bluuebunny/crossref_metadata_2025 huggingface dataset:
Green Technology for Surface Treatments of Aluminium Foil for Flexible Packaging
Authors: Sinagra Ciro , Bravaccino Francesco , Bitondo Ciro , Bossio Antonio , Monetta Tullio , Mitton Donald Bryce , Bellucci Francesco
Published: September 2016

In the flexible food packaging industry, producers of laminated aluminium predominantly use a "rinse" technology for surface treatments characterized by very bulky machinery. The Laminazione Sottile Group togehther with the University of Naples Federico II and the gscsg have developed and characterized a new, extremely simplified, process that provides a "no rinse" treatment on aluminium alloy AA8079Y. In addition, this treatment is chromium free, because chromium has been replaced by zirconium salts. The characteristics of resistance have been verified by using Electrochemical Impedance Spectroscopy (EIS) and cathodic delamination tests. Results obtained show that the "no rinse" treatment with zirconium salts produces an effective protective effect.
Use of Aluminium Structures in the Offshore Industry
Authors: Lundberg Steinar
Published: September 2016

The paper deals with the applications of aluminium alloys in the main structures used in the Offshore Industry. The reasons why aluminium and its alloys are the suitable materials for this kind of applications are clearly identified. After mentioning the appropriate standards and design rules, some important examples, like helicopter decks, gangways and living quarters, are illustrated in details. An overview on the typical connecting systems of aluminium alloys commonly used for the offshore technology is presented.
Numerical Analysis of Aluminium Perforated Shear Panels
Authors: Brando Giuseppe , De Matteis Gianfranco
Published: September 2016

Metal perforated shear plates have been proposed in the last recent years as a suitable solution for passive protection of buildings in seismic-prone zones. The use of soft aluminum alloys seems to be particularly convenient for these special devices. In fact, on the one hand, the low yield strength of the base material allows to control more easily the structural performance without the necessity of large weakening of the base plate. On the other hand, the high ductility that some annealed alloys are able to provide allows significant inelastic deformations, this leading to an appreciable dissipative behavior of the device. In this paper a parametric numerical analysis on pure aluminum perforated shear panels is presented with the aim of examining the panel responses for several arrangements of perforations for different shear deformation demands. In particular, the influence of geometrical parameters related to the hole configuration is investigated.
Evaluation of Rotation Capacity of RHS Aluminium Alloy Beams by FEM Simulation: Temper T6
Authors: Castaldo Paolo , Nastri Elide , Piluso Vincenzo
Published: September 2016

The aim of this work is the numerical assessment of the ultimate behaviour of aluminium alloy beams subjected to non-uniform bending. An extensive numerical analysis has been performed by means of FE code ABAQUS with reference to RHS sections considering different values of the main geometrical and mechanical parameters. In particular, regarding the geometrical parameters the flange slenderness, the flange-to-web slenderness ratio and the moment gradient parameter have been considered. In particular, their influence on the ultimate behaviour of such beams has been investigated by adopting the material constitutive law proposed by Eurocode 9 based on the Ramberg-Osgood model. The investigations concern these parameters considered separately as well as their interaction. The results are herein reported with reference to temper T6 and show the importance of the investigated parameters on the buckling strength and the rotational capacity of aluminium alloy beams. Temper T6 gives rise to a quite low hardening compared to temper T4, which is analysed in a companion paper.
A Simple Method for the Design of Aluminium Structures
Authors: Höglund Torsten
Published: September 2016

Deflections at the serviceability limit state are often decisive in the design of aluminium structures due to the low elastic modulus. Where design is based on deflections, it may not be necessary to calculate the resistance exactly and simple conservative methods are sufficient. The proposed method may be used to generate a quick, approximate and safe solution, perhaps for the purpose of initial member sizing, with the opportunity to refine the calculation for final design. Another reason for the simple method is enhancing ease of use of Eurocode 9.The principal of the proposed method is to eliminate calculation of effective cross-sections by reducing the elastic resistance with the reduction factor for the most slender part of the cross-section or the factor for HAZ softening whichever is less. This means that you don’t need to define the cross-section class. The disadvantage is that you don’t utilize the plastic reserve for class 1 and 2 cross-sections, nor the redistribution of stresses in the post-buckling range of class 4 cross-sections or sections with HAZ. The procedure is similar to the method with permissible stresses familiar to most engineers.
Aluminium in Modular Structures for Offshore Lifts
Authors: Ntaskagianni Vasiliki
Published: September 2016

Offshore lifts can be performed by platform cranes, crane vessels, helicopters or modular structures. The challenge of an offshore lift lies in performing it in inaccessible locations on the platform and minimizing the cost and the offshore time. Platform cranes often cannot reach the lifting object, and crane vessels and helicopters provide solutions which increase the operation costs. On the contrary, aluminium modular structures provide solutions which can make a challenging lift efficient and successful without incurring high costs.
EC9 Second Generation: Proposal for New Imperfection Factors for Unstiffened Aluminium Shells
Authors: Mazzolani Federico M. , Höglund Torsten , Mandara Alberto
Published: September 2016

The paper summarizes a part of the activity currently carried out by the CEN/TC250 SC9 Committee, which is presently engaged in setting up the “Second Generation” of EC9 on aluminium structures. In particular, new expressions of imperfection reductions factors α for unstiffened shells are proposed. The new formulation, which is calibrated on the basis of simulation buckling data available in literature, corrects a small issue of the previous one, giving at the same time more reliable and consistent results.
Characterization of Innovative Al-Si-Mg-Based Alloys for High Temperature Applications
Authors: Gariboldi Elisabetta , Colombo Marco
Published: September 2016

The role played by transition elements and rare earths, added in small quantities (fractions of unity in weight percent) was proved by several authors to be beneficial for the age-hardening response and for the microstructural stability at high temperature of Al-based alloys. The paper illustrates the results of an experimental investigation on the effects of erbium (Er) additions on the microstructural features, microstructural stability and mechanical properties of an Al-7Si-0.4Mg alloy of wide industrial use. The effects are multifold: in the cast microstructure, a silicon (Si) eutectic modification was observed with the formation of several Er-containing intermetallic phases. After solution treatment and aging, an increase in peak hardness and an enhanced microstructural stability were obtained. In this preliminary study, the beneficial effects of Er additions were confirmed.
Design of Functionally Graded Beam of Aluminium Foam for Civil Structural Application
Authors: Perrella Gianpaolo , Faiella Diana , Brandonisio Giuseppe , Fraldi Massimiliano , Mele Elena
Published: September 2016

Sandwich foam beams, made of solid skins and aluminium foam core, are usually applied in high-tech engineering field while they are not yet adopted in civil structures. An initial, explorative study on the structural application of metal foam is presented in this paper. The potentials of sandwich foam beams are studied through analytical models and parametric analyses; the sensitivity of the flexural response of the media to the total amount of pores and their spatial distribution are investigated. An analytical tool able to design functionally graded beams of metallic foam is presented and applied with reference some commercial aluminium foams. An experimental campaign is being planned to validate the presented results.
Properties of Aluminium Alloys Produced by Selective Laser Melting
Authors: Bassani Paola , Biffi Carlo Alberto , Casati Riccardo , Zanatta Alarcon Adrianni , Tuissi Ausonio , Vedani Maurizio
Published: September 2016

Analysis of peculiar properties offered by Al alloys produced according to additive manufacturing techniques, specifically by Selective Laser Melting (SLM), is carried out.
Two alloys are considered, derived by casting (AlSi10Mg) and by wrought (ENAW 2618) applications. The SLM processed samples are investigated considering their microstructural and mechanical properties after SLM and compared to cast and wrought counterparts.
A strong microstructural refinement induced by SLM processing is observed for both alloys, resulting in excellent hardness properties. Investigation on integrity of samples revealed that small-size microvoids and unmelted regions could be present in SLM parts.
A Numerical Study on the Pull-Out Strengths of Anchor Bolts Embedded in Concrete Using the Smoothed Particle Hydrodynamics Method
Authors: Sonoda Yoshimi
Published: September 2016

The strength of an anchor bolt in concrete structure under pull-out load is usually designed by three possible failure modes such as fracture of anchor bolt, cone failure of concrete and bond failure between anchor bolt and concrete. In general, the design load is considered the smallest load corresponding to the aforementioned failure mechanisms. However, unexpected failure often occurs in the anchorage zone due to the complex failure or the change of failure condition. Therefore, it is important to develop the accurate analysis method of ultimate load bearing capacity of the anchor bolt. In this study, we conducted an analytical study using Adaptive Smoothed Particle Hydrodynamics (ASPH) in order to simulate the failure process of anchorage zone and discussed the effect of embedment depth of anchor bolts on their ultimate strength.
Evaluation of the Mechanical Properties of Self-Compacting Lightweight Concrete Exposed to Wet and Dry Cycles in Saltwater
Authors: Yehia Sherif , Farrag Sharef
Published: September 2016

In this paper, properties of a self-compacting lightweight concrete that has been exposed to cycles of wetting in saltwater and drying in air are investigated. Such exposure conditions are common in marine structures with pronounced sea level variation. The experimental program consisted of two phases; Phase I included monitoring of the strength development for 28 days, while in Phase II samples were exposed to wet/dry cycles for 12 months. In addition, control samples were kept in room temperature without exposure for comparison. Compressive and flexural strength, modulus of elasticity and Rapid Chloride Penetration (RCP) were included in the investigation. In addition, Scanning Electron Microscopy (SEM) was conducted to examine the microstructure of the samples in phase II. Results from the experimental program indicate that there was a negligible effect on the mechanical properties or RCP due to the exposure conditions. However, a close inspection of the SEM images showed salt deposits and micro cracking in the cement paste. This may affect the long-term durability and can lead to deterioration of the concrete structure, hence reducing the structure’s service life.
Durability of Ordinary Concrete after Heating at High Temperature
Authors: Carré Hélène , Perlot Céline , Daoud Atef , Miah Md Jihad , Aidi Bassem
Published: September 2016

After a fire, the concrete structures are usually repaired. This repair requires a diagnosis so as to know the areas to be preserved and the areas to be demolished. In this analysis, the load-bearing capacity is often the primary endpoint. However, the question of the durability of the structure must also be asked.
This experimental study aims to assess the durability of one ordinary concretes after heating at high temperature (up to 600 °C). The ordinary concrete have a compressive strength at 28 days of about 40 MPa.
Five characteristics were determined for each target temperature (20, 120, 250, 400 and 600 °C): the compressive strength, the water porosity, the nitrogen permeability, the pore distribution by mercury porosimetry and the absorption coefficient. The evolution of the characteristics with temperature are evaluated. Their evolution with compressive strength is analysed and durability index are detailed.
The results show that some correlation exist between the characteristics in particular between nitrogen permeability and water porosity. The evolution of durability index shows that the compressive strength is not sufficient to evaluate the durability of concrete after heating.
Deterioration of Concrete Immersed in Sulfuric Acid for a Long Term
Authors: Tsubone Keisuke , Yamaguchi Yoshiki , Ogawa Yuko , Kawai Kenji
Published: September 2016

Deterioration of concrete caused by sulfuric acid attacks in sewage and waste water treatment plants has been investigated. To evaluate this type of deterioration, concrete specimens immersed in sulfuric acid solutions are usually examined, and the mass loss and erosion depth of the specimens can be used as physical indicators of the degree of the deterioration, while the sulfate ion penetration can be used as a chemical indicator. Although an actual deterioration is progressing with time, most of previous experimental studies were carried out for a comparatively short time. There is a possibility, therefore, that the deterioration in practice has not been estimated completely yet based on the above indicators.
The present study aims at investigating the changes in pore structures and chemical compositions of concrete specimens to evaluate long-term deterioration experimentally. Concrete specimens in which a part of cement was replaced with blast furnace slag, fly ash and silica fume were immersed in sulfuric acid solutions at 0.09 mol/L and 0.006 mol/L for around 1500 days. Pore structures in concrete were investigated to understand the relationship between the erosion depth and the internal space available for expansion due to gypsum production. In addition, chemical compositions of mortar in concrete were analyzed to know the effects of mineral admixture on the resistance to the deterioration.
Environmental Impact due to Repairs by Surface Treatment on Concrete Structures Exposed to Chloride Environment
Authors: Petcherdchoo Aruz , Ongsopapong Chotima
Published: September 2016

This paper presents the environmental impact in terms of CO2 and service life extension due to repairs by surface treatment on concrete structures exposed to time-dependent chloride attack. The service life extension is defined as the difference between the corrosion-free service life of concrete before and after surface treatment by silanes. The corrosion-free service life is predicted based on considering the mechanism of chloride diffusion which can be described using the partial differential equation (PDE) of the Fick’s second law. With the surface treatment, solving the PDE is complicated due to non-constant diffusion coefficient. Furthermore, if the diffusion coefficient is time-dependent, it is even more complicated to solve the PDE. Therefore, numerical computation by the Crank-Nicolson based finite difference method is introduced as a computational tool. From computation, the chloride profiles before and after different surface treatment strategies can be calculated considering time-dependent chloride attack. Furthermore, the environmental impact in terms of CO2 due to surface treatment is also presented. Finally, numerical examples to calculate the service life extension after surface treatments and the environmental impacts are compared.
Printability of Magnesium Potassium Phosphate Cement with Different Mixing Proportion for Repairing Concrete Structures in Severe Environment
Authors: Fu Yu Chen , Cao Xiang Peng , Li Zongjin
Published: September 2016

It is well acknowledged that the of design concrete structures in the severe conditions such as marine environment has more challenges compared with those constructed in normal circumstances. The demand of fast repairing type materials and its utilization has becoming increasingly significant due to the less durability of the concrete under serious service conditions. The combination of rapid hardening cement with 3D printing technology expands a new area of producing repairing materials in severe environment because 3D printing technology has its unique advantages of producing structural members without casting and assembling. The main purpose of the paper is to examine the printability of Magnesium Potassium Phosphate Cement (MKPC) which as a fast repairing material contributed to maintain the concrete structures in any serious environment. By analysing printed specimens produced by different mixing proportion of MKPC powder, an optimal formulation of suitable combination of the MKPC powder was suggested to improve the printability of the applied materials. Furthermore, Water drop penetration behaviour and different particle size of MKPC powder would also influence the degree reaction between KDP and MgO. Finally, a broad of droplet tests were carried out to obtain an optimized printing nozzle with the inner diameter of 0.06mm which could produce one printable layer with width of 0.9mm.
Spinal-Exercise Prescription in Sport: Classifying Physical Training and Rehabilitation by Intention and Outcome
Authors: Spencer Simon , Wolf Alex , Rushton Alison
Published: September 2016

Context:

Identification of strategies to prevent spinal injury, optimize rehabilitation, and enhance performance is a priority for practitioners. Different exercises produce different effects on neuromuscular performance. Clarity of the purpose of a prescribed exercise is central to a successful outcome. Spinal exercises need to be classified according to the objective of the exercise and planned physical outcome.

Objective:

To define the modifiable spinal abilities that underpin optimal function during skilled athletic performance, clarify the effect of spinal pain and pathologic conditions, and classify spinal exercises according to the objective of the exercise and intended physical outcomes to inform training and rehabilitation.

Design:

Qualitative study.

Data Collection and Analysis:

We conducted a qualitative consensus method of 4 iterative phases. An exploratory panel carried out an extended review of the English-language literature using CINAHL, EMBASE, MEDLINE, and PubMed to identify key themes and subthemes to inform the definitions of exercise categories, physical abilities, and physical outcomes. An expert project group reviewed panel findings. A draft classification was discussed with physiotherapists (n = 49) and international experts. Lead physiotherapy and strength and conditioning teams (n = 17) reviewed a revised classification. Consensus was defined as unanimous agreement.

Results:

After the literature review and subsequent analysis, we defined spinal abilities in 4 categories: mobility, motor control, work capacity, and strength. Exercises were subclassified by functionality as nonfunctional or functional and by spinal displacement as either static (neutral spinal posture with no segmental displacement) or dynamic (dynamic segmental movement). The proposed terminology and classification support commonality of language for practitioners.

Conclusions:

The spinal-exercise classification will support clinical reasoning through a framework of spinal-exercise objectives that clearly define the nature of the exercise prescription required to deliver intended physical outcomes.
Molecular composition of organic aerosols in central Amazonia: an
ultra-high-resolution mass spectrometry study
Authors: Kourtchev Ivan , Godoi Ricardo H. M. , Connors Sarah , Levine James G. , Archibald Alex T. , Godoi Ana F. L. , Paralovo Sarah L. , Barbosa Cybelli G. G. , Souza Rodrigo A. F. , Manzi Antonio O. , Seco Roger , Sjostedt Steve , Park Jeong-Hoo , Guenther Alex , Kim Saewung , Smith James , Martin Scot T. , Kalberer Markus
Published: September 2016

Abstract. The Amazon Basin plays key role in atmospheric chemistry, biodiversity and climate change. In this study we applied nanoelectrospray (nanoESI) ultra-high-resolution mass spectrometry (UHRMS) for the analysis of the organic fraction of PM2.5 aerosol samples collected during dry and wet seasons at a site in central Amazonia receiving background air masses, biomass burning and urban pollution. Comprehensive mass spectral data evaluation methods (e.g. Kendrick mass defect, Van Krevelen diagrams, carbon oxidation state and aromaticity equivalent) were used to identify compound classes and mass distributions of the detected species. Nitrogen- and/or sulfur-containing organic species contributed up to 60 % of the total identified number of formulae. A large number of molecular formulae in organic aerosol (OA) were attributed to later-generation nitrogen- and sulfur-containing oxidation products, suggesting that OA composition is affected by biomass burning and other, potentially anthropogenic, sources. Isoprene-derived organosulfate (IEPOX-OS) was found to be the most dominant ion in most of the analysed samples and strongly followed the concentration trends of the gas-phase anthropogenic tracers confirming its mixed anthropogenic–biogenic origin. The presence of oxidised aromatic and nitro-aromatic compounds in the samples suggested a strong influence from biomass burning especially during the dry period. Aerosol samples from the dry period and under enhanced biomass burning conditions contained a large number of molecules with high carbon oxidation state and an increased number of aromatic compounds compared to that from the wet period. The results of this work demonstrate that the studied site is influenced not only by biogenic emissions from the forest but also by biomass burning and potentially other anthropogenic emissions from the neighbouring urban environments.
Anaerobic oxidation of methane alters sediment records of sulfur, iron and
phosphorus in the Black Sea
Authors: Egger Matthias , Kraal Peter , Jilbert Tom , Sulu-Gambari Fatimah , Sapart Célia J. , Röckmann Thomas , Slomp Caroline P.
Published: September 2016

Abstract. The surface sediments in the Black Sea are underlain by extensive deposits of iron (Fe)-oxide-rich lake sediments that were deposited prior to the inflow of marine Mediterranean Sea waters ca. 9000 years ago. The subsequent downward diffusion of marine sulfate into the methane-bearing lake sediments has led to a multitude of diagenetic reactions in the sulfate-methane transition zone (SMTZ), including anaerobic oxidation of methane (AOM) with sulfate. While the sedimentary cycles of sulfur (S), methane and Fe in the SMTZ have been extensively studied, relatively little is known about the diagenetic alterations of the sediment record occurring below the SMTZ.Here we combine detailed geochemical analyses of the sediment and porewater with multicomponent diagenetic modeling to study the diagenetic alterations below the SMTZ at two sites in the western Black Sea. We focus on the dynamics of Fe, S and phosphorus (P), and demonstrate that diagenesis has strongly overprinted the sedimentary burial records of these elements. In line with previous studies in the Black Sea, we show that sulfate-mediated AOM substantially enhances the downward diffusive flux of sulfide into the deep limnic deposits. During this downward sulfidization, Fe oxides, Fe carbonates and Fe phosphates (e.g., vivianite) are converted to sulfide phases, leading to an enrichment in solid-phase S and the release of phosphate to the porewater. Below the sulfidization front, high concentrations of dissolved ferrous Fe (Fe2+) lead to sequestration of downward-diffusing phosphate as authigenic vivianite, resulting in a transient accumulation of total P directly below the sulfidization front.Our model results further demonstrate that downward-migrating sulfide becomes partly re-oxidized to sulfate due to reactions with oxidized Fe minerals, fueling a cryptic S cycle and thus stimulating slow rates of sulfate-driven AOM ( ∼  1–100 pmol cm−3 d−1) in the sulfate-depleted limnic deposits. However, this process is unlikely to explain the observed release of dissolved Fe2+ below the SMTZ. Instead, we suggest that besides organoclastic Fe oxide reduction and reactivation of less reactive Fe oxides by methanogens, AOM coupled to the reduction of Fe oxides may also provide a possible mechanism for the high concentrations of Fe2+ in the porewater at depth. Our results reveal that methane plays a key role in the diagenetic alterations of Fe, S and P records in Black Sea sediments. The downward sulfidization into the limnic deposits is enhanced through sulfate-driven AOM with sulfate, and AOM with Fe oxides may provide a deep source of dissolved Fe2+ that drives the sequestration of P in vivianite below the sulfidization front.
The CMIP6 Sea-Ice Model Intercomparison Project (SIMIP): understanding sea ice through climate-model simulations
Authors: Notz Dirk , Jahn Alexandra , Holland Marika , Hunke Elizabeth , Massonnet François , Stroeve Julienne , Tremblay Bruno , Vancoppenolle Martin
Published: September 2016

Abstract. A better understanding of the role of sea ice for the changing climate of our planet is the central aim of the diagnostic Coupled Model Intercomparison Project 6 (CMIP6)-endorsed Sea-Ice Model Intercomparison Project (SIMIP). To reach this aim, SIMIP requests sea-ice-related variables from climate-model simulations that allow for a better understanding and, ultimately, improvement of biases and errors in sea-ice simulations with large-scale climate models. This then allows us to better understand to what degree CMIP6 model simulations relate to reality, thus improving our confidence in answering sea-ice-related questions based on these simulations. Furthermore, the SIMIP protocol provides a standard for sea-ice model output that will streamline and hence simplify the analysis of the simulated sea-ice evolution in research projects independent of CMIP. To reach its aims, SIMIP provides a structured list of model output that allows for an examination of the three main budgets that govern the evolution of sea ice, namely the heat budget, the momentum budget, and the mass budget. In this contribution, we explain the aims of SIMIP in more detail and outline how its design allows us to answer some of the most pressing questions that sea ice still poses to the international climate-research community.
InSAR observations of the 2009 Racha earthquake, Georgia
Authors: Nikolaeva Elena , Walter Thomas R.
Published: September 2016

Abstract. Central Georgia is an area strongly affected by earthquake and landslide hazards. On 29 April 1991 a major earthquake (Mw  =  7.0) struck the Racha region in Georgia, followed by aftershocks and significant afterslip. The same region was hit by another major event (Mw  =  6.0) on 7 September 2009. The aim of the study reported here was to utilize interferometric synthetic aperture radar (InSAR) data to improve knowledge about the spatial pattern of deformation due to the 2009 earthquake. There were no actual earthquake observations by InSAR in Georgia. We considered all available SAR data images from different space agencies. However, due to the long wavelength and the frequent acquisitions, only the multi-temporal ALOS L-band SAR data allowed us to produce interferograms spanning the 2009 earthquake. We detected a local uplift around 10 cm (along the line-of-sight propagation) in the interferogram near the earthquake's epicenter, whereas evidence of surface ruptures could not be found in the field along the active thrust fault. We simulated a deformation signal which could be created by the 2009 Racha earthquake on the basis of local seismic records and by using an elastic dislocation model. We compared our modeled fault surface of the September 2009 with the April 1991 Racha earthquake fault surfaces and identify the same fault or a sub-parallel fault of the same system as the origin. The patch that was active in 2009 is just adjacent to the 1991 patch, indicating a possible mainly westward propagation direction, with important implications for future earthquake hazards.
Dialogic education for and from authorial agency
Authors: Matusov Eugene , Smith Mark , Soslau Elizabeth , Marjanovic-Shane Ana , Von Duyke Katherine
Published: September 2016

In this paper, we extend Bakhtin's ethical philosophical ideas to education and introduce a dialogic authorial agency espoused approach. We then consider this approach in opposition to the mainstream technological espoused approach, while focusing our contrasting analysis on student’s authorial agency and critical dialogue. We argue that the technological approach assumes that the "skills" or "knowledge" are garnered in pursuit of preset curricular endpoints (i.e., curricular standards). Since the goals of the technological approach are divorced from the students’ personal goals, values, and interests, they are incompatible and irreconcilable with what we idealize as the true goal of education, education for agency. The authorial agency approach to education (Dialogic Education For and From Authorial Agency) emphasizes the unpredictable, improvisational, eventful, dialogic, personal, relational, transcending, and ontological nature of education. The authorial agency of the student and of the teacher are valued and recognized by all participants as the primary goal of education – supported by the school system and broader society.  The approach defines education as a learner’s leisurely pursuit of critical examination of the self, the life, and the world in critical dialogue. The purpose of authorial agency pedagogy is to facilitate this process by promoting students’ agency and unique critical voices in socially desired practices – critical voices, recognized by the students themselves and others relevant to the particular practice(s). Ultimately, in the authorial education for and from authorial agency, students are led into investigating and testing their ideas and desires, assuming new responsibilities and developing new questions and concerns.            Finally, we describe and analyze the first author’s partially successful and partially failing attempt to enact a dialogic authorial approach. It will allow the reader to both visualize and problematize a dialogic authorial approach. We will consider a case with a rich “e-paper trail” written by 11 undergraduate, pre-service teacher education students (mostly sophomores), and the instructor (Peter, the first author, pseudonym) in a course on cultural diversity.  The case focuses on the university students (future teachers) and their professor discussing several occasions that involved interactions between Peter and one minority child in an afterschool center. Our research questions in this empirical study were aimed at determining the successes, challenges, and failures of the dialogic authorial pedagogical approach and conditions for them
NESPORTUOJANČIŲ ASMENŲ PO NUGAROS SMEGENŲ PAŽEIDIMO FIZINIS PAJĖGUMAS
Authors: Adomavičienė Aušra , Kesienė Jūratė
Published: September 2016

Nepakankamas asmenų po NSP fizinis aktyvumas silpnina viso organizmo funkcijas, didėja sveikatos sutrikimų rizika, sergamumas lėtinėmis ligomis ir net mirštamumas. Fizinė veikla ar fiziškai aktyvus laisvalaikis teigiamai veikia ne tik fizinę sveikatą ar fizinį pajėgumą, bet ir psichoemocinę žmogaus būseną ir gyvenimo kokybę. Todėl labai svarbu užtikrinti fizinio pajėgumo savybių gerinimą taikant tikslingas fizines treniruotes, fizines veiklas bei aktyvų laisvalaikį. Mūsų darbo tikslas buvo ištiri nesportuojančių asmenų po nugaros smegenų pažeidimo fizinio pajėgumo parametrus ir jų pokyčius po dviejų savaičių treniruočių ir fizinių veiklų programos, Lietuvos paraplegikų asociacijos organizuojamose vasaros stovyklose Monciškėse, Šventojoje. Rezultatai: dalyvavo 57 nesportuojantys asmenys po nugaros smegenų pažeidimo, iš jų 51 (91,1%) vyras ir 6 (10,7%) moterys, vidutiniškai 28,39±5,48 metų. Pagal NSP tiriamieji suskirstyti į dvi grupes: 1 grupės 26 (46,4%) tiriamieji, turintys tetraplegiją, 2 grupės 31 (56,2%) tiriamasis, turintis paraplegiją. Įvertinus rankos judesių greičio ir ištvermės rodiklių pokyčius pagal Tepingo testo ir dėžučių ir kaladėlių testo „Box&block“ rezultatus, statistiškai reikšmingi pokyčiai buvo nustatyti tik tetraplegijos atveju (p<0,05). Sprogstamosios jėgos įverčiai reikšmingai nekito abejose grupėse (p>0,05). Vežimėlio valdymo įgūdžiai, manevringumas („aštuoniukės“ važiavimas) ir judėjimo greitis (20 metrų sprintas, 30 sekundžių važiavimas) reikšmingai pagerėjo abiejų tiriamųjų grupėse (p<0,05), tačiau išryškėjo, kad anaerobinis glikolitinis pajėgumas tetraplegijos atveju yra ženkliai mažesnis nei paraplegijos atveju (p<0,05). Dviejų savaičių treniruotės pagerino aerobinio pajėgumo bei ištvermės rodiklius, Kuperio (12 min.) važiavimo vežimėliu testo rezultatai parodė reikšmingus pokyčius tiek tetraplegijos, tiek paraplegijos atveju (p<0,05). Išvada. Dviejų savaičių treniruočių ir fizinių veiklų programa teigiamai veikė daugumą nesportuojančių asmenų po nugaros smegenų pažeidimo fizinio pajėgumo rodiklių.
Ankstyvos kineziterapijos poveikis mobilumui po klubo endoprotezavimo
Authors: Lizdenienė Vita , Lenickienė Svetlana
Published: September 2016

Taikant naują ankstyvą kineziterapijos metodiką po klubo endoprotezavimo operacijos pacientai greičiau sveiksta, anksčiau atsistato buvęs darbingumas. Tai leidžia pacientus iš ligoninės išleisti trečią ar ketvirtą parą po operacijos. Mūsų tyrimo tikslas: ankstyvos kineziterapijos metodikos įtaka mobilumui po klubo endoprotezavimo operacijos ūmiuoju periodu. Tyrimas atliktas Vilniaus universiteto Santariškių klinikų Ortopedijos – traumatologijos skyriuje nuo 2015 m. balandžio mėn. iki 2016 m. kovo mėn. Tyrime dalyvavo 60 pacientų, kuriems buvo atliktas klubo endoprotezavimas, priekiniu – šoniniu operaciniu pjūviu. Tyrime dalyvavo 34 moterys ir 26 vyrai. Vertintas mobilumas pagal 10 metrų ėjimo testą, papildomai fiziniam pajėgumui įvertinti matuotas pulsas prieš testo atlikimą, tik atlikus, po 1 min, po 3 min, po 5 min, taip pat vertinta kojų atitraukėjų, pritraukėjų, kelio tiesėjų izometrinė raumenų jėga rankiniu Lafayette dinamometru. Tyrimo rezultatai atskleidė, kad ankstyva kineziterapija labiau didina mobilumą, raumenų jėgą nei įprasta kineziterapija. Gauti statistiškai reikšmingi skirtumai (p<0,05) tarp mobilumo, raumenų jėgos pokyčių tiriamojoje ir kontrolinėje grupėse.
Pacientų po judamojo aparato traumų ir sergančių lėtinėmis neurologinėmis ligomis psichoemocinė būklė
Authors: Juocevičius Alvydas , Jasiulionienė Ieva , Bartkutė Ingrida , Stasiukynienė Jurgita , Slivovskaja Ieva
Published: September 2016

Darbe analizuojama psichologinio darbo Reabilitacijos, fizinės ir sporto medicinos centre (RFSMC) dinamika, atsižvelgiant į pacientų srautų ir procedūrų pasiskirstymą tarp jo padalinių, bei atvykusių pacientų psichoemocinės būklės tyrimai. Tikslas - ištirti pacientų po judamojo aparato traumų ir sergančių lėtinėmis neurologinėmis ligomis srautų pokyčius per paskutinius dešimt metų bei apsilankiusių pacientų psichoemocinės būklės rodmenis per paskutinius penkerius metus. Statistiniai duomenys apima 2006 -2015 metus. Pas RFSMC psichologus lankėsi 7027 pacientai, kuriems buvo suteiktos 40 658 procedūros, priklausomai nuo sudarytos psichologo programos. Didžiausi pacientų srautai stebimi 2015 metais (panašūs skaičiai stebimi 2011 ir 2012 metais). Išlieka tendencija, kad pacientų skaičius auga, atitinkamai ir suteiktų medicinos psichologo paslaugų skaičius didėja būtent 2015 metais. Siekiant įvertinti apsilankiusių pacientų psichoemocinės būsenos dinamiką, buvo pasirinkti pacientai, apsilankę ambulatorinėje reabilitacijoje po judamojo aparato traumų ir sergantys lėtinėmis neurologinėmis ligomis 2010 - 2015 metų laikotarpiu. Psichologinės paslaugos buvo suteiktos 2944 pacientams. Pacientų po judamojo aparato traumų nerimo išreikštumo lygis pagal A.S. Zingmond Nerimo ir depresijos skalę (HADS), jiems atvykus į ambulatorinės reabilitacijos skyrių, buvo aukštesnis, lyginant su pacientų, sergančių lėtinėmis neurologinėmis ligomis. Depresinių reakcijų nestebėta arba jos buvo žemo lygio. Pacientų, sergančių lėtinėmis neurologinėmis ligomis ir kuriems buvo taikytos psichologinės procedūros, nerimo ir depresinės reakcijos sušvelnėjo. Pacientų atvykimo ir išvykimo metu aukšto lygio depresinių reakcijų nestebėta.
Género y efectividad de la metodología enfermera en pacientes con insuficiencia cardiaca
Authors: Viñas-Vera Cipriano , García-Parra Ana María , Morales-Gil Isabel María
Published: September 2016

Estudios recientes demostraron que una intervención enfermera de educación sanitaria en la Insuficiencia Cardiaca (IC) evita descompensaciones. Por otro lado, dado que existen diferencias de género en los patrones de la IC, las intervenciones tendrán también efectos diferentes. Objetivo: determinar la existencia de posibles diferencias según el género de los pacientes, en el efecto de una intervención enfermera respecto al autocuidado. Material y método: Se realizó un estudio cuasi experimental con pacientes atendidos en consulta de IC (129). Seleccionados en dos tiempos, primer trimestre año grupo control (62), y segundo trimestre año grupo intervención (67).Todos se evaluaron tres veces, primera consulta, tres y seis meses. Al grupo intervención se aplicó en cada visita una intervención enfermera que consistía en la educación terapéutica, control y seguimiento de su IC. Resultados: inicio: T.A. sistólica hombres 133.90±0.96(DE 27.77), mujeres 119.64±0.57 (DE18.72). Cuidador 93% hombres, 63% mujeres. Conducta terapéutica 2.07+0.02 (DE0.20) hombres,3.04+0.01 (DE 0.31) mujeres. Final: autocuidado -16.00±2.08 (DE10.99) hombres, -9.68±2.22 (DE12.92) mujeres. Adherencia terapéutica1.32±0.35 (DE1.83) hombres, 2.94±1.87 (DE10.93) mujeres. Mejoría muy similar de los NOC en todos. Conclusiones: en el grupo de estudio, participaron más mujeres que hombres,estos[1] últimos tuvieron mayor co morbilidad, consumo de tabaco y alcohol que lasmujeres y disponían de una cuidadora informal. Con relación al autocuidado y adherencia al tratamiento, en la valoración inicial, no se encontró una diferencia significativa entre ambos géneros, mientras que en la calidad de vida el resultado fue mejor en los hombres. Después de la intervención, se encontró que todos los pacientes mejoraron los resultados en calidad de vida y en el NOC (Nursing outcomesclassification), así como el autocuidado y la adhesión terapéutica en todos los participantes. [2] Es importante destacar que los hombres doblaron la puntuación en autocuidado y las mujeres en adhesión terapéutica.
Visita restrictiva / Visita no restrictiva en una unidad de paciente crítico adulto
Authors: Montenegro Paulina Anativia , Farias-Reyes Daniela , Galiano-Gálvez María Alejandra , Quiroga-Toledo Natalia
Published: September 2016

Objetivo: buscar evidencia que responda a la pregunta ¿cuál es el impacto en el paciente, familia y personal de salud de visitas no restrictivas versus restrictivas? Método: revisión sistemática. Estrategia de búsqueda: 1993-2016 en Cochrane Library, Joanna Briggs, EBSCO,PubMed, CINHAL, Trip DataBase, con términos Mesh y palabras claves. Criterios de selección de artículos: revisiones sistemáticas,ensayos clínicos randomizados, no randomizados, cohortes, casos controles, estudios descriptivos correlacionales, UCI adultos, español e inglés. Recolección y análisis: selección inicial de 293 artículos, aplicando criterios de selección quedaron 13 artículos para análisis crítico.Calidad metodológica analizada con guías CASPe. Resultados: la visita no restrictiva no incrementa riesgo de infección, la ansiedad delpaciente es menor, la satisfacción de enfermeras es mayor, la presencia familiar ayuda a recuperación del paciente, la familia está más informada, satisfecha y con mejor conocimiento de situación. La frecuencia de complicaciones cardiovasculares es mayor en pacientes con visitas restrictivas. Conclusiones: las visitas no restrictivas en UCI no generan daño al paciente, por el contrario contribuyen a la recuperación de su salud física y emocional.
Representações sociais do cuidado de doentes terminais no domicílio: o olhar do cuidador familiar
Authors: Oliveira Stefanie Griebeler , Quintana Alberto Manuel , Denardin-Budó Maria de Lourdes , Luce-Kruse Maria Henriqueta , Pötter-Garcia Raquel , Wünsch Simone , Sartor Silvia Francine
Published: September 2016

Objetivo: conocer las representaciones sociales construidas por los cuidadores familiares de pacientes terminales sobre el cuidado en el domicilio. Método: estudio cualitativo con once cuidadores familiares de enfermos terminales, registrados en el servicio de internación domiciliaria de un hospital universitario del sur de Brasil. Realizaron entrevistas narrativas, analizadas por medio del análisis de contenido. Se definieron cuatro categorías: cuidadores hombres y mujeres, una visión diferente; la inversión de roles y los cambios en el cuidado; experiencias como fuente de conocimiento para el cuidado en el hogar; y desafíos del cuidado. Resultados: para los cuidadores hombres las representaciones difieren de las de las mujeres debido a que el cuidado incluye su entorno. Los hombres no atribuyen la angustia a la sobrecarga, pero si al temor de perder un ser. Otras representaciones remiten a la imposibilidad de elección para asumir el papel de cuidador y a la inversión de roles, lo que vuelve al paciente sometido al cuidador. Conclusión: esta investigación permitió conocer cómo los cuidadores familiares construyen los significados e interpretan el cuidado que realizan en el domicilio por medio del programa de hospitalización domiciliaria. Se destaca la función de los profesionales de la salud en orientar al cuidador familiar para realizar el cuidado.
Explorando las emociones de la mujer en la atención perinatal. Un estudio cualitativo
Authors: Arnau-Sánchez José , Martínez-Ros María Teresa , Castaño-Molina María Ángeles , Nicolás-Vigueras María Dolores , Martínez-Roche María Emilia
Published: September 2016

Objetivo: explorar las emociones que emergen en la mujer durante el embarazo, parto y el puerperio a lo largo del itinerario asistencial de atención primaria y hospitalaria. Método: estudio cualitativo basado en la Teoría Fundamentada. Se realizaron dos grupos de discusión a profesionales: obstetras, matronas y enfermeras. Igualmente, se desarrollaron entrevistas en profundidad a mujeres en el puerperio. Resultados: las emociones de la mujer en la atención perinatal aparece como categoría central. A partir de ésta, las emociones negativas emergen por la interacción de cinco metacategorías: a) Miedo: dolor al parto y desajuste de expectativas, b) Ansiedad e incertidumbre: enfrentándose a la amenaza del riesgo y la desinformación, c) Vergüenza: comprometiendo la privacidad, d) Ira y Desamparo: asimetría en la estructura relacional, e) Soledad: discontinuidad en la atención asistencial. Las emociones positivas surge de la metacategoría: f) Tranquilidad y confianza: construyendo una interacción clínica simétrica y humanizada. Conclusiones: se constata una variabilidad emocional debido a la coexistencia de los modelos tecnocrático y biopsicosocial. Este proyecta humanidad en los cuidados perinatales, frente a un modelo biomédico marcado por una estructura relacional paternalista y asistencia fragmentada; ambos serán determinantes en la emergencia de emociones en la atención perinatal.
OCORRÊNCIA DE AGROTÓXICOS EM ÁGUAS USADAS COM IRRIGAÇÃO DE ARROZ NO SUL DE SANTA CATARINA
Authors: Back Álvaro José , Deschamps Francisco Carlos , Santos Maria da Gloria da Silva
Published: September 2016

Este trabalho teve como objetivo avaliar a presença de resíduos de agrotóxicosnas águas superficiais de drenagem das lavouras de arroz irrigado no sistemapré-germinado na região sul de Santa Catarina. Foram analisadas amostras deágua coletadas nos canais de irrigação e drenagem de um sistema coletivode irrigação durante três anos de cultivo. Foram encontrados resíduos decarbofurano em amostras de água de drenagem coletadas nos três anosmonitorados, com concentrações de até 5 μg.L-1. A maioria (81%) das amostrasde água superficial das áreas de drenagem das lavouras de arroz irrigadocontinha resíduos de pelo menos 1 herbicida. Dentre os herbicidas estudados,o bentazona foi identificado em maior frequência (50%), no entanto, tambémforam encontrados resíduos de bispyribac-sodium, quinclorac e thiobencarb.Entre os fungicidas, destacam-se o tryciclazole, azoxystrobin e tebuonazol.Foram encontrados resíduos do inseticida malathion em 5,2% das amostras,porém, em concentrações abaixo do limite detectável.
ECOEFICIÊNCIA, LOGÍSTICA REVERSA E A RECICLAGEM DE PILHAS E BATERIAS: REVISÃO
Authors: Conte Andria Angélica
Published: September 2016

O artigo teve como objetivo fazer uma revisão sobre ecoeficiência, logísticareversa, métodos de reciclagem e as rotas mais utilizadas para a recuperaçãodos materiais e componentes de pilhas e baterias exauridas. São evidenciadasas vantagens e desvantagens das rotas de processos de reciclagem maiscomumente utilizados. Ressaltam-se também os riscos à saúde e aomeio ambiente por processos de lixiviação ou percolação dos compostosquímicos existentes na composição desses sistemas eletroquímicos. Sãocitadas as legislações da Política Nacional de Resíduos Sólidos (PNRS) e aResolução n° 401 do Conselho Nacional do Meio Ambiente (CONAMA), de4 de novembro de 2008, vigentes no Brasil. Este trabalho é apresentado pormeio de uma pesquisa de artigos científicos publicados, suas característicasprincipais e conclusões, pelo período dos últimos sete anos e por materialinformativo de órgãos e instituições.
ERROS NA ADMINISTRAÇÃO DE MEDICAMENTOS: EVIDÊNCIAS E IMPLICAÇÕES NA SEGURANÇA DO PACIENTE
Authors: Gomes Andréa Tayse de Lima , De Assis Yole Matias Silveira , Silva Micheline Da Fonseca , Costa Isabelle Katherinne Fernandes , Feijão Alexsandra Rodrigues , Santos Viviane Euzébia Pereira
Published: September 2016

O estudo objetiva identificar as evidências e as implicações dos erros na administração de medicamentos na segurança do paciente. Trate-se de uma revisão integrativa, com busca dos estudos em quatro bases de dados, em maio de 2015. Obteve-se uma amostra de 40 artigos e foram submetidos à estatística descritiva. Houve predomínio de estudos descritivos – nível de evidência 4 (n=28; 70%), publicados no Brasil (n=17; 42,5%). Quanto aos erros, destacaram-se: erro de dosagem (n=27; 67,5%), medicação errada (n=25; 62,5%); troca de paciente (n=21; 52,5%); erro de horário (n=20;5 0%); via errada (n=17;42,5%), além de erro documental, omissão de justificativas quando necessário e outras. Este tipo de evento é responsável por deixar sequelas irreparáveis nos pacientes ou até levar à morte.