bluuebunny/crossref_metadata_2025_split huggingface dataset:
Elastic Constants and Graphitic Grain Boundaries of Nanocrystalline CVD-Diamond Thin Films: Resonant Ultrasound Spectroscopy and Micromechanics Calculation
Authors: Ogi Hirotsugu , Nakamura Nobutomo , Tanei Hiroshi , Ikeda Ryuji , Hirao Masahiko , Takemoto Mikio 
Published: June 2019

AbstractUsing resonant-ultrasound spectroscopy coupled with laser-Doppler interferometry, we determine the independent elastic constants of nanocrystalline CVD-diamond thin films with thickness between 2-12 μm. They are deposited on oriented monocrystal silicon substrates by the hot-filament methane/nitrogen CVD method. The diagonal components of the elastic constants are smaller than those of microcrystalline CVD diamond films and bulk diamond. However, the off-diagonal component is larger. We attribute these observations to the presence of sp2-bonded graphitic phase at grain boundaries. A micromechanics model assuming inclusions of thin graphitic plates consistently explains the observations.
In-Situ Observations on Crack Propagation Along Polymer/Glass Interfaces.
Authors: Vellinga W.P. , Timmerman R. , Tijum R. van , De Hosson J.Th.M. 
Published: June 2019

AbstractThe propagation of crack fronts along a PET-glass interface is illustrated. The experimental set-up consists of an Asymmetric Double Cantilever Beam in an optical microscope. Image processing techniques used to isolate the crack fronts are discussed in some detail. The fronts are found to propagate inhomogeneously in space and time, in forward bursts that spread laterally along the front for some distance. In some cases the forward movement of a crack can be almost entirely due to the lateral movement of forward steps (analogous to “kinks”) along the crack front.
Strain and Grain Size Effects on Epitaxial PZT Thin Films
Authors: Blanco Oscar , Heiras Jesus 
Published: June 2019

AbstractEpitaxial ferroelectric thin films of lead zirconium-titanium oxide, Pb(Zr0.53Ti0.47)O3 (PZT), were successfully grown on SrTiO3, LaAlO3, and Sr(Nb)TiO3 single crystal substrates by a modified RF sputtering technique at high oxygen pressures. The structural properties of the films were evaluated by θ/2θ, ω and ø scans. From these data the crystalline orientation relationships may be extracted. For films grown on SrTiO3 and Sr(Nb)TiO3 substrates, the following orientation relationships were determined: PZT [001] parallel to [001] of the substrate, and PZT [100] parallel to [100] of the substrate. Films grown on LaAlO3 substrates showed a bi-domain crystalline structure with orientation relationships as follows: PZT [100] parallel to [001] of the substrate and PZT [001] parallel to [001] of the substrate. This work was focused to the determination the strain and grain size coefficients, and the analysis of their contribution on the peak broadening in the XRD patterns, and in considering their effects over the ferroelectric behavior. From Williamson-Hall plots, it was possible to conclude that the enhancement of the crystalline film properties (epitaxy and single crystalline domains) reduce the short range strains contribution to peak broadening. On other hand, the grain size contribution to peak broadening was increased with the enhancement of the film cristallinity.
Micro/Nano Indentation and Micro-FTIR Spectroscopy Study of Weathering of Coated Engineering Thermoplastics
Authors: Gupta Samik , Lohmeijer Jan , Sebastian Savio , Preschilla Nisha , Biswas Amit 
Published: June 2019

AbstractA novel combination of depth-sensing nano-indentation, micro-indentation and micro-FTIR techniques is employed towards understanding the durability of coating layers used on engineering thermoplastics upon exposure to harsh weathering environments. This combination of techniques enables study of changes in surface-to-bulk properties in the clearcoat-substrate system upon weathering; typically observed as a degradation starting from the surface and then proceeding inwards to the bulk of the material. Nano-indentation measurements carried out to understand the mechanical properties of the coating layer provide insights into the changes in hardness and modulus upon prolonged weathering exposure. Depth-sensing micro-indentation and micro-FTIR spectroscopy studies performed to evaluate mechanical performance and chemical changes, respectively, explain the influence of the substrate on the coating layer, especially at the interface upon weathering. This unique combination of depth-sensing indentation and micro-FTIR spectroscopy has led to an understanding of the properties of the coating layer and the substrate individually as well as an integral system as a function of weathering exposure time. Finally, the physico-chemical properties of the coating and substrate are linked to performance prediction, enabling optimization of coating-substrate combinations.
Experiments on the Elastic Size Dependence of LPCVD Silicon Nitride
Authors: Ren Yuxing , Lam David C. C. 
Published: June 2019

AbstractRecent experimental observations showed significant elastic size effects in small scales. While surface stress theories are used to describe nanometer scale size effects, strain gradient theories describe size effect observed in micron sized epoxy. Size effects in single crystalline silicon and epoxy make it unclear whether there is size dependence of the elastic behaviors of widely used LPCVD silicon nitride thin films in submicron scale. In this paper, submicron thick LPCVD silicon nitride beams were fabricated and bending tests were conducted on the beams. Results showed fluctuating normalized bending rigidities in the beams with different thickness. XPS and XRD analyses were used to analyze the material consistency of the beams. The fluctuations maybe related to varying crystalline phase fractions in the thin films. The beams were annealed and bending tests were conducted to investigate possible correlation between the fluctuations and crystalline phase fractions. Results showed similar level of fluctuations in normalized bending rigidities before and after annealing while XRD results of the annealed films showed increase in crystalline phase fractions for all thicknesses. While LPCVD silicon nitride may have size dependence in the nanometer scale, size dependence of normalized bending rigidity of LPCVD silicon nitride appears to be insignificant in submicron scale.
Characterization of Stress Relaxation, Dislocations and Crystallographic Tilt Via X-ray Microdiffraction in GaN (0001) Layers Grown by Maskless Pendeo-Epitaxy
Authors: Barabash R.I , Ice G.E. , Liu W. , Einfeldt S. , Hommel D. , Roskowski A. M. , Davis R. F. 
Published: June 2019

AbstractIntrinsic stresses due to lattice mismatch and high densities of threading dislocations and extrinsic stresses resulting from the mismatch in the coefficients of thermal expansion are present in almost all III-Nitride heterostructures. Stress relaxation in the GaN layers occurs in conventional and in pendeo-epitaxial films via the formation of additional misfit dislocations, domain boundaries, elastic strain and wing tilt. Polychromatic X-ray microdiffraction, high resolution monochromatic X-ray diffraction and finite element simulations have been used to determine the distribution of strain, dislocations, sub-boundaries and crystallographic wing tilt in uncoalesced and coalesced GaN layers grown by maskless pendeo-epitaxy. An important parameter was the width-to-height ratio of the etched columns of GaN from which the lateral growth of the wings occurred. The strain and tilt across the stripes increased with the width-to-height ratio. Tilt boundaries formed in the uncoalesced GaN layers at the column/wing interfaces for samples with a large ratio. Sharper tilt boundaries were observed at the interfaces formed by the coalescence of two laterally growing wings. The wings tilted upward during cooling to room temperature for both the uncoalesced and the coalesced GaN layers. It was determined that finite element simulations that account for extrinsic stress relaxation can explain the experimental results for uncoalesced GaN layers. Relaxation of both extrinsic and intrinsic stress components in the coalesced GaN layers contribute to the observed wing tilt and the formation of sub-boundaries.
Human Papillomavirus Vaccine Frequency for University of Kansas Medical Center Pediatric Patients
Authors: Theodoro Mariana , Demo Andrew , Katzer Cara , Katzer Clinton , Shaw Pam , Satterwhite Catherine L. 
Published: June 2019

Background. Human papillomavirus (HPV) vaccination is recommendedfor all adolescents aged 11 to 12 years, but coveragein Kansas is exceptionally poor. To understand local coverage, receiptof the 3-dose HPV vaccine series among pediatric patients atthe University of Kansas Medical Center (KUMC) was evaluated.
Methods. All patients aged 11 to 12 years who were seen by aKUMC primary care provider (family medicine and pediatrics)in 2013 were included in the retrospective chart review. Recordswere reviewed through December 31, 2014 to capture the numberof HPV doses received, and receipt of other recommendedvaccines (tetanus-diphtheria-pertussis and meningococcal conjugate).Pearson’s chi-squared tests were used to evaluate relationshipsbetween HPV vaccination and patient characteristics.
Results. Of the 261 eligible females and 243 eligible males, 71.2%received ≥ 1 HPV vaccine dose, 55.2% received ≥ 2 doses, and39.3% completed the HPV vaccine series (3 doses). Although vaccineinitiation was slightly lower in males compared to females(67.1% vs. 75.1%, p = 0.047), no difference in vaccine completionwas seen between males and females (37.0% vs. 41.7%, p = 0.319).Over 80% of patients received other concurrently recommendedvaccines (Tdap: 81.7%, meningococcal: 81.3%). HPV series completionoccurred more often among Spanish-speaking femalescompared to English-speaking females (59.5% vs 37.7%; p < 0.01).Conclusions. The proportion of adolescents who received theHPV vaccination at KUMC is substantially higher than nationaland state estimates, but there is room for improvement forboth initiation and series completion. KS J Med 2016;9(1):1-5.
Second Generation Patient Specific Total Knees Demonstrate a Higher Manipulation Rate Compared with “Off-the-shelf” Implants
Authors: Haeder Paul R. , Chong Alexander C.M. , Bhargava Tarum 
Published: June 2019

Introduction. Patient specific total knee arthroplasty (TKA) theoreticallyprovides a more accurate fit to the native knee but mayhave difficulty achieving full range of motion (ROM) post-operatively.Post-operative ROM data were compared between patientswho underwent cemented patient-specific cruciate-retaining(PSCR) and standard cemented posterior-stabilized (SPS) TKAs.
Methods. PSCR and SPS TKAs that were performed from January2014 to September 2015 by the same surgeon using the same postoperativeprotocols at two selected facilities were reviewed. Twoandsix-week post-operative ROM data were obtained and thenumber of patients with knee flexion less than 110° was recorded.
Results. Twenty-one patients in the PSCR group and 57 patientsin the SPS group were included. The percentage of patientswith knee flexion less than 110° was similar in both groups preoperatively(10% vs 14%, p = 0.60) and two-week post-operatively(57% vs 68%, p = 0.35). However, at six-week post-operativelythere was significant difference (29% vs 7%, p = 0.01).
Conclusions. These results provide evidence to alert orthopaedicsurgeons when using these patient specific implants versus conventionalTKA methods. Patients whose TKA was performed usingpatient specific cutting guides struggled to obtain 110° of kneeflexion. Close monitoring, aggressive physical therapy, and earlymanipulation are recommended when using patient specific cuttingguides and custom total knee implants. Further evaluation ina larger group of patients is warranted. KS J Med 2016;9(4):88-92.
Princípios educacionais de Dom Bosco e a Pedagogia Social: possíveis diálogos na educação de idosos
Authors: Sousa Ana Maria Viola de 
Published: June 2019

Dom Bosco, fundador das Congregações Salesianas, desenvolveu um sistema educacional humanitário, no qual a ênfase principal era a pedagogia da vivência e do trabalho, tendências que são observadas nas práticas educativas propostas pela Pedagogia Social. Amorevolezza como afeto e sentimento de amor, pode ser traduzida nas atitudes relacionais entre gerações. Ancorada na ludicidade, a educação de idosos embasada na pedagogia social, além de propiciar a vivência em ambiente mais sociável, estimula também a incorporação de novos saberes necessários à transformação da realidade social do idoso, na busca pela melhor qualidade de vida.AbstractEducational principles of Don Bosco and Social Pedagogy: possible dialogues in the elderly educationDon Bosco, founder of the Salesian Congregation, developed a humanitarian educational system, in which the main emphasis was the pedagogy of experience and labor, trends that are observed in educational practices proposed by the Social Pedagogy. Amorevolezza understood as affection and loving kindness can be translated into relational attitudes between generations. Anchored in playfulness, the elderly education grounded in social pedagogy, provides the experience in more social setting and also stimulates the incorporation of new knowledge, necessary totransform the social reality of the elderly, in the pursuit of better quality of life.ResumenPrincipios educativos de Don Bosco y Pedagogía Social: posibles diálogos en la educación del adulto mayorDon Bosco, fundador de la Congregación Salesiana, desarrolló un sistema educativo humanitario, en que el énfasis principal fue la pedagogía de la experiencia y eltrabajo, las tendencias que se observan en las prácticas educativas propuestas por la Pedagogía Social. Amorevolezza compreendida como el afecto y el sentimiento de amor, puede traducirse en actitudes de relación entre las generaciones. Anclado en la ludicidade, la educación de los ancianos basada en la pedagogía social promuove la experiencia en ambientes más sociales, también estimula la incorporación de nuevos conocimientos necesarios para transformar la realidad social de las personas mayores, en la búsqueda de una mejor calidad de vida.Revisor do inglês: Prof. Tadeu GiattiRevisor do espanhol: Prof. Lilian de Souza
Removal of metals from technogenic waters from abandoned coal mines using geochemical barriers
Authors: Arefieva Olga D. , Tregubova Valentina G. , Gruschakova Natalya V. , Grinenko Elena F. 
Published: June 2019

Abstract
A study was made of the possibility of using natural materials (vermiculites, zeolite) and wastes (ash from the Partizansk Coal-Burning Power Plant) as sorbents in geochemical barriers to manage discharges (technogenic waters) from abandoned coal mines and reduce metal concentrations to established, acceptable standards. Vermiculite from the Kovdor deposit was shown to reduce the concentrations of Fe, Co, Ni, Cu, and Zn cations, in both direct and inverse soil column models, by between two and five times.
Cost economics in construction of multi storied buildings
Authors: Radhakrishnan S. , Selvan K.G. 
Published: June 2019

India is fast moving forward from agrarian economy to Industrial Economy. Our country is considered to be a safe platform for industrial investment by the world. Global Leaders and very many MNCs (Multi-National Companies) are evincing keen interest in having Joint Venture or opening their manufacturing facility in India. India is witnessing a boom in industrialisation. This leads to vast employment opportunities to people of all walks of life. People are moving from rural areas to urban areas for occupational needs. This leads to mass arrival of people to city and consequently the rental costs also shoot up substantially. The industrial wage structure being reasonable with assured disposable income, people who prefer to stay in city start comparing rental costs versus paying EMI towards owning an apartment for themselves. The idea gets strong rooted with the easily available institutional finance to people, especially to youngsters with longer duration of EMI. All these result in a sustained demand for apartments. The builders, particularly in the city, are cashing in on the opportunity by embarking upon construction of multi storied buildings in the city and also the outskirts of same.
Lugares, fluxos e itinerários no comércio sexual de e na rua: redes sociais na cidade de Florianópolis (SC)
Authors: Cavilha Juliana 
Published: June 2019

Este artigo é parte da pesquisa de doutorado que pretendeu compreender as práticas sexuais associada à conformação da paisagem urbana no centro da cidade de Florianópolis, a partir de um estudo etnográfico com as mulheres profissionais do sexo que atuam nesta parte da capital catarinense. Esta escrita apresenta as redes sociais e descreve o complexo conjunto de relações sociais, hierarquias e conflitos que entrelaçam a vida destas profissionais e que as posiciona diferencialmente em seus territórios de trabalho.Palavras chave: Redes sociais. Prostituição. Territórios. Trabalho. Cidade. Places, streams and routes the sex trade and on the street: social networks in the city of Florianopolis (SC) Abstract This article is part of a doctorate research that aimed to comprehend the sexual practices, associated to the urban environment conformation in the central area of Florianopolis/SC, from an ethnographic study made with sex professional women which work is this part of city. The text shows the social networks and describes the complex set of social relations, hierarchies, and conflicts which interconnect the life of these workers and which is responsible for positioning them differently in their working territories.Keywords: Social networks. Prostitution. Territories. Work. City.
Territórios urbanos, redes sociais e memória coletiva: a cidade narrada e (re)inventada sob uma perspectiva geracional
Authors: Nunes Rojane Brum 
Published: June 2019

O presente artigo visa refletir acerca das implicações do fenômeno da memória coletiva na configuração de territórios urbanos e nas formas de sociabilidade nele engendradas através de redes sociais de pertença tecidas e (re)atualizadas pelos grupos e indivíduos em suas práticas cotidianas. Tais reflexões serão empreendidas a partir de uma pesquisa etnográfica realizada entre maio de 2008 e dezembro de 2010, junto a grupos de aposentados que freqüentam cotidianamente o Centro da cidade de Santa Maria, RS, Brasil, configurando diferentes territórios de “sociabilidade lúdica” nesse espaço urbano.Palavras chaves: Memória Coletiva. Redes Sociais. Território. Urban areas, social networks and collective memory: the narrated city and (re)invented in a generational perspective. Abstract The present article aims to reflect about the implications of the phenomenon of collective memory in shapin urban territories and in the forms of sociability engendered in them through social networks of belonging woven and reupdated by the groups and individuals in their daily practices. These considerations Will be taken from an ethnography research conducted between May 2008 and December 2010, with the retired groups who daily attend the Santa Maria`s downtown, RS, Brazil, configuring different territories of “sociability play” in this urban space.Keywords: Collective memory. Social networks. Territory.
Tan lejos, tan cerca. Apuntes para pensar un duelo colectivo en Facebook
Authors: Triquell Agustina 
Published: June 2019

El artículo se propone reflexionar en torno a una modalidad específica de duelo colectivo que tiene lugar en Internet. Se trata de el perfil de un usuario de Facebook alrededor del cual amigos y familiares utilizan el espacio para recordar, homenajear y canalizar el dolor de la ausencia. Accedemos al relato conformado por retazos con los que los sujetos construyen en este santuario doblemente plural: pluralidad de actores, pluralidad de soportes que son utilizados para llevar adelante un duelo público y dialogado, en el que se comparten sus recuerdos y se mantiene funcionando una especie de santuario virtual.Si el cambio en los ritos en torno a la muerte implica un cambio en la concepción misma del fenómeno (van Gennep, 1992a) nos encontramos aquí ante una nueva modalidad de ritualidad, en la que las tecnologías digitales vienen a dar un lugar a la ausencia física, generando otro tipo de presencias.Palabras Clave: Duelo. Redes sociales. Muerte. Ritual. Fotografia. So far, so close. Notes around Facebook collective mouringAbstract This article proposes reflect on collective mourning on the Internet social networks. The particular case we work with is a Facebook user´s profile which, after her death, remains active with the postings of her relatives and friends. They use this online space to remember and to honor her as well as canalizing their pains and sorrows. Our analysis is based on the reading of the images and texts that live together in this virtual sanctuary, doubly plural: a plurality of actors and a plurality of visual and textual elements used to carry out a public and collective mourning, where memories and anecdotes are shared. If the changes in the rites around death entail a modification in the conception of the phenomenon itself (van Gennep, 1992a), we find ourselves in front of a new modality of ritualism, where digital technologies take up with physical absence, creating other kind of presences.Keywords: Mourning. Social Networks. Death. Ritual. Photography.
Interações e alteridade nas apropriações de redes sociais e games: um estudo em Lan House popular
Authors: Barros Carla 
Published: June 2019

O artigo tem como objetivo investigar apropriações de tecnologias digitais em experiências de sociabilidade junto a um grupo pertencente às camadas populares, a partir de um trabalho de campo etnográfico realizado em lan houses. O foco do artigo recai sobre o papel das redes sociais e dos games - especialmente os massivos multiplayers on line – como motores da sociabilidade local e as apropriações de redes sociais como o Orkut na construção da alteridade no universo virtual.Palavras chave: Redes sociais. Sociabilidade. Alteridade. Camadas populares. Interaction and alterity in appropriations of social networks an games: a study in a popular Lan House Abstract The objective of this study is to investigate appropriations of digital technologies in experiences of sociability in a group of poor urban workers, using an ethnographic approach in public spaces as lan houses. The article focuses on the role of social networks and games – especially the massive multiplayers on line – as a motor of local sociability and the appropriation of social networks as Orkut as a way of producing alterity in the virtual universe.Keywords: Social networks. Sociability. Alterity. Popular classes.