bluuebunny/crossref_metadata_2025_split huggingface dataset:
OPTIMAL METHODS FOR ELIMINATION OF OBSTRUCTIVE JAUNDICE WITH ADVANCED CANCER OF THE PANCREAS HEAD
Authors: Gevorkyan T. G. , Faynshteyn I. A. 
Published: June 2018

Purpose. Development and evaluation of the effectiveness of sound and safer methods of palliative surgery with obstructive jaundice advanced pancreatic head cancer.Patients and methods. The study included 272 patients with advanced pancreatic head cancer and the complication of this process in the form of mechanical jaundice, which had various volumes of bile-excreting procedures. Minimally invasive (141 patients) and laparotomic interventions (131 patients) were used to perform biliary decompression.Results. With mini-invasive techniques, there were significantly more postoperative complications than with open surgery. The number of early complications after open surgery for biliary excretion (9.2%) is less than after minimally invasive (37.6%), and this difference is determined by complications caused by the performed intervention (4.6% compared with 31.9%). Complications after surgical interventions in all cases were stopped conservatively, whereas after minimally invasive interventions, in order to eliminate complications, 1.4% of patients required repeated mini-invasive interventions.Conclusion. Survival analysis according to the particular bile decompression method showed the best indicators of overall 6, 9-month and one-year survival rate for all types of open surgical methods eliminate jaundice compared with minimally invasive techniques.
ASSOTIATION-GENETIC STUDY OF POLYMORPHISM G-105A SEPS1 GENE IN MALE INFERTILITY
Authors: Kul'chenko N. G. , Myandina G. I. , Alhedjoj Hasan 
Published: June 2018

About 30 million men in the world are infertile. Genetic factors are the cause of 15-30% of cases of pathospermia.Purpose. To study the influence of polymorphism G-105A (rs28665122) of SEPS1 gene on the development of pathospermia among men with infertility inMoscow region.Patients and methods. There were examined 138 men. All patients were divided on 2 groups: the first (n = 70) – patients with pathospermia, the second (control) – fertile men (n = 68). All patients underwent clinical examination: analysis of spermograms, determination of hormonal profile, ultrasound of scrotum organs. We performed a genetic analysis of peripheral blood leukocyte DNA in patients of both groups. All DNA samples were studied for the presence of polymorphism G-105A (rs28665122) SEPS1 gene using polymerase chain reaction methods and the analysis of restriction fragments length polymorphism (PCR-RFLP).Results. All patients of the first group suffered from severe infertility. Of these, 26 (37.14%) men had asthenozoospermia, 23 (32.85%) men with teratozoospermia, 21 (30.0%) azoospermia. A clinical study of patients of the first group did not reveal any serious deviations from the norm, so we were installed they idiopathic infertility. Our study of gene polymorphism SEPS1 showed that patients with pathospermia have allele -105А (genotypes GA+AA) a twice as often as in the control group of fertile men (48.57% и 27.94%, respectively, p < 0.001). Conclusion. Polymorphism G*-105A SEPS1* gene may beused for screening of infertility in men.
NFLUENCE OF BIOACOUSTIC STIMULATION OF THE RESPIRATORY SYSTEM OF SPORTSMEN ON LIFE-CAPACITY OF LUNGS
Authors: Erofeev G. G. 
Published: June 2018

Purpose. To study the influence of bioacoustic stimulation of the respiratory system in athletes on the value of vital capacity of the lungs.Materials and methods. For technical realization of bioacoustics stimulation of the respiratory system, a biotechnical system, containing a block of an acoustic interferometer, an interferometer control system, and a system for recording sound field parameters, was used. The study involved nine athletes test volunteers: men aged 19 to 31 years, a sport – skiing, a sports category – the first adult, who underwent a training using bioacoustics stimulation in the following way: three times for three minutes each exposure, with an interval between exposures equal to one minute. Before the beginning of each exposure, the medical staff conducted a survey of the athlete’s well-being, measurement of the heart rate and blood saturation with oxygen, and determination of the vital capacity of the lungs. During the exposure, a constant control of health, heart rate and blood saturation with oxygen was conducted, and measurements of the vital capacity of the lungs were carried out after each stimulating effect.Results. Eight of the nine volunteers increased the vital capacity of the lungs, according to subjective sensations, all volunteers noted a feeling of deeper breaths after exposure, a feeling of lightness of breath and absence of shortness of breath after training afterwards. Athletes who participated in earlier stages of the study noted that the effect of stimulation is pronounced in terms of subjective assessments of a feeling of lightness of breath, a greater depth of inspiration, a greater volume of breathing at once, and within 3 days after three-fold exposure during one session. Conclusion. The results of the study testify to the significant potential possibilities of bioacoustics stimulation of the respiratory system of athletes to increase the functional reserves of the body, determined by the increase in the vital capacity of the lungs. Important for the practice of sports medicine is that the increase in vital capacity of the lungs occurs after a one-day course of bioacoustics stimulation of the respiratory system, persists for 3 or more days after stimulation and is accompanied by subjective estimates of easier breathing.
A tradução do texto teatral: performances de uma poética
Authors: Ielpo Rodrigo 
Published: June 2018

Para que a tradução do texto de teatro não perca de vista suas especificidades, é preciso levar em conta todos os elementos de ordem cênica que devem atravessá-la. Essa operação acaba por evocar a condição iterável particularmente sensível nos textos teatrais, os quais devem colocar literalmente em cena o traço citacional que os mobiliza desde o princípio, permitindo, assim, que continuem a funcionar em tempos e espaços completamente distintos daquele em que a peça foi redigida. O objetivo desse artigo é pensar as formas como esse “gênero” de tradução, ao atualizar as potências performativas dos textos a partir da noção de teatralidade, acaba por ecoar uma dimensão ético-estética presente nos pressupostos de certa crítica descrita por Walter Benjamin em O conceito de Crítica de Arte no Romantismo Alemão.
Suriname: história, literatura e questões de tradução
Authors: Monteiro Julio Cesar Neves 
Published: June 2018

Ainda largamente desconhecida do público mundial, a literatura do nosso vizinho Suriname é uma agradável surpresa, uma vez vencidos os percalços para ter acesso a ela. Uma das razões a que se pode atribuir o fato de a literatura surinamesa permanecer um bem-guardado segredo é sua produção ocorrer em uma língua de menor difusão, o neerlandês, mas a isso somam-se outras questões. Muito conhecida na ex-metrópole, circula pouco em traduções mundo afora. Este artigo tem como objetivo lançar luz sobre a possibilidade de que se possa estabelecer um diálogo entre os sistemas literários brasileiro e surinamês por meio da tradução para o português brasileiro de, entre outras obras, romances históricos surinameses, em especial os que têm a diáspora como tema. O Brasil e o Suriname compartilham uma história de migrações forçadas e relatos sobre essas migrações perpassa o sistema literário de ambos os países. presume-se que o leitor brasileiro possa se interessar pela representação desses temas que lhe são tão familiares e que se disponha a ler literatura surinamesa traduzida para o português brasileiro.
Implicações linguísticas na teoria da tradução como compreensão de Steiner
Authors: Lataliza Naaman Mendes 
Published: June 2018

Em algumas teorias, o ato de traduzir vai além do enunciar numa outra língua o que foi enunciado numa língua fonte: acontece também no interior de uma língua. Jakobson (1959) é um dos nomes que toca nessa questão, propondo o que ele chama de tradução intralingual. Quem, no entanto, se aprofunda nessa problemática é George Steiner (1992), no seu livro Depois de Babel, em cujo primeiro capítulo, denominado A compreensão como tradução, há a exposição do fato de que, para que haja compreensão, é necessária a recriação do significado de maneira interpretativa, e, tendo a interpretação um resíduo privado, construído a partir de memórias, da identidade psicológica e somática, há uma proliferação de nuances de significados que tornam a expressão pura inadmissível. Assim, para o autor, a interpretação seria um processo de tradução intralingual. Partindo da ideia de que compreender é traduzir, o presente trabalho objetiva fazer um esboço de algumas teorias linguísticas que estão imbricadas no texto de Steiner (1992) explícita ou implicitamente. Ainda que o autor se valha majoritariamente de exemplos literários, há, em seu texto, uma argumentação alicerçada em teorias puramente linguísticas, por isso é interessante expô-las e mostrar como elas corroboram a tese desse autor.
Directional Control and Rathole Elimination While Underreaming Depleted Formations With a Rotary-Steerable System
Authors: Greenwood Jeremy A. 
Published: June 2018

Summary
An oil and gas operator in the Gulf of Mexico (GOM) planned to drill a deepwater well section in one run by concurrently drilling and enlarging a 12¼- to 14½-in. hole while deviating from 60 to 30° inclination and crossing expected depleted formations. At section total depth (TD), the rathole below the underreamer needed to be eliminated to help ensure successful cementing of the liner. A bottomhole assembly (BHA) was designed to allow achieving these objectives in one run, and the field results obtained with the system are described.
The first step in determining the best BHA design was to compile drilling experiences through the target formations and perform a review of all pertinent offset-well information. Weaker zones had been encountered in the 12¼ × 14½-in. section, and an at-bit reamer (ABR) had to be included in the BHA to allow the liner to be set on the bottom of the section, rather than leaving an 85- to 135-ft rathole. Because the ABR placement in the BHA is between the bit and the rotary-steerable-system (RSS) tool, it was important to ensure that directional control could be maintained in the section and make certain no interference existed between the ABR and the wellbore that could compromise control. Stabilization and placement of the underreamer were also crucial to ensure that the necessary directional performance was obtained without overstressing the BHA components, and modeling was performed to optimize the design. Hydraulics and torque-and-drag modeling ensured that the BHA design could drill the depleted zone without premature activation of either reamer.
The modeling and analysis of offset performance resulted in successfully drilling the section and opening the rathole in one run. The BHA was steered to the final desired angle, and reached the section TD without incident and at the desired rate of penetration (ROP). After the section TD was reached, the ABR successfully opened the 12¼-in. rathole to the desired 14 in., allowing the liner to be set 3 ft from the bottom. Normally, this type of operation would require a separate dedicated hole-opening run. Using the new design eliminated the additional trip and the time necessary to open the hole, which was estimated at 56 hours.
A BHA solution was developed through modeling that allowed the operator to not only maintain the steerability needed to achieve directional requirements with an ABR between the bit and the RSS while drilling depleted formations but also to concurrently perform underreaming.
Development of an UV-Vis Spectrophotometric Method for Accurate Determination of Aqueous Sulphides in Exotic Scale Studies
Authors: Alduailej Y. , Boak L. S. , Alharbi B. , Graham A. J. , Sorbie K. S. , Oduro H. , Alkhaldi M. , Alqathami S. 
Published: June 2018

Abstract
An analytical technique was developed to directly determine the concentration of aqueous sulphide in exotic scale studies. The technique is based on measuring the absorbance of sulphide samples in a copper reagent using an ultra-violet visible (UV-Vis) spectrophotometer. Calibration curves, generated using stock sodium sulphide solutions, were compared and validated against earlier reports in the literature.
The instantaneous reaction of a stirred (1000 rpm) sulphide solution and a copper reagent produces copper sulphide nano-particles, which turn the solution colour from light blue to brown. Increasing concentrations of sulphides give more intense shades of brown, resulting in increased absorbance values when analyzed by UV-VIS at a wavelength of λ = 480 nm. The absorbance readings are proportional to the sulphide concentrations in the samples, thus generating a calibration curve.
The repeatability of these absorbance measurements has an average standard deviation of 1.9% and a correlation coefficient (R2) of 0.9998 over a range of 7-386 mg/L sulphide species in synthetic brines. The determination of sulphide concentrations from absorbance readings using a 2nd order polynomial equation reveals average variations of ±1.2 and ±9.67 mg/L over the ranges of 7-70 and 105-386 mg/L, respectively. Furthermore, this technique was able to determine excess sulphide concentrations in solutions containing sulphide scale particles, as long as only clear filtered samples were analyzed. An alternative copper chloride reagent was used to prevent the formation of sulphate scale when barium or strontium ions were present in the brine being examined.
Comparing the results from the new detection method against the currently used technique reveals higher accuracy and practicality for the straightforward UV-VIS technique over the ICP analysis of quenched solutions. The new detection method allowed for the determination of any oxidative effects on the sulphide solutions, which is not identifiable using ICP.
Study of Carbonatic Scale in Completion Tools Through Modeling and Simulation Techniques
Authors: Maciel R. S. , Maciel F. S. , Pereira F. A. , Ribeiro D. C. , Aldeia W. , Martins A. L. , Bloch M. , Ferreira M. V. 
Published: June 2018

Abstract
Scale prediction in downhole scenarios is somewhat complex due to the large range of variables that drive inorganic precipitation. While the reservoir fluid flow ascendant into the wellbore it passes through many different completion equipments such as downhole valves. In the scope of oilwell completion design, a typical wellbore configuration takes into account two or three intervals, so a selective completion is required. In this way, Sliding Sleeve Valves (SSV) are normally employed together with packers to allow the production selectivity. Despite the positive aspects of this arrangement, the turbulence, the change in the flow trajectory into the valves and the considerable pressure drop can generate a friendly environment for the occurrence of calcium carbonate (CaCO3) scale. The pressure drop in this tool induces the flash liberation of CO2 from the aqueous solution and consequently, the chemical equilibrium, which controls the precipitation of CaCO3, is displaced towards the direction of precipitation of this solid in the flowing stream. Through the computational fluid dynamics technique (CFD), this work aims to study the effect of geometric variables of a generic downhole valve and the effect of the influx flow rate and fluid properties on the minimization of the overall pressure differential in the valve. Through the discrete phase modeling (DPM), the effect of the flow intensity on the transport of the solids to the internal adhesion surfaces is verified, and which of these surfaces are more favorable to the scaling phenomenon. By comparative analysis, it is shown that the volumetric influx rate is the most significant factor in the pressure drop (response variable). For the geometric factors, the effect of the number of connections between the annular outer region and internal tube presented a greater relevance compared to the chamfer angulation effect considered at the inlet of these connections.
Unconventional Horizontal Scale Squeezes: Lessons Learned Drive Continued Development and Improved Cost Savings
Authors: Eagle L. M. , Spicka K. J. , Fidoe J. , Jordan M. M. 
Published: June 2018

Abstract
It has been proven that scale squeezes can be conducted effectively in the unconventional, horizontal fractured wells in the shale reservoir of the Bakken when using an optimal scale squeeze chemistry. Previous work has discussed inhibitor selection and performance testing along with early case histories and modeling work. This paper discusses new case histories and Place-iT modeling results based on several procedural variations including a range of overflush volumes in the squeeze treatment procedure and the inclusion of acid cleanouts.
Novel, reduced-volume squeeze designs have successfully protected wells from scale deposition while limiting the direct and indirect costs associated with extra placement water. For unconventional shale wells in the Bakken, where produced water is typically very high in TDS and TSS, fresh water is most commonly used to execute squeezes. Reducing the total water volume reduces the costs of purchasing, transporting and storing fresh water. The amount of time and cost to pump the job is decreased. Less time and money is spent lifting the placement water, and consequently, there is less deferred production. In addition, in unconventional production acid treatments are commonly carried out in isolation to maintain production. In this work, applying acidizing stages at the front of the squeeze procedures, provides a novel "squimulation" process to fractured reservoir scale control treatments.
For these unconventional horizontal wells, the use of larger water volumes—either several times full wellbore volume and/or several times daily water production—has not been shown to improve the longevity or cost-effectiveness of squeeze jobs. Contrary to conventional well applications modeled with Darcy flow, it appears diffusion is the more applicable mechanism for scale inhibitor transport in fractured shale wells. This mechanism is consistent with a reduced dependence on water volume deployed in the treatments.
The lessons learned from the unconventional horizontal scale squeezes conducted in the Bakken have resulted in enhanced production and cost savings. There are significant implications for the industry as other key unconventional regions in the U.S. and around the world are looking into scale squeezes as an option for scale control.
Recent Advances in Scale Prediction, Approach, and Limitations
Authors: Kan Amy T. , Dai Joey Zhaoyi , Deng Guannan , Ruan Gedeng , Li Wei , Harouaka Khadouja , Lu Yi-Tsung , Wang Xin , Zhao Yue , Tomson Mason B. 
Published: June 2018

Abstract
Numerous saturation indices and computer algorithms have been developed to determine if, when, and where scale will form, but scale prediction can still be challenging since the predictions from different models often differ significantly at extreme conditions. Furthermore, there is a great need to accurately interpret the partitioning of H2O, CO2, and H2S in different phases, and the speciations of CO2 and H2S. This presentation is to summarize current developments in the Equation of State and the Pitzer models to accurately model the partitioning of H2O, CO2, and H2S in hydrocarbon/aqueous phases and the aqueous ion activities at ultra high temperature, pressure and mixed electrolytes conditions. The equations derived from the Pitzer ion-interaction theory have been parametrized by regression of over 10,000 experimental data from publications in the last 170+ years using a genetic algorithm on the super computer, DAVinCI. With this new model, the 95% confidence intervals of the estimation errors for solution density are within 4*10'4 g/cm3. The relative errors of CO2 solubility prediction are within 0.75%. The estimation errors of the saturation index mean values for calcite, barite, gypsum, anhydrite, and celestite are within ± 0.1, and that for halite is within ± 0.01, most of which are within experimental uncertainties. This model accurately defines the pH of the production tubing at various temperature and pressure regimes and the risk of H2S exposure and corrosion. The developed model is able to predict the density of soluble chloride and sulfate salt solutions within ±0.1% relative error. The ability to accurately predict the density of a given solution at temperature and pressure allows one to deduce when freshwater breakthrough will occur. Lastly, accurate predictions can only be reliable with accurate data input. The need to improve accuracy of scale prediction with quality data will also be discussed.
Scale Deposition and Hydrodynamics - Benchtop to Pilot Rig
Authors: Goodwin Neil , May Mark , Nichols David , Graham Gordon 
Published: June 2018

Abstract
Scale deposition in oilfield production systems is influenced by thermodynamic supersaturation and kinetics, but also by hydrodynamic effects such as surface shear stress and turbulence. Results from experimental work investigating the impact of these hydrodynamic factors on scale location and correlating them to field flow regimes are presented.
Laboratory tests have been conducted using both a benchtop jet impingement method and large-scale, high flow rate "pilot rig" apparatus. Both of these systems result in high shear stress conditions and can simulate hydrodynamic regimes representative of those expected in devices such as inflow control valves, inflow control devices, and sand control screens. The pilot rig is able to reproduce field-representative flow rates and fluid flow dynamics through full-size test pieces containing nozzles and restrictions.
The results of this work demonstrate that the hydrodynamic regime has a significant influence on scale deposition. Increased levels of surface shear stress and turbulence result in a greater potential for scale formation than low shear, laminar flow conditions. This is particularly apparent in systems which are mildly supersaturated. The location of scale deposits was found to correlate with local shear stress and the pilot rig tests confirmed field observations that zones experiencing the highest level of shear are not necessarily those with the greatest deposit; the induced scale may deposit downstream in areas of lower surface shear. Additionally, the presence of these high shear locations upstream of the lower shear regime may lead to scaling in the lower shear region which would otherwise not be experienced. Supportive Computational Fluid Dynamic modelling of fluid flow within the pilot rig system correlated with the experimental findings is also described.
This work allows a greater understanding of the hydrodynamic factors, in particular surface shear stress, influence oilfield scale deposition and has demonstrated the utility of both benchtop and pilot-scale methods for testing under appropriate conditions.