphics is an extremely useful tool as a preliminary investigation method for diagnosing suspected genetic disorders. Caries being a multifactorial disease with the influence of genetic pattern, early identification of caries risk children with dermatoglyphics can help in using effective and efficient caries preventive measures.

Aims and objectives

The study was undertaken to record and know the frequency of occurrence of fingerprint patterns among children with caries and in children without caries.

Materials and methods

A total of 400 schoolchildren in the age group of 5 to 12 years were selected from a private school, Warangal, Telangana, India. Of 400 schoolchildren, 200 children were with caries group and 200 children were in caries-free group. Children with dental caries in five or more teeth based on the decayed, missing, filled teeth index performed were considered as study group, and the control group was normal healthy children without any dental caries. The fingerprints of each child were recorded using stamp pad method, and type of dermatoglyphic pattern of each digit was recorded based on Cummins and Midlo method. Data obtained were put for statistical analysis; p < 0.001 was considered statistically significant.

Results

Although the frequency of whorl pattern was more prevalent in caries group, it was statistically significant on the left hand third digit of females and on the right hand third digit and the left hand fourth digit of males. Fingerprints of female caries-free group showed maximum of ulnar loop and males showed maximum of arches. There was a decrease in total ridge count in caries group, especially in males.

Conclusion

Dermatoglyphics could be an appropriate method to explore the possibility of a noninvasive and an early predictor for dental caries.

Clinical significance

Dermatoglyphics has a future role in identifying people with or at increased risk for dental caries so that risk reduction measures or earlier therapy may be instituted.

How to cite this article

Asif SM, Balaji Babu DBG, Naheeda S. Utility of Dermatoglyphic Pattern in Prediction of Caries in Children of Telangana Region, India. J Contemp Dent Pract 2017;18(6):490-496.
Photodynamic Therapy in Endodontics
Authors: Mohammadi Zahed , Shalavi Sousan , Kinoshita Jun-Ichiro , Jafarzadeh Hamid
Published: June 2017

Commonly used irrigants do not always eradicate the entire microbial flora in infected root canals. Therefore, several other strategies, such as photodynamic therapy (PDT) have been developed. Photoactivated disinfection is based on the interaction of a photosensitive antibacterial agent and a light source. It uses a nontoxic dye named photosensitizer (PS) and lowintensity visible light. In oxygen presentation, these combine to produce some cytotoxic species. The PS molecules attach to bacteria membrane. Irradiation with a specific wavelength of the light may lead to the production of singlet oxygen, resulting in rupture of the microbial cell wall. There are several applications for PDT in dentistry. A successful periodontal treatment is based on elimination of bacteria from the infected area. Phenothiazinium PSs have been shown to be highly effective and safe for this purpose. However, scaling/root planing should be performed before the PDT. While performing the PDT, PS should be first injected in the periodontal pocket and allowed to pigment. Then, the special fiber should be inserted 1 mm short of the pocket base and lased. Photodynamic therapy has also been used to disinfect caries dentin before restoration, disinfecting oral tissues before or during surgical procedures, treating denture stomatitis, and treating oral candidiasis in immunocompromised patients. Photodynamic therapy can be used in combination with mechanical instrumentation and chemical antimicrobial agents, such as sodium hypochlorite, too. The purpose of this study was to review historical perspective, mechanism of action, and applications of PDT in dentistry and especially in endodontics was reviewed. Furthermore, the effects of PDT on dentin bonding and endotoxin are discussed.

Clinical significance

Photodynamic therapy has been advocated to increase the disinfection level of the root canal system.

How to cite this article

Mohammadi Z, Jafarzadeh H, Shalavi S, Kinoshita JI. Photodynamic Therapy in Endodontics. J Contemp Dent Pract 2017;18(6):534-538.
Tissue Extraction and Morcellation: The Menace of Unexpected Malignancy
Authors: Abdusattarova Khulkar
Published: June 2017

Uterine fibroids are a common indication for hysterectomy or myomectomy. Even with optimal preoperative imaging, unexpected uterine sarcoma can be detected in histopathology after uterine fibroid surgery. In case of inadvertent morcellation of an unexpected uterine sarcoma the clinical outcomes, due to the rapid intraperitoneal dissemination of malignant tissue during the procedure can be negatively influenced. The purpose of this study was to determine the prevalence of uterine sarcoma in women undergoing hysterectomy or myomectomy for benign uterine fibroids. We performed retrospective study (2003-2014 years). The total number of women operated for uterine fibroids was 2297. Of this, 938 (42.5%) women had myomectomies and 1269 (57.5%) women had hysterectomies. In myomectomies the most frequently used surgical method was laparoscopic myomectomy in 591(63%) cases, followed by hysteroscopy myomectomy in 306 (32.62%) cases, and laparotomic myomectomy only in 41 (4.37%) cases. In hysterectomies, laparoscopic approaches significantly dominated in 1163 (61.1%) cases, showing laparotomic approaches in 491(25.82%) cases and vaginal approaches in 247 (12.99) cases. Only one patient with endometrial stromal sarcoma (ESS) was not preoperatively diagnosed and treated as symptomatic uterine fibroid; this patient underwent laparoscopic supracervical hysterectomy. In the post-operative histopathological examination ESS was detected. Thus, our incidence of sarcomas among women who underwent benign uterine fibroid surgery is 1/2297 (0,043%). Laparoscopic power morcellation should be performed only in cases with no suspicion of malignancy Patients, who undergo laparoscopic surgery with power morcellation should be informed about the possible risks of morcellation in cases of rare not suspected malignant disease.

How to cite this article

Mettler L, Abdusattarova K. Tissue Extraction and Morcellation: The Menace of Unexpected Malignancy. Int J Gynecol Endsc 2017;1(1):1-4.
Invasive Pre- and Postnatal Genetic Evaluation reduces the Reproductive Risk in the Era of Noninvasive or Minimally Invasive Prenatal Screening Method
Authors: Chakravarty Amit , De Puspal , Chakravarty Sudipa
Published: June 2017

Introduction

Spontaneous abortion has been reported in 15 to 20% of all diagnosed pregnancies. The most common cause of spontaneous abortion is chromosomal abnormalities of the embryo. Robertsonian translocation is one of the major chromosomal rearrangements with a prevalence rate of 0.1% of the general population and 1% of the infertile population. Robertsonian translocation carriers especially 21,14 are the most common balanced rearrangements among the carrier couples with a history of spontaneous abortion.

Materials and methods

Cytogenetic evaluation of both the partners and the child revealed that the child had translocated Down’s syndrome and the mother was carrier of balanced Robertsonian translocation of 14q;21q. Amniocentesis of the next pregnancy and detection of chromosomal abnormality in the fetus were done by fluorescence in situ hybridization (FISH) analysis of the amniotic cells with 13,18,21,X,Y probe mix.

Conclusion

The present case study shows that genetic counseling, cytogenetic evaluation, prenatal diagnosis by amniocentesis, and FISH together help couples with nonhomologous RT and history with syndromic child and repeated abortions to get normal offspring.

How to cite this article

De P, Chakravarty S, Chakravarty A. Invasive Pre- and Postnatal Genetic Evaluation reduces the Reproductive Risk in the Era of Noninvasive or Minimally Invasive Prenatal Screening Method. Int J Gynecol Endsc 2017;1(1):35-39.
A new methodology for PBL height estimations based on lidar depolarization measurements: analysis and comparison against MWR and WRF model-based results
Authors: Bravo-Aranda Juan Antonio , de Arruda Moreira Gregori , Navas-Guzmán Francisco , Granados-Muñoz María José , Guerrero-Rascado Juan Luis , Pozo-Vázquez David , Arbizu-Barrena Clara , Olmo Reyes Francisco José , Mallet Marc , Alados Arboledas Lucas
Published: June 2017

Abstract. The automatic and non-supervised detection of the planetary boundary layer height (zPBL) by means of lidar measurements was widely investigated during the last several years. Despite considerable advances, the experimental detection still presents difficulties such as advected aerosol layers coupled to the planetary boundary layer (PBL) which usually produces an overestimation of the zPBL. To improve the detection of the zPBL in these complex atmospheric situations, we present a new algorithm, called POLARIS (PBL height estimation based on lidar depolarisation). POLARIS applies the wavelet covariance transform (WCT) to the range-corrected signal (RCS) and to the perpendicular-to-parallel signal ratio (δ) profiles. Different candidates for zPBL are chosen and the selection is done based on the WCT applied to the RCS and δ. We use two ChArMEx (Chemistry-Aerosol Mediterranean Experiment) campaigns with lidar and microwave radiometer (MWR) measurements, conducted in 2012 and 2013, for the POLARIS' adjustment and validation. POLARIS improves the zPBL detection compared to previous methods based on lidar measurements, especially when an aerosol layer is coupled to the PBL. We also compare the zPBL provided by the Weather Research and Forecasting (WRF) numerical weather prediction (NWP) model with respect to the zPBL determined with POLARIS and the MWR under Saharan dust events. WRF underestimates the zPBL during daytime but agrees with the MWR during night-time. The zPBL provided by WRF shows a better temporal evolution compared to the MWR during daytime than during night-time.
A multi-model approach to monitor emissions of CO2 and CO from an urban-industrial complex
Authors: Super Ingrid , Denier van der Gon Hugo A. C. , van der Molen Michiel K. , Sterk Hendrika A. M. , Hensen Arjan , Peters Wouter
Published: June 2017

Abstract. Monitoring urban-industrial emissions is often challenging, because observations are scarce and regional atmospheric transport models are too coarse to represent the high spatiotemporal variability in the resulting concentrations. In this paper we apply a new combination of a Eulerian model (WRF with chemistry) and a Gaussian plume model (OPS). The modelled mixing ratios are compared to observed CO2 and CO mole fractions at four sites along a transect from an urban-industrial complex (Rotterdam, Netherlands) towards rural conditions for October–December 2014. Urban plumes are well-mixed at our semi-urban location, making this location suited for an integrated emission estimate over the whole study area. The signals at our urban measurement site (with average enhancements of 11 ppm CO2 and 40 ppb CO over the baseline) are highly variable due to the presence of distinct source areas dominated by road traffic/residential heating emissions or industrial activities. This causes different emission signatures that are translated into a large variability in observed ΔCO : ΔCO2 ratios, which can be used to identify dominant source types. We find that WRF-Chem is able to represent synoptic variability in CO2 and CO (e.g. the median CO2 mixing ratio is 9.7 ppm (observed) against 8.7 ppm (modelled)) , but it fails to reproduce the hourly variability of daytime urban plumes at the urban site (R2 up to 0.05). For the urban site, a plume model should be added to the model framework to adequately represent plume transport especially from stack emissions. The explained variance in hourly, daytime CO2 enhancements from point source emissions increases from 30 % with WRF-Chem to 52 % with WRF-Chem in combination with the most detailed OPS simulation. The simulated variability in ΔCO : ΔCO2 ratios decreases drastically from 1.5 to 0.6 ppb ppm−1 which agrees better with the observed standard deviation of 0.4 ppb ppm−1. This is partly due to improved wind fields (increase in R2 of 0.10), but also due to improved point source representation (increase in R2 of 0.05) and dilution (increase in R2 of 0.07). Based on our analysis we conclude that a plume model with detailed and accurate dispersion parameters is inevitable for top-down monitoring of greenhouse gas emissions in urban environments with large point source contributions within a ~ 10 km radius from the observation sites.
Fu-Liou Gu radiative transfer model used as proxy to evaluate the impact of data processing and different lidar measurement techniques in view of next and current lidar space missions
Authors: Lolli Simone , Madonna Fabio , Rosoldi Marco , Campbell James R. , Welton Ellsworth J. , Lewis Jasper R. , Gu Yu , Pappalardo Gelsomina
Published: June 2017

Abstract. In view of the actual or future ground-based networks and space missions involving lidar instruments, we evaluated the comparability of extinction coefficient atmospheric profiles directly retrieved or estimated with different lidar techniques, i. e. Raman and elastic lidar, and different data processing/smoothing for a transported upper atmospheric dust layer and for a cirrus cloud case through Fu-Liou-Gu radiative transfer model net forcing calculations, both at surface and at the top-of-the-atmosphere. The results put in evidence discrepancies up to 7 % on net radiative forcing for the case of dust layer case and up to 35 % for the cirrus cloud case. The main objective of this analysis is to quantitatively raise awareness on the inconsistences in calculating a significant climatological variable as the aerosol and cloud net radiative forcing due to the large diversification in lidar data measurements.
Soil microbial biomass, activity and community composition along altitudinal gradients in the High Arctic (Billefjorden, Svalbard)
Authors: Kotas Petr , Šantrůčková Hana , Elster Josef , Kaštovská Eva
Published: June 2017

Abstract. The unique and fragile High Arctic ecosystems are vulnerable to proceeding global climate warming. Elucidation of factors driving microbial distribution and activity in Arctic soils is essential for comprehensive understanding of the ecosystem functioning and its response to environmental change. The goals of this study were to investigate the microbial biomass, activity, microbial community structure (MCS) and its abiotic controls in soils along three elevational gradients in coastal mountains of Billefjorden, Central Svalbard. Soils from four different altitudes (25, 275, 525, and 765 m above sea level) were analysed for a suite of characteristics including temperature regimes, organic matter content, base cation availability, moisture, pH, basal respiration, and microbial biomass and community structure using phospholipid fatty acids (PLFA). We observed significant altitudinal zonation of most edaphic characteristics reflected by soil microbial properties. The microbial biomass and activity normalized per unit of organic carbon significantly increased with elevation. The two dominant microbial groups, fungi and bacteria, had different habitat preferences, resulting in high fungi to bacteria (F / B) ratios at the most elevated sites. The changes in MCS were mainly governed by the bedrock chemistry, soil pH, organic carbon content and soil moisture. While the direct impact of summer soil temperature regimes on soil microbes was likely negligible, it´s influence on plant distribution along the gradients have strong implications for edaphic conditions and consequently also for soil microbes. Our results highlight the need to consider unvegetated high elevation areas as hotspots of microbial activity and important habitats within the High Arctic ecosystem.
Testing and Development of Transfer Functions for Weighing Precipitation Gauges in WMO-SPICE
Authors: Kochendorfer John , Nitu Rodica , Wolff Mareile , Mekis Eva , Rasmussen Roy , Baker Bruce , Earle Michael E. , Reverdin Audrey , Wong Kai , Smith Craig D. , Yang Daqing , Roulet Yves-Alain , Meyers Tilden , Buisan Samuel , Isaksen Ketil , Brækkan Ragnar , Landolt Scott , Jachcik Al
Published: June 2017

Abstract. Adjustments for the undercatch of solid precipitation caused by wind were developed for different weighing gauge/wind shield combinations tested in WMO-SPICE. These include several different manufacturer-provided unshielded and single-Alter shielded weighing gauges, a MRW500 precipitation gauge within a small, manufacturer-provided shield, and host-provided precipitation gauges within double-Alter, Belfort double-Alter, and small Double-Fence Intercomparison Reference (SDFIR) shields. Previously-derived adjustments were also tested on measurements from each weighing gauge/wind shield combination. The transfer functions developed specifically for each of the different types of unshielded and single-Alter shielded weighing gauges did not perform significantly better than the more generic and universal transfer functions developed previously using measurements from eight different WMO-SPICE sites. This indicates that wind shield type (or lack thereof) is more important in determining the magnitude of wind-induced undercatch than the type of weighing precipitation gauge. It also demonstrates the potential for widespread use of the previously-developed, multi-site single-Alter shielded and unshielded transfer functions. In addition, corrections for the lower-porosity Belfort double-Alter shield and a standard double-Alter shield were developed and tested using measurements from two separate sites for the first time. Among all of the manufacturer-provided shields tested, with an average undercatch of about 5 %, the Belfort double Alter shield required the least amount of correction, and caught ~ 80 % of the reference amount of precipitation even in snowy conditions with wind speeds greater than 5 m  s−1. The SDFIR-shielded gauge accumulated 98 % of the Double-Fence Automated Reference (DFAR) precipitation amount on average, accumulated 90 % of the DFAR accumulation in high winds, and was almost indistinguishable from the full-sized DFAR used as a reference. In general, the more effective wind shields, that were associated with smaller unadjusted errors, also produced more accurate measurements after adjustment.
Assessment of hydrokinetic resources of small and medium-size rivers: the Lithuanian case
Authors: Gailiušis Brunonas , Jakimavičius Darius , Šarauskienė Diana , Jurgelėnaitė Aldona
Published: June 2017

The aim of the study is to assess hydrokinetic energy resources of small and medium-size rivers in Lithuania. The estimation of technical resources was carried out for river segments, where for average longterm runoff the flow velocity exceeded 0.4 m/s, and the average depth was more than 0.5 m. The results of hydrological studies were used to calculate the average flow rate and the relationship between flow velocity and river depth. The width and depth of the river channel was estimated in accordance with physical and geographical factors. Part of the favourable for use sites of rivers located within protected areas cannot be used for energy production because of the priority of environmental protection. Navigation, recreation and other factors also limit the use of streams for energy production. In addition, in winter due to ice phenomena, hydrokinetic devices in small and medium rivers should be protected from mechanical obstacles. Moreover, Lithuania is a flat country and available hydrokinetic resources of such plain rivers are very small. Their estimated capacity comprises 13.6 MW, and they can generate 79.4 GWh of electric energy per year.
Heavy metals in sediments of the Gulf of Finland : a review
Authors: Emelyanov Emelyan , Vallius Henry , Kravtsov Victor
Published: June 2017

The Gulf of Finland has during the last centuries been loaded with heavy metals of anthropogenic origin. Work with mapping of the chemistry of the sediments have been done in all surrounding countries during several decades, first in the Soviet Union and later in Russia and similarly in Finland. More recent sediment chemistry data from the last two decades was in this study combined into sediment chemistry maps added with some data from the commercial Nord Stream project. The result shows that zinc, copper and chromium are enriched in the eastern part of the Gulf of Finland, while mercury, cadmium and lead are showing the highest concentrations in the north- eastern part of the gulf.
Analytical characterization of “Indonesian amber” deposits: evidence of formation from volcanic activity
Authors: Kosmoswska-Ceranowicz Barbara , Sachanbiński Michał , Łydżba-Kopczyńska Barbara
Published: June 2017

In this study the new mineralogical and geochemical evidence for the reason behind intensive resin production in trees and the formation of Indonesian resin deposits is presented. The analysed specimens of the “Indonesian amber” were subjected to the following comprehensive investigations: PAS, IR, RS XRD and SEM-EDS. It was found that the resins are originated due to intensive volcanic activity. Based on spectroscopic investigations, “Indonesian amber” was assigned to the glessite group. The investigations revealed that the traces of volcanic activity have survived in the studied specimens in their structure were the presence of tonstein and inorganic minerals are related to volcanic phenomena. “Floating” in opaque solid–foam resin indicated that resinous substance was strongly heated trough volcanic activity.
A ESCRITA COLABORATIVA NA FORMAÇÃO CONTINUADA DE PROFESSORES QUE ENSINAM MATEMÁTICA
Authors: Rodrigues Almeida Alessandra , Bueno Andrade Megid Maria Auxiliadora
Published: June 2017

Neste artigo apresentamos um estudo que objetivou investigar em que medida a escrita coletiva de narrativas contribui na formação de professores participantes de um grupo colaborativo que estuda a matemática na/para infância. A partir da análise narrativa dos textos colaborativos foi possível observar que, no movimento de escrever, ler e editar textos iniciados por um dos participantes do grupo, auxiliando a composição de uma narrativa de autoria coletiva, cada participante coloca em evidência suas aprendizagens e destaca aspectos relevantes para a própria formação. Essa dinâmica também propicia reflexões sobre a prática docente e a (re)significação dos conteúdos matemáticos.
A EDUCAÇÃO PROBLEMATIZADORA DE PAULO FREIRE, UMA PEDAGOGIA DO SUJEITO SOCIAL
Authors: Pitano Sandro De Castro
Published: June 2017

O artigo apresenta os resultados de uma investigação bibliográfica sobre o pensamento de Paulo Freire, considerando a tese de que o mesmo tem o sujeito social como horizonte formativo. Visa identificar e evidenciar, a partir dos escritos freireanos, um conceito de sujeito social afinado com os princípios políticos e pedagógicos da educação popular. A análise bibliográfica abarcou a totalidade dos livros de Freire, dedicando maior atenção às obras: Pedagogia do Oprimido, Conscientização, Pedagogia: Diálogo e Conflito, Política e Educação, Pedagogia da Esperança e Pedagogia da Indignação. Aprofundando o estudo de categorias centrais como conscientização e diálogo, foi possível identificar e caracterizar um conceito de sujeito social na pedagogia freireana, configurando um horizonte formativo em consonância com os fundamentos e ideais da educação popular.
A ESCUTA NA FORMAÇÃO INICIAL DE PROFESSORES DE CIÊNCIAS – UM OLHAR PARA EJA
Authors: Martins dos Santos Sayonara , Sendin Moreira Guimarães Simone
Published: June 2017

O presente trabalho se configura como recorte de uma pesquisa de mestrado, realizada no curso de licenciatura em Ciências Biológicas – noturno da Universidade Federal de Goiás. A pesquisa geral teve como objetivo compreender os limites e possibilidades do diálogo como estratégia na formação de professores de biologia para atuar na EJA. Nesse recorte objetivamos contemplar o objetivo específico de acompanhar a realização da disciplina de estágio, observando o diálogo como possibilidade de estratégia, com enfoque na categoria saber escutar. Os dados coletados foram transcritos e analisados a partir da análise textual discursiva. Consideramos que a inserção do diálogo como estratégia na formação inicial permite um afastamento do modelo educacional bancário presente na formação de professores.
MATRIZ DE HABILIDADES E COMPETÊNCIAS PARA FORMAÇÃO DO NUTRICIONISTA COMO INSTRUMENTO DE AVALIAÇÃO DO PROJETO POLÍTICO PEDAGÓGICO DO CURSO DE NUTRIÇÃO/UFG
Authors: Mendonça Guimarães Marilia , Ferreira Stringhini Maria Luiza , Maria de Sousa Lucilene , Helena Carvalho Francescantônio Menezes Ida , Vaz de Souza Freitas Ana Tereza , Helena Sacchi Correia Márcia , Sugai Andrea , Roberto Bollela Valdes , De Morais Borges Marques Rosana
Published: June 2017

Este trabalho apresenta um relato de experiência iniciada em 2015 sobre o processo de autoavaliação do Projeto Pedagógico do Curso de Nutrição da Universidade Federal de Goiás. Para isso, o núcleo docente estruturante (NDE) do curso propôs três eixos de investigação: metodologias de ensino e aprendizagem; estratégias de avaliação do estudante utilizadas nas disciplinas e o grau de alinhamento da proposta curricular existente quando comparada com a preconizada pelas diretrizes curriculares nacionais (DCN) e políticas indutoras da formação de recursos humanos para a saúde, no Brasil. O presente relato concentra-se no terceiro eixo da avaliação que resultou na criação de uma matriz de habilidades e competências para o nutricionista ao final da graduação, que teve como referencial o Consenso de Habilidades/Competências do nutricionista no âmbito da saúde coletiva, proposto nacionalmente. O produto final (a matriz propriamente dita) é o resultado de várias discussões realizadas pelos docentes do curso sobre aquilo que se espera que o estudante adquira em termos de habilidades cognitivas, psicomotoras e atitudinais durante a sua formação, que o prepare para atuar como nutricionista.
SALA DE AULA INVERTIDA NA EDUCAÇÃO PARA AS PROFISSÕES DE SAÚDE: CONCEITOS ESSENCIAIS PARA A PRÁTICA
Authors: Bollela Valdes Roberto
Published: June 2017

As diretrizes curriculares dos cursos de graduação da área da saúde recomendam a utilização de estratégias de ensino e aprendizagem centradas no estudante, colaborativas e que valorizem o reconhecimento e a resolução de problemas relevantes e relacionados à prática profissional. O objetivo deste artigo é descrever os aspectos essenciais sobre a “sala de aula invertida”, com intuito de auxiliar aqueles que tiverem interesse de utilizá-la. Trata-se de breve revisão sobre uma estratégia educacional que tem sido utilizado cada vez mais no ensino superior, em especial nos cursos de graduação da área da saúde. Os autores apresentam uma breve revisão sobre as origens, caracterizando e descrevendo como funciona a sala de aula invertida, além de discutir algumas razões para que o professor considere utilizá-la no ensino de graduação dos cursos da área da saúde. Finalmente, são apresentadas as limitações e os desafios da estratégia. A proposta da sala de aula invertida entrelaça diversos conceitos, dentre eles o da aprendizagem ativa e colaborativa, da autonomia do estudante, da aprendizagem significativa e do ensino à distância.
Adesão ao tratamento de pessoas com úlceras venosas atendidas na atenção primária à saúde
Authors: Liberato Samily Márjore Dantas , Araújo Rhayssa de Oliveira e , Souza Amanda Jéssica Gomes de , Pergola-Marconato Aline Maino , Costa Isabelle Katherinne Fernandes , Torres Gilson de Vasconcelos
Published: June 2017

Objetivo: la adherencia al tratamiento de personas con úlceras venosas (UV) y su asociación con las características sociodemográficas, de salud y asistenciales. Materiales y métodos: se trata de un estudio analítico, transversal, realizado con 101 personas con UV. Se emplearon dos instrumentos: un cuestionario para caracterizar los aspectos sociodemográficos, de salud y de asistencia, y la Escala Multidimensional de Adherencia Terapéutica. Resultados: se halló peor adherencia al tratamiento en la dimensión terapia compresiva. Se identificó asociación entre el dominio estilo de vida saludable y estado civil, y entre el dominio vigilancia neurovascular y rango de edades, estado civil, profesión y etilismo. Se encontraron asociaciones entre las dimensiones de adherencia y las características de asistencia: adherencia a terapia comprensiva, orientación para uso de terapia compresiva y orientación para ejercicios regulares y quien realiza la curación fuera de las unidades. Conclusiones: hay mayor dificultad de adherencia al tratamiento en cuanto a terapia compresiva; la asistencia prestada está asociada a la adherencia a terapia compresiva, a orientación para uso de terapia compresiva y a orientación para ejercicios regulares.
Fatores associados ao diagnóstico risco de volume de líquidos deficiente em pacientes em hemodiálise
Authors: Diniz Leite Érida Maria , Costa Andriola Isadora , Dias Fernandes Maria Isabel da Conceição , Rangel Dantas Juliane , Dantas de Sá Tinôco Jéssica , Brandão de Carvalho Lira Ana Luisa
Published: June 2017

Objetivo: verificar la asociación entre las características socioeconómicas y clínicas y los factores asociados al diagnóstico Riesgo de volumen de líquidos deficiente en pacientes en hemodiálisis. Materiales y método: estudio transversal, realizado en una unidad de diálisis de una clínica universitaria en el noreste de Brasil, con 50 pacientes, por medio de entrevistas y examen físico. Para análisis de los datos, se empleó la prueba U Mann-Whitney. Resultados: se verificaron las siguientes asociaciones significativas: deficiencia de conocimiento y tiempo de hemodiálisis (p=0,037); extremos de peso y renta familiar (p=0,040); extremos de peso y volumen de ultrafiltración (p=0,010), y pérdida de líquidos por vías anormales y volumen de ultrafiltración (p=0,000). Conclusiones: se identificaron asociaciones entre los factores asociados del diagnóstico de enfermería Riesgo de volumen de líquidos deficiente y las características socioeconómicas y clínicas presentes en los pacientes sometidos al tratamiento hemodialítico. Así, se encontró que los factores asociados de tal diagnóstico pueden sufrir influencias de características socioeconómicas y clínicas.
Qualidade da assistência de enfermagem em medicina diagnóstica: construção e validação de um instrumento
Authors: Alcântara Garzin Ana Claudia , Melleiro Marta Maria
Published: June 2017

Objetivos: construir y validar un instrumento de recolección de datos acerca de la calidad de la asistencia de enfermería en servicios de medicina diagnóstica. Materiales y método: la construcción del instrumento se basó en las etapas teóricas descriptas por Pasquali, y el proceso de validación ocurrió en dos momentos: análisis de contenido, realizada por nueve jueces, y análisis de consistencia interna, que utilizó el alpha de Cronbach en los datos obtenidos tras la aplicación del instrumento a 203 profesionales del personal de enfermería de una institución privada de medicina diagnóstica. Resultados: las 45 proposiciones evaluadas por los jueces alcanzaron niveles satisfactorios relacionados a relevancia, pertinencia, claridad y sensibilidad, lo que demuestra contenido adecuado al objeto del estudio. El alpha de Cronbach obtuvo puntaje de 0,90, lo que caracteriza un buen nivel de consistencia interna. Conclusiones: el instrumento validado brindará subsidios para intervención y organización de los procesos de trabajo asistenciales y gerenciales en este segmento de actuación de la enfermería.
Formação em enfermagem e o mundo do trabalho: percepções de egressos de enfermagem
Authors: Souza Norma Valéria Dantas de Oliveira , Pires Ariane da Silva , Gonçalves Francisco Gleidson de Azevedo , Tavares Kelly Fernanda Assis , Baptista Ana Terra Porciúncula , Bastos Thamiris Marinho Gollo
Published: June 2017

Objetivos: describir y analizar la percepción de egresados de pegrado en enfermería acerca del proceso de formación y el mundo laboral en salud y enfermería. Materiales y método: investigación cualitativa, descriptiva y exploratoria, desarrollada en la Facultad de Enfermería de la Universidade do Estado do Rio de Janeiro (Brasil). Treinta egresados participaron en la investigación. La recolección de datos se realizó por medio de entrevista semiestruturada. Se analizaron los datos con base en el análisis temático de contenido. Resultados: a partir del análisis, surgió la siguiente categoría empírica: dinamicidad y complejidad del mundo laboral y formación: la óptica del egresado de enfermería. Tal categoría arrojó dos subcategorías denominadas: características del mundo laboral contemporáneo y factores relacionados con la profesión de enfermería que interfieren en el trabajo del enfermero. Conclusiones: los participantes presentan un punto de vista crítico y una visión macroestructural acerca del mundo laboral contemporáneo aproximada a la discusión de sociólogos y estudiosos del trabajo. En cuanto a la profesión, los participantes resaltan el poco reconocimiento profesional y el desprestigio social de la enfermería, asimismo entienden que esta situación está asociada con cuestiones histórica, cultural, religiosa, económica y política.
Social Media Usage in e-Government: Evidence from Suriname
Authors: Samijadi Muhammad Firdaus
Published: June 2017

Social Media has made its’ way of playing an important role in e-Government implementation strategies. Many governments include social media as a tool to approach and engage its’ citizens, to increase transparency, trust and online participation. Although social media is not yet fully understood by governments on how to effectively utilize social media as a tool to be beneficial to the government and the general public. This research focuses on the Social Media activity of the Government Departments of Suriname. With around 1.9 billion active users, Facebook is one of the largest social media platforms in the world. This study furthers analyzes how active social media accounts are being used by the departments and how online users respond to departmental online activities. In order to achieve the goal of this paper, the 14 social media accounts of Suriname government departments will be taken as a case study. Several accounts indicate that government to citizen engagement show much potential for citizens’ active online participation. While the use of social media in e-Government initiatives is a feasible approach to successful implementation, there are still some improvement governments should take into consideration to increase online participation and fulfilling the needs of their citizens.
Mortalidad del ganado vacuno ocasionada por el consumo de plantas tóxicas
Authors: Vallejos Carlos , Tapia Donald
Published: June 2017

León Nicaragua El estudio de las plantas tóxicas y sus efectos en la mortalidad del ganado vacuno es de gran importancia para el sector agropecuario de nuestro país. El presente trabajo es el inicio de un proyecto que tiene como objetivos principales clasificar taxonómicamente las plantas tóxicas y determinar por métodos experimentales la estructura química de su principio activo. Los resultados de este trabajo se pretenden editar en un manual práctico que le sirva al ganadero como material de consulta. En esta iniciativa se debe involucrar a instituciones, organismos y personas del país dedicadas a la producción de ganado vacuno como el MARENA, INTA, MAGFOR, la Asociación de ganaderos del país y los editores de la Revista Pecuaria, a fin de lograr una colaboración que permita el intercambio de experiencias.
Uso de marcadores RAPDs (Random Amplified Polymorphic DNA) para evaluar la variabilidad genética en 7 cultivos de Jatropha curcas L
Authors: Williams Luis H Alberto , Ramos Eleazar , Callejas Lourdes
Published: June 2017

En este estudio se aplicó la técnica molecular RAPD para evaluar la variabilidad existente a nivel de genoma en una colección de plantas de Jatropha curcas L. correspondiente a 7 cultivares. El ADN de cada planta fue extraído por el método Móller y luego amplificado al azar con diferentes primers para identificar polimorfismos los cuales fueron usados como marcadores genéticos (Marcadores RAPDs). Los IO primers usados generaron un total de 54 marcadores, de los cuales 12 establecieron diferencias entre cultivares. El dendograma obtenido de los análisis de agrupamiento según distancias genéticas reveló poca variación en los 6 cultivares importados y un alto grado de variabilidad genética en el caso del cultivar "Nicaragua".
Optimización de la técnica Reacción de Polimerasa en Cadena para el diagnóstico simultáneo de Chlamydia trachomatis y Neisseria gonorrhoeae en el Centro Nacional de Diagnóstico y Referencia en Managua, Nicaragua
Authors: Ernesto Flores Wendy
Published: June 2017

Reportamos la implementación de la técnica Reacción en Cadena de la Polimerasa (PCR) múltiple para detectar simultamemente Chlamydia trachomatis y Neisseria gonorrhoeae, en muestras de exudados vaginales de mujeres trabajadoras del sexo de la ciudad de Managua. Evaluamos la PCR simultánea con la PCR por separado para estos patógenos y comparamos diferentes métodos de diagnóstico con la PCR y evaluamos su validez.
Gimnospermas, parásitas, rastreras y saprófitas de la Reserva Biológica Indio-Maíz, Río San Juan, Nicaragua.
Authors: Flores Franklin
Published: June 2017

Se presenta un estudio sobre plantas gimnospermas, rastreras, parásitas y saprofitas de la reserva biológica Indio-Maiz de RIO San Juan, Nicaragua. Se reportan 14 familias de estos grupos, dentrode las cuales hay 22 géneros y 27 especies. Estas familias se distribuyeron en ocho rastreras, tres parásitas, dos gimnospermas y una saprófita. Consideramos que este trabajo contribuirá al conocimiento de la diversidad biológica del pais y servirá al desarrollo del país, así como del área de estudio y la región estudiada.