bluuebunny/crossref_metadata_2025_split huggingface dataset:
Relación entre la palabra y la imagen en Medias dulces de Ivar Da Coll
Authors: Ordoñez Trujillo Doris Cenid 
Published: February 2018

Este artículo trata la relación semiótica e hipertextual entre imagen y palabra en el libro infantil Medias dulces de Ivar Da Coll. Para ello, se considera el concepto de signo de Eco, la relación entre índice, ícono y símbolo, de Peirce, desarrollada por Debray, y el modelo actancial de Greimas. Este análisis busca aclarar cómo se despliega la relación entre imagen y palabra para desentrañar sentidos intrínsecos del texto, con el fin de ahondar en el ejercicio interpretativo de la obra literaria.
Do mercado de livros ao acampamento militar: um estudo da difusão da 'Eneida' no Império a partir dos 'exercitationes scribendi'
Authors: Mota Thiago Eustáquio Araújo 
Published: February 2018

Segundo a tradição biográfica tardo-antiga, Virgílio expressou antes de morrer o desejo de incinerar os livros da Eneida, uma vez que o trabalho da composição estava incompleto. Até a invenção do códice, o principal meio de divulgação da Eneida era muito provavelmente o volumen constituído por folhas de papiro. Tendo em vista as limitações deste tipo de suporte, é provável que os livros do poema circulassem separadamente. A julgar pelo corpus papirológico (31 papiros identificados até o atual estágio da pesquisa), pela epigrafia e pelas menções esporádicas dos autores latinos, o épico virgiliano alcançou uma rápida difusão nos quadros do Império logo nos dois primeiros séculos de sua publicação (séc. I a.C.). Como parte da tipologia da fonte pertinente à proposta de abordagem histórica do épico, debruçamo-nos neste artigo sobre um recorte da arqueologia do texto anterior aos codices antiquores (séculos IV-V). Nossa abordagem considera a problemática do suporte do volumen e a difusão dos poemas virgilianos, tendo em vista sua fruição poética e seu uso escolar a partir de um grupo de papiros categorizados como exercitationes scribendi.
THE RELATIONSHIP BETWEEN PERCEIVED ORGANIZATIONAL JUSTICE AND JOB INVOLVEMENT IN FEMALE TEACHERS OF HIGH SCHOOL SECOND YEAR IN ISFAHAN CITY
Authors: Forughi Fatemeh , Khorasgani Narges Saeidian 
Published: February 2018

Purpose: This study aimed at specifying the relationship between perceived organizational justice and job involvement in female teachers of the high school second year in Isfahan city and conducted in a correlation method in 2015-5016.
Methodology: Research population was all female teachers who teach to the student of 2nd year in high schools of Isfahan 6 educational areas (1475 individuals). From among this population, 260 individuals were selected based on Cochran sample mass in a multi-step cluster sampling. Research instruments were organizational justice questionnaire by Colquitt (2010) and job involvement questionnaire proposed by Kanugo (1983). Based on Cronbach's Alpha, the stability of these questionnaires was 80% and 90% for psychological assets and teachers work involvement, respectively. The data were then analyzed using descriptive and deductive statistic including Pierson correlation test, step to step regression.
Main Findings: Results of this study show that there exists a positive, meaningful relation between organizational justice and 4 of its dimensions (procedural, distributional, personal and informational) and job involvement. (p<0.01) results of the multi-regression analysis indicate that organizational justice and 2 dimensions of that (procedural and interpersonal ones) have got the most power to predict teachers' job involvement.
Implications: Results of this study can enrich the knowledge about the relationship between perceived organizational justice and job involvement in female teachers of the high school.
Originality: As per author’s information and belief, first-time relationship between perceived organizational justice and job involvement in female teachers of high school of Isfahan city, Iran.
Influence of steroid prophylaxis on prenatal and postnatal parameters in fetuses with intrauterine growth restriction
Authors: Grzegórzko Maksymilian , Gibała Piotr , Gębicka Kinga , Bujacz Ewa , Gałuszka Michalina , Kozubal Tomasz , Mackiewicz Mirosława , Surmiak Piotr , Baumert Małgorzata , Witek Andrzej 
Published: February 2018

WstępPodawanie steroidów w ciąży do 34 hbd przyspiesza rozwój dojrzałości płuc płodu i stymuluje wydzielanie surfaktantu, przez co zapobiega występowaniu zespołu zaburzeń oddychania. Udowodniono, że podawanie steroidów prenatalnie powoduje czasowe obniżenie akcji serca płodu o adekwatnej masie ciała (AGA). W pracy podjęto próbę odpowiedzi na pytanie: jak długo utrzymuje się czasowe obniżenie akcji serca płodu (fetal heart rate – FHR) po podaniu steroidów u płodów z wewnątrzmacicznym ograniczeniem wzrastania?Materiał i metodyBadanie przeprowadzono z udziałem 152 pacjentek Kliniki Ginekologii i Położnictwa SUM w Katowicach, hospitalizowanych w latach 2013–2016, podzielonych na dwie grupy: AGA – 109 przypadków, IUGR – 43 przypadki. W obu grupach została włączona profilaktyka steroidowa – betametazon lub deksametazon. Przeanalizowano zapisy KTG oraz MONAKO wykonane przy przyjęciu pacjentki oraz 24 i 48 godzin po podaniu steroidów, oceniając linię podstawową, epizody bradykardii oraz parametry zmienności LTV i STV. Wyniki opracowano w programie Statistica 12PL.WynikiBradykardia posteroidowa występowała częściej w grupie AGA niż w grupie IUGR. Po podaniu pierwszej dawki steroidów zauważono istotnie niższą wartość FHR w czasie trwania epizodów bradykardii w grupie AGA niż w grupie IUGR (p = 0,0001). Obniżenie FHR bez bradykardii było znamiennie większe w grupie AGA niż w grupie IUGR (p = 0,0001). Średnia wartość STV po podaniu drugiej dawki steroidów była znamiennie niższa w grupie AGA niż w grupie IUGR (p = 0,006). Ciśnienie parcjalne tlenu było wyższe w grupie IUGR (p = 0,001).WnioskiW świetle powyższych wyników wydaje się, że płody z IUGR wykazują lepszą tolerancję podawanych steroidów manifestującą się rzadszym występowaniem bradykardii i wyższymi wartościami STV oraz mniejszymi wahaniami wartości FHR.
Uji Aktivitas Antibakteri Ekstrak Sarang Lebah Hutan (Apis Dorsata) Terhadap Pertumbuhan Staphylococcus aureus, Escherichia coli Dan Pseudomonas aeruginosa
Authors: Prestianti Ika , Baharuddin Maswati , Sappewali Sappewali 
Published: February 2018

<p>Penyakit infeksi akibat bakteri merupakan masalah serius dalam kesehatan. Antibakteri alami yang dapat digunakan untuk menghambat pertumbuhan bakteri yaitu sarang lebah hutan (<em>Apis dorsata</em>) (propolis, kantong madu, kantong telur dan kantong pollen) yang mengandung senyawa metabolit sekunder seperti flavonoid, tanin dan asam fenolat.Tujuan dari penelitian ini adalah megetahui aktivitas antibakteri ekstrak sarang lebah hutan dari setiap pelarut yang digunakan dan untuk mengetahui pengaruh konsentrasi ekstrak sarang lebah hutan terhadap pertumbuhan bakteri <em>Staphylococcus aureus, Escherichia coli </em>dan<em> Pseudomonas aeruginosa</em>. Pengujian antibakteri dilakukan dengan metode difusi kertas cakram dengan lama perendaman 1 jam kemudian diinkubasi selama 3 x 24 jam. Hasil penelitian menunjukkan bahwa aktivitas antibakteri ekstrak metanol sarang lebah memiliki aktivitas tertinggi pada bakteri <em>E. coli </em>yaitu 3,8 mm pada konsentrasi 8%, ekstrak etil asetat sarang lebah pada bakteri <em>S. a ureus </em>yaitu 3,72 mm pada konsentrasi 8% dan ekstrak n-heksan sarang lebah pada bakteri <em>E. coli </em>yaitu 16,1 mm pada konsentrasi 8%. Pengaruh konsentrasi ekstrak yaitu semakin tinggi konsentrasi ekstrak maka semakin besar pula daya hambat ekstrak terhadap pertumbuhan bakteri <em>S</em>.<em> aureus, E</em>.<em> coli </em>dan<em> P</em>.<em> aeruginosa</em>.</p><p><strong>Antibacterial Evaluation of Extract Beehive (<em>Apis dorsata</em>) on Growth <em>Staphylococcus aureus</em>, <em>Escherichia coli</em> and <em>Pseudomonas aeruginosa</em></strong>. Bacterial infectious diseases are serious health problems. One of natural antibacterial that can be used to inhibit bacterial growth is honeycomb (propolis, honey bag, egg bag and pollen bag) containing secondary metabolite compounds such as flavonoids, tannins and phenolic acids. The purpose of this research is to know the antibacterial activity of honeycomb extract from each solvent used and to know the effect of honeycomb extract concentration on the growth of <em>S</em>.<em> aureus</em>, <em>E</em>. <em>coli</em> and <em>P</em>.<em> aeruginosa</em> bacteria. Antibacterial testing was performed by the method of paper disc diffusion with soaking time 1 hour then incubated for 3 x 24 hours. The results showed that antibacterial activity of methanol honeycomb extract had the highest activity in <em>E. coli</em> bacteria i.e., 3.8 mm at 8% concentration, ethyl acetate honey extract on <em>S. aureus</em> bacteria ie 3.72 mm at 8% concentration and n extract n-hexan honeycomb in <em>E. coli</em> bacteria that is 16,1 mm at 8% concentration. The higher extract concentration the greater the inhibitory activity of extract on the growth of <em>S</em>.<em> aureus</em>, <em>E. coli</em> and <em>P</em><em>.</em><em> aeruginosa</em> bacteria.</p>
Evaluation of Inflow Control Device Performance using Computational Fluid Dynamics
Authors: Miersma M. , Mahmoudi M. , Fattahpour V. , Li L. , Lange C. F. 
Published: February 2018

Abstract
In steam injection thermal recovery, it is essential to have a uniform flow to improve the recovery and to avoid the localized steam breakthrough which could lead to damage to well completion. In this paper, we propose three quantitative criteria to assess the performance of inflow control devices (ICD) based on computational fluid dynamics (CFD) modeling. The new performance criteria are exemplified in the evaluation of a few basic ICD designs.
To evaluate the response of the ICD to flow rate and fluid type, three new performance criteria, defined as (1) quadratic flow coefficient, (2) viscosity coefficient, and (3) erosion potential, are proposed and evaluated based on a set of CFD simulations. The first criterion measures the flow rate response and the ability of the ICD to restrict high velocity flow, the second quantifies the viscosity sensitivity, and the third predicts the potential for erosion in the device.
Four different liner deployed ICD designs, based on two passive design types (nozzle and channel) and one autonomous design type (Tesla flow diode), were analyzed using a rigorous CFD model. The model includes the surrounding slotted liner and inner tubing to identify any interactions of the ICD with the surrounding completion. The CFD model has been verified for grid and domain independence and it was applied to a range of flow rates representative of the field condition. In addition, simulations were run for a range of single-phase incompressible fluids with varying viscosities.
Using the newly proposed criteria, the ICDs were evaluated and compared. The comparison shows that, of these devices, the diode does the best job of restricting the flow at high flow speeds and low viscosities. At high viscosities, such as in the case of oil, the diode is the least restrictive device. Although the two straight nozzles tested are slightly worse at restricting the flow, they have the lowest erosion potential. Based on this comparison and the proposed criteria, the channel design performs poorly. At low viscosities it does not sufficiently restrict the flow, and at high viscosities it overly restricts the production of oil. It also has a high erosion potential, because of the steep entrance angle.
In this work, a new set of quantifiable criteria are defined and assessed that allow multiple aspects of different ICD designs to be compared simultaneously. Overall, these three criteria give a highly sensitive, quantitative means of comparing ICD designs. With these three criteria together, a more comprehensive comparison can be made in support of selection and improvement of ICDs.
Phase Behavior Modelling of Oils in Terms of SARA Fractions
Authors: Gutiérrez D. , Moore R. G. , Mehta S. A. , Ursenbach M. , Bernal A. 
Published: February 2018

Abstract
One of the key steps towards improving the predictability of air-injection-based processes relies on the development of accurate phase behavior models of the oil.
Historically, for in-situ combustion (ISC) in heavy oils and bitumens, phase behavior was often ignored, as the physical aspects of the process (e.g. distillation) were not considered to be as significant as the oxidation reactions. However, this step is important for several reasons. First, the compositional model should reflect the phase behaviour of the original fluids. Second, reaction rates are dependent on the concentration of the reactants, which in turn are affected by the volatility of the components. This is particularly important for lighter oils (but not unimportant for heavier oils) where the phase equilibrium between the liquid and vapour can have a significant impact on the flammability range for vapour phase combustion at given temperature and pressure conditions. Finally, for the case of lighter oils, a good phase behaviour model is required to capture the compositional effects of the resulting flue-gas drive.
This study presents a practical workflow to develop a phase behavior model in terms of SARA fractions (saturates, aromatics, resins and asphaltenes), which is aligned with the reaction modelling approach used in most kinetic models. The methodology requires conventional oil characterization (i.e. based on distillation cuts) and conventional phase behavior experiments (e.g. differential liberation), as well as oil characterization in terms of SARA fractions.
The first step of the method consists of splitting of the heaviest oil fraction (i.e. plus fraction), followed by the lumping of all single-carbon-number components, in such a way that the new oil characterization honours the SARA data available, such as composition, and physical properties of each fraction (e.g. molecular weight). In addition, the gas components (e.g. Methane) would be treated as additional components as necessary. The second step is to tune an equation of state (EoS), in terms of the SARA-based model, to match the relevant laboratory experiments. Finally, the tuned EoS would be used to export the equilibrium constants (K-value tables) to the thermal numerical simulator.
Different examples on the application of the phase behavior modelling workflow are presented and discussed in detail, for heavy and light oils. This work opens up opportunities to model the ISC process for any oil (i.e. light or heavy) by utilizing the currently available kinetic models, which in turn is an important step towards improving the predictability of ISC processes using reservoir simulation.
Generalized Approach to Predict k-Values of Hydrocarbon Solvent/Bitumen Mixtures
Authors: Azinfar Bahareh , Haddadnia Ali , Zirrahi Mohsen , Hassanzadeh Hassan , Abedi Jalal 
Published: February 2018

Abstract
A generalized model is presented to calculate the k-values of methane/bitumen, ethane/bitumen, propane/bitumen, and butane/bitumen systems. These data are required for phase behaviour modeling and simulation of solvent-aided bitumen recovery processes. The proposed model is evaluated by comparing the calculated results with the measured experimental k-values.
The proposed model provides generalized binary interaction parameters between each hydrocarbon solvent (methane, ethane, propane, and butane) and the defined components in bitumen and calculates the k-values of solvent/bitumen systems. Unlike the existing common approaches, experimental solubility data are not required to tune the model. The boiling point or carbon number distribution of bitumen or heavy oil obtained by simulated distillation (SimDist) test is the only required data to characterize and define the components of heavy oil or bitumen. The SimDist test is a very fast test and much less expensive than the common solubility measurements.
This model has been developed based on the experimental fractionation of bitumen. The Athabasca bitumen was experimentally fractioned to four bitumen cuts applying vacuum distillation method and the solubility of solvent in each bitumen cut were measured at wide ranges of temperature and pressure. The measured solubility data of methane, ethane, propane, and butane in each bitumen cut have been used to tune the PR-EoS and the generalized binary interaction parameter coefficients for each solvent and bitumen components have been found. To calculate the k-values of solvent/bitumen mixtures, the bitumen is defined as a mixture of n-alkanes based on simulated distillation results. The properties of n-alkanes have been assumed for each component. Employing the obtained binary interaction parameters in PR-EoS using experimental data of solvent/bitumen cut systems and considering the defined bitumen components as input to the proposed model, the k-values of solvent and any bitumen or heavy oil mixtures are calculated. The validity of the proposed model has been confirmed by calculating the k-values of methane, ethane, propane, and butane with two different bitumen samples with an average deviation of less than 3.0 %.
The proposed model predicts the k-values of methane/bitumen, ethane/bitumen, propane/bitumen, and butane/bitumen mixtures without requiring the time and cost intensive experimental PVT data for tuning. Providing the simulated distillation results of any bitumen or heavy oil samples, the k-values of hydrocarbon solvent/bitumen or heavy oil can be calculated in wide ranges of temperature and pressure. The outputs of this model can be directly used as k-values in simulation of solvent-aided thermal recovery processes.
Designing Surfactant-Polymer Processes for Heavy Oil Reservoirs: Case Studies
Authors: Rousseau D. , Bekri S. , Boujlel J. , Hocine S. , Degre G. 
Published: February 2018

Abstract
Whereas polymer flooding is now a proven method for heavy oil reservoirs, the use of surfactants is reported only in a limited number of cases and mostly in combination with alkali (ASP) to benefit from in-situ generated soaps. Operational issues such as scale formation, corrosion or logistics difficulties are often encountered. The objective of this work was to assess for the feasibility of alkaline-free surfactant-polymer (SP) processes for heavy oil reservoirs. Three "pseudo-synthetic" sandstone cases have been investigated for SP formulation design and performance evaluation through coreflood tests:
– 100 cP oil viscosity, 60°C, 800 mD and salinity 7.5 g/L TDS; – 1400 cP oil viscosity, 35°C, 2 D and salinity 20 g/L TDS; – 4500 cP oil viscosity, 50°C, 2-4 D and salinity 6.4 g/L TDS.
All experimental assays have been carried out on outcrop rock plugs but with dead oil samples from real reservoirs. SP formulations were successfully designed for the three cases with ultra-low IFT (&lt;10−2 mN/m) at the target salinities and with good solubilities. For the 1400 and 4500 cP cases, SP tertiary oil recovery coreflood tests were carried out and led to high recoveries, namely above 90% of post-polymer flooding ROIP. For the 1400 cP case, a salinity gradient method was proven successful to mitigate adsorption. For the 100 cP case, injections at and below the optimal salinity were carried out with good results in both situations. To enable these experimental assays, new protocols had to be developed to contend with the specificities of heavy oils such as very long equilibrium times and difficulties to determine the oil production in corefloods. These exploratory investigations demonstrate that alkaline-free SP processes are feasible for heavy oil reservoirs and that field operations can be prepared using proper laboratory methods.
Wormhole Stability Under Post Chops Conditions
Authors: Oldakowski K. , Sawatzky R. P. 
Published: February 2018

Abstract
The CHOPS process involves the growth of high permeability channels (wormholes) into the reservoir. The wormholes provide improved access to the reservoir, thereby substantially increasing oil production rates. Field evidence and laboratory experiments indicate that wormholes tend to persist as stable high-permeability flow channels throughout the duration of the CHOPS process.
The existence of wormholes in the reservoir needs to be taken into consideration in the design of post CHOPS recovery processes. One of the key issues is the stability of wormholes during the re-pressurization phase of any follow up process to CHOPS. For example, wormholes could remain as stable high permeability flow channels to deliver injected fluids into a reservoir or they could collapse to improve conformance for fluid injection.
This paper presents the results of experiments testing the stability of wormholes under conditions that could be destabilizing such as cold and hot water circulation, heating, and pressurization with hydrocarbon gases (e.g., methane, ethane). The experiments were performed in a triaxial cell, approximately 19 cm in diameter and 18 cm long, packed with water-wet sand and saturated with heavy oil. Wormholes were generated in the pack by injecting heavy (dead) oil into the cell at a sufficiently high rate to produce sand from the pack. Then, conditions that could be destabilizing to wormholes were applied to test their outcome.
Cold water flowing through the wormhole eroded its walls, eventually causing the pack to collapse after more than a week. The injection of hot water accelerated the process of erosion considerably. Heating the pack did not cause it to collapse, but the wall of the wormhole was destabilized to a limited extent in that the diameter of the wormhole increased by more than a factor of two. The heating reduced the viscosity of the heavy oil in the pack, causing the apparent strength of the sand to decrease. Pressurizing the sand pack with methane and then slowly depressurizing it did not destabilize the wormhole. However, pressurizing the pack with ethane caused the sand matrix surrounding the wormhole to collapse over a period of two weeks. As in the case of heating, dissolution of ethane into the heavy oil caused the apparent strength of the sand to decrease by reducing the viscosity of the heavy oil in the pack.
Although the confining pressure in these experiments was relatively low, the experimental cell did not allow for stress redistribution due to the deformation of the sand matrix, as would occur in the field. For this reason, the wormholes generated in the experiments were less stable than ones in the field. Consequently, the laboratory conditions that resulted in wormhole collapse should be regarded as a guide to the behaviour that would be expected in the field.