bluuebunny/crossref_metadata_2025 huggingface dataset:
GÊNESE E EVOLUÇÃO DE TURFEIRAS NAS SUPERFÍCIES GEOMÓRFICAS DA SERRA DO ESPINHAÇO MERIDIONAL – MG
Authors: Silva Márcio Luiz , Silva Alexandre Christofaro
Published: April 2017

A Serra do Espinhaço Meridional – SdEM possui litologias predominantemente quartzíticas e é caracterizada por apresentar áreas dissecadas entremeadas a superfícies de aplainamento em diferentes altitudes, onde, nas depressões, ocorrem as turfeiras. Essas superfícies de aplainamentos são resultado de uma sucessão de eventos denudacionais e deposicionais que compartimentou o relevo, ao longo da evolução geodinâmica da Serra. O objetivo desse trabalho foi mapear as turfeiras da porção setentrional da serra e discutir a gênese e evolução desses pedoambientes nas superfícies geomórficas da Serra do Espinhaço Meridional. A determinação da área e mapeamento das turfeiras foi realizada por meio de trabalhos de campo, análises de imagens e de fotografias aéreas. Com o auxílio do vibro-testemunhador coletou-se testemunhos em oito turfeiras. Amostras para datações e caracterização do ciclo fotossintético da cobertura vegetal que colonizou cronologicamente as áreas foram coletadas em diferentes profundidades, para determinação dos isótopos de carbono (δ13C e 14C). A porção norte da SdEM ocupa uma área de 1.180.109,00 ha, onde foram mapeados 14.287,55 ha de turfeiras, o que representa 1,2% da área total. Nas turfeiras predominam os estágios de decomposição avançado (sáprico), seguido do intermediário (hêmico). Quatro níveis de superfícies geomórficas foram identificados em toda a extensão da SdEM: Superfície I (S1), Superfície II (S2), Superfície III (S3) e Superfície IV (S4). Considerando a altimetria como principal fator, a S1 foi cronocorrelacionada com a Superfície Pós-Gondwana e a S2 cronocorrelacionou-se com a Superfície Sul-Americana. A Superfície III (S3) teve correspondência com a Superfície Sul-Americana I e a Superfície IV (S4), por sua vez, com a Superfície Sul-Americana II. A maioria das turfeiras, desenvolvidas no Quaternário, entre o Pleistoceno e Holoceno, se formaram sobre a Superfície Pós-Gondwana (S1) e na Superfície Sul-Americana (S2), em níveis altimétricos que variam entre 1.100 a 1.400 m. O predomínio de plantas com ciclos fotossintéticos CAM e C3 demonstraram a colonização da SdEM por espécies como bromélia, cactos e algumas euphorbiaceae, típicos de campo rupestre e por árvores e arbustos, ao longo da transição Pleistoceno-Holoceno, reflexos de mudanças ambientais locais e regionais ocorridas no Quaternário, possivelmente associadas a paleoclimas.
Surveillance of Mosquitoes for Zika Virus in Westchester County, New York
Authors: Schilke Randolph Earl
Published: April 2017

In 2015 in Brazil, Zika virus showed features of geographic expansion and potentially increased virulence. In 2016, New York State issued emergency regulations after the World Health Organization declared Zika virus a Public Health Emergency of International Concern. In this study, mosquito surveillance was conducted in Westchester County, New York, to identify Zika virus and other arboviruses. Twenty trap sites were used for surveillance of Aedes albopictus mosquitoes, the Zika virus vector. The Westchester County Department of Health performed testing for Zika, West Nile, Eastern equine encephalitis, and other flaviviruses on 369 batches comprising 8,891 mosquitoes. Aedes albopictus mosquitoes were identified in Nassau, Rockland, Suffolk, Westchester, and New York City. Despite the increased capacity for specimen analysis, Zika virus was not detected. This study provides the first evidence of appropriate Zika virus surveillance. However, the results do not allow determination of the potential mechanism of local vector-to-human transmission of Zika virus among Aedes albopictus mosquitoes. This study adds to the evidence regarding the distribution, emergence, and trapping capabilities of potential Zika virus vectors.
Development of a Laser Triangulation Displacement Probe with Laser Beam Pointing Control
Authors: Yang Hongwei , Tao Wei , Zhang Zhengqi , Zhao Siwei , Yin Xiaoqia , Zhao Hui
Published: April 2017

Directional dithering of a laser beam potentially limits the detection accuracy of a laser triangulation displacement probe. A theoretical analysis indicates that the measurement accuracy will linearly decrease as the laser dithering angle increases. To suppress laser dithering, a laser triangulation displacement probe with laser beam pointing control, which consists of a collimated red laser, a laser beam pointing control setup, a receiver lens, and a charge-coupled device, is proposed in this paper. The laser beam pointing control setup is inserted into the source laser beam and the measured object and can separate the source laser beam into two symmetrical laser beams. Hence, at the angle at which the source laser beam dithers, the positional averages of the two laser spots are equal and opposite. Moreover, a laser dithering compensation algorithm is used to maintain a stable average of the positions of the two spots on the imaging side. Experimental results indicate that with laser beam pointing control, the standard variance of the fitting error decreases from 0.3531 to 0.0100, the repeatability accuracy can be decreased from ±7mm to ±5 μm, and the nonlinear error can be reduced from ±6 %FS to ±0.16 %FS.
Assessing Landsat Fractional Ground-Cover Time Series across Australia's Arid Rangelands: Separating Grazing Impacts from Climate Variability
Authors: Barnetson Jason , Phinn Stuart , Scarth Peter , Denham Robert
Published: April 2017

Suitable measures of grazing impacts on ground cover, that enable separation of the effects of climatic variations, are needed to inform land managers and policy makers across the arid rangelands of the Northern Territory of Australia. This work developed and tested a time-series, change-point detection method for application to time series of vegetation fractional cover derived from Landsat data to identify irregular and episodic ground-cover growth cycles. These cycles were classified to distinguish grazing impacts from that of climate variability. A measure of grazing impact was developed using a multivariate technique to quantify the rate and degree of ground cover change. The method was successful in detecting both long term (> 3 years) and short term (< 3 years) growth cycles. Growth cycle detection was assessed against rainfall surplus measures indicating a relationship with high rainfall periods. Ground cover change associated with grazing impacts was also assessed against field measurements of ground cover indicating a relationship between both field and remotely sensed ground cover. Cause and effects between grazing practices and ground cover resilience can now be explored in isolation to climatic drivers. This is important to the long term balance between ground cover utilisation and overall landscape function and resilience.
Valproic Acid Induces Endocytosis-Mediated Doxorubicin Internalization and Shows Synergistic Anti-Proliferation Effects in Hepatocellular Carcinoma Cells
Authors: Saha Subbroto Kumar , Yin Yingfu , Kim Kyeongseok , Yang Gwang-Mo , Abdal Dayem Ahmed , Choi Hye Yeon , Cho Ssang-goo
Published: April 2017

We evaluated the mono- and combination-therapy effects of valproic acid (VPA) and doxorubicin (DOX) in hepatocellular carcinoma (HCC) and identified a specific and efficient, synergistic anti-proliferative effect of the VPA and DOX combination in HCC cells, especially HepG2 cells; this effect was not apparent in MIHA cells, a normal hepatocyte cell line. The calculation of the coefficient of drug interaction confirmed the significant synergistic effect of the combination treatment. Concurrently, the synergistic apoptotic cell death caused by the VPA and DOX combination treatment was confirmed by Hoechst nuclear staining and western blot analysis of caspase-3 and poly (ADP-ribose) polymerase (PARP) activation. Co-treatment with VPA and DOX enhanced reactive oxygen species (ROS) generation and autophagy, which were clearly attenuated by ROS and autophagy inhibitors, respectively. Furthermore, as an indication of the mechanism underlying the synergistic effect, we observed that DOX internalization, which was induced in the VPA and DOX combination-treated group, occurred via by the caveolae-mediated endocytosis pathway. Taken together, our study uncovered the potential effect of the VPA and DOX combination treatment with regard to cell death, including induction of cellular ROS, autophagy, and the caveolae-mediated endocytosis pathway. Therefore, these results present novel implications in drug delivery research for the treatment of HCC.
SEJARAH SOSIAL HADIS NABI DI YOGYAKARTA (Studi Kasus Hadis Aqiqah:Era Pra dan Pasca Reformasi)
Authors: Imron Ali
Published: April 2017

Sejarah sosial hadis Nabi di Yogyakarta, khususnya hadis aqiqah dari era pra hingga pascareformasi dewasa ini, mengalami perkembangan yang berkesinambungan. Meski sejak era kerajaan Mataram narasi tentang aqiqah sudah disinggung dalam naskah jawa yang ditulis oleh Raden Tumenggung Cakraningrat (Patih Danureja VI) sekitar tahun 1892 dengan judul Kitab Anyaritakaken Penggawé Butuhaning Manusya Mungguhing Sarak, namun wacana aqiqah hanya berkembang di lingkungan keraton. Masyarakat awam masih belum banyak tahu. Hal ini terus terjadi pada era Orde Lama maupun Orde Baru. Hingga setelah reformasi bergulir, masyarakat mendapatkan informasikeagamaan dengan mudah, termasuk tentang syariat aqiqah. Masyarakat Yogyakarta pun mulai mengenal, melaksanakan, dan mengembangkannya dalam sesbuah tradisi. Aqiqah melalui proses akulturasi telah menjadi budaya Yogyakarta sejak terbitnya Perda Provinsi DIY No. Nomor 4 Tahun 2011TentangTata Nilai Budaya Yogyakarta secara resmi memasukkan upacara aqiqah (kekahan) sebagai salah satu budaya Yogyakarta. Aqiqah pun terus berkembang hingga menjadi bisnis. Di sini hadis aqiqah di Yogyakarta bukan hanya sekedar memebentuk sebuah sistem kebudayaan, tetapi juga menginspirasi lahir dan berkembangnya bisnis-bisnis ekonomi.
Metode Tarjih dalam Kajian Hadis
Authors: Atabik Ahmad
Published: April 2017

Artikel ini menjelaskan tentang metode tarjih dalam hadis Nabi. Tarjih dilakukan apabila terdapat beberapa nash yang saling bertentangan (ta’arudl). Ta’arudl dapat terjadi diantara nash-nash (ayat ataupun hadis), atau antara qiyas dengan qiyas. Melakukan tarjih pada hadis berarti melakukan pengunggulan kepada sesuatu yang disandarkan kepada Rasulillah Saw. pentarjihan bisa dilakukan dengan berbagai cara (metode). Cara-cara tersebut tergantung pada kajian dan ijtihad para mujtahid. Pada dasarnya, banyak cara untuk mentarjih suatu hadis yang nampak bertentangan. Namun, artikel ini hanya membatasi pada empat hal yang berkaitan dengan unsur-unsur hadis, yaitu: Pertama, tarjih dari segi sanad dan rawi; kedua, tarjih dari segi matan; ketiga, tarjih dari segi hukum atau kandungan hukum (madlul); keempat, tarjih dengan menggunakan faktor (dalil) lain di luar nash
Factores socioeconómicos asociados con la compra ilegal de productos de tabaco en Panamá
Authors: Herrera-Ballesteros Víctor H , Zúñiga Julio , Moreno Ilais , Gómez Beatriz , Roa-Rodríguez Reina
Published: April 2017

Objetivo. Caracterizar la compra ilegal de productos derivados del tabaco y su asociación con variables socio­demográficas y socioeconómicas. Material y métodos. La fuente de datos es la Encuesta Mundial de Tabaco en Adultos de 2013. Se caracterizó la compra ilícita mediante variables sociodemográficas (SOD) y socioeconómicas (SES). Se utilizaron modelos de regresión logística. Resultados. Se encontraron asociaciones de las variables SOD y SES con compra ilegal, particularmente en hombres; grupo etario de 15 a 39 años, educación no formal, empleado de gobierno e inactivos, área urbana, fumador diario y en el primer quintil de ingresos. Conclusiones. Las variables SOD y SES influyen en la compra ilícita. Es importante la vigilancia del comercio ilícito en el segmento minorista y la aplicación efectiva de las normas vigentes.
Exposición a la publicidad del tabaco en los puntos de venta en Argentina. Evidencias de la Encuesta Nacional de Factores de Riesgo 2013
Authors: Morello Paola , Ondarsuhu Dolores , Galante Mariana , O'Donnell Victoria , Konfino Jonatan
Published: April 2017

Objetivo. Describir las características de la población que refiere haber acudido a los puntos de venta (PV) de tabaco en relación con la percepción de la publicidad en Argentina. Material y métodos. Se analizaron datos de la Encuesta Nacional de Factores de Riesgo de 2013. Resultados. Se incluyeron 31 167 encuestados que acudieron a comercios donde venden cigarrillos en los últimos 30 días. De éstos, 54.1% dijo haber visto publicidad de cigarrillos. Los varones (RM=1.2) y los fumadores actuales (RM=1.9 vs. no fumador) tuvieron más posibilidad de percibirla. Aquéllos que refirieron estar expuestos al humo de tabaco en bares y restaurantes (RM= 1.2) tuvieron más posibilidad de ver publicidad de ta­baco en los puntos de venta. Hubo un gradiente en relación con la edad: los jóvenes de 18 a 24 fueron más susceptibles a referir exposición (RM=2.8 vs >65 años). Entre los fumadores, aquéllos que percibieron publicidad refirieron con mayor frecuencia haber intentado dejar de fumar en el último año. Conclusiones. Es importante que la regulación de la pu­blicidad en los PV sea más estricta para limitar la exposición a la publicidad, particularmente en los jóvenes.
Tabaquismo en Costa Rica: susceptibilidad, consumo y dependencia
Authors: Fonseca-Chaves Sandra , Méndez-Muñoz Jesús , Bejarano-Orozco Julio , Guerrero-López Carlos Manuel , Reynales-Shigematsu Luz Myriam
Published: April 2017

Objetivo. Identificar elementos asociados con el taba­quismo, la susceptibilidad y la adicción en jóvenes de 13 a 15 años, para determinar condiciones de riesgo y posibles intervenciones desde las políticas sobre tabaco en Costa Rica. Material y métodos. Se utilizó información de las cuatro rondas de la Global Youth Tobacco Survey (GYTS) Costa Rica, con un tamaño muestral de 11 540 jóvenes colegiales. Se estimaron indicadores de interés y modelos de regresión logística para el consumo de tabaco, la susceptibilidad y la adicción. Resultados. La prevalencia de consumo actual dis­minuyó significativamente a lo largo de los 14 años del estudio (17.3% en 1999 y 5.0% en 2013) y también, aunque en menor intensidad, en el índice de susceptibilidad hacia el fumado (19.3% en 1999 y 12.4% en 2013). La proporción de jóvenes que presentan adicción ha mostrado un aumento importante en el mismo periodo. Conclusiones. Las condiciones que han favorecido la importante reducción en la prevalencia de consumo, y en menor medida de la susceptibilidad, deben mantenerse y profundizarse para lograr el cumplimiento pleno de las medidas del programa MPower.
Impacto económico y sanitario del control prenatal en embarazadas afiliadas al régimen subsidiado en Colombia durante 2014
Authors: Gomez de la Rosa Fernando , Marrugo-Arnedo Carlos Alberto , Florez-Tanus Álvaro , López-Pájaro Keity , Mazenett-Granados Enrique , Orozco-Africano Julio , Alvis-Guzmán Nelson
Published: April 2017

Objetivo. Analizar el impacto sanitario y económico del control prenatal (CPN) en mujeres de hogares pobres. Material y métodos. Se tomó una muestra aleatoria de 9 244 mujeres embarazadas (población= 25 000). Se estimó la incidencia de mortalidad materna, los costos directos de atención y la diferencia de medias y proporciones. Los costos fueron estimados en dólares americanos (USD) de 2014, con perspectiva del tercer pagador. Resultados. El 75%de las mujeres viven en zonas urbanas. La media de edad fue de 23 años (IC95%: 23.5-23.8). El 87.5% asistió al menos a una cita de CPN. El costo medio de partos con CPN fue de USD$ 609.1 (IC95%: 581-632.7). Sin CPN fue de USD $857.8 (IC95%: 774.7-923.8). Los costos se incrementan 32% (IC95% 27.1-41) sin CPN. Conclusión. El CPN es una intervención eficiente y efectiva para la gestión del riesgo de la salud materna.
Monitoring Caribbean tobacco use: baseline adolescent smoking prevalence and regional disparities
Authors: Hambleton Ian R , Jeyaseelan Selvi M , Howitt Christina , Hennis Anselm J
Published: April 2017

Objetivo. Proveer un punto base de referencia sobre el uso de tabaco entre adolescentes de los países del Caribe antes de la implementación a nivel nacional del Convenio Marco para el Control de Tabaco (CMCT OMS). Material y métodos. Mediante la utilización de datos procedentes de la Encuesta Mundial de Tabaquismo en Jóvenes (EMTJ), obtenidos entre los años 2000 y 2008, se presenta la prevalencia del consumo de tabaco, el cambio obtenido en cinco años y las disparidades sobre el uso del tabaco entre los adolescentes (probaron el tabaco, fumadores actuales). Resultados. En el Caribe, la prevalencia de personas que han fumado en algún momento disminuyó de 33.3 a 29.0% y en nueve de 14 países se reportó un descenso en los últimos cinco años. Por otro lado, hubo un descenso en la prevalencia de fumadores actuales de 12.1 a 11.7% y en ocho de 14 países reportaron una disminución del consumo actual de tabaco fumado en los últimos cinco años. Las diferencias entre países en la prevalencia de los adolescentes que probaron tabaco en algún momento disminuyeron, sin embargo, hubo pocos cambios en la prevalencia de fumadores actuales. Conclusión. Este resumen regional sobre el consumo de tabaco proporciona unas estimaciones de referencia sobre el consumo de tabaco en adolescentes, así como sobre las diferencias entre los diferentes países en el periodo de tiempo anterior a la implementación del MPOWER. La implementación de nuevas rondas de la EMTJ se podrá utilizar para monitorear el éxito de la aplicación del paquete MPOWER.
Smokefree implementation in Colombia: Monitoring, outside funding, and business support
Authors: Uang Randy , Crosbie Eric , Glantz Stanton A
Published: April 2017

Objective. To analyze successful national smokefree policy implementation in Colombia, a middle income country. Materials and methods. Key informants at the national and local levels were interviewed and news sources and government ministry resolutions were reviewed. Results.Colombia’s Ministry of Health coordinated local implementation practices, which were strongest in larger cities with supportive leadership. Nongovernmental organizations provided technical assistance and highlighted noncompliance. Organizations outside Colombia funded some of these efforts. The bar owners’ association provided concerted education campaigns. Tobacco interests did not openly challenge implementation. Conclusions. Health organization monitoring, external funding, and hospitality industry support contributed to effective implementation, and could be cultivated in other low and middle income countries.
Mitigation of Mineral Scale Deposition in Well-Bore and Flow Lines with Eco Friendly and Less Aggressive Chemical
Authors: Siddiqui M. A. , Al-Othman M. R. , Al-Houti N. B. , Aloun S. , Al-Matar B. S. , Stanitzek T. , Wolf C. de , Iwenjora G. N.
Published: April 2017

With the onset of water production, mineral scale deposition appears in the oil and gas wells. The scale deposition in wellbores and flow lines is a universal challenge that has to be addressed with technical and economical effectiveness. Efforts are ongoing to effectively inhibit the scales or remove them through chemical or mechanical means.

Kuwait Oil Company is planning to improve the production to 4.0 MM BOPD by the year 2020. In this pursuit, all the possible efforts are made to increase production including application of new technology in drilling, completion, well production and facilities. One of the key aspects of production improvement from individual wells is to avoid any obstruction in the wellbore, wellhead and flow lines that might affect the smooth flow of hydrocarbons. This includes the augmented steps on eliminating mineral deposition from wellbore and flow lines.

The wells are suffering from frequent scale deposition in wellbore and flow lines. Usually these problems are mitigated by using strong acid. However, due to maturing of field the wells are generally completed with ESPs. When acids like HCl are used, these ESPs are corroded severely adding extra cost of workover and production loss. This challenge is driving the operators to use less aggressive chemicals that remain environmentally friendly and can maintain the integrity of submersible pumps, metallurgy of the flow lines and other components.

To meet this challenge, various chemicals were evaluated through laboratory tests and case histories. The chemical composed of Glutamic acid was selected for the first pilot. The pieces of tubular and other well components suffering from scale deposition were tested in the lab and the results were found to be highly encouraging. Based on this a pilot campaign was initiated with a batch of eight wells to treat wellbore and flow lines. All the treatments were found highly successful. Due to this treatment, the daily production has been improved to 5,000 BOPD without any extra activity such as replacement of ESP or flow line tubing due to corrosion.

The paper presents the technology evaluation process, lab testing and field trial results.
Non-Steady Well-Testing Interpretation Model and Analytical Solution for Circularly Partially Penetrating Wells
Authors: Libing Fu , Zifei Fan , Qingying Hou , Jun Ni , Lun Zhao
Published: April 2017

The effect of bottom-hole pressure and formation pressure due to a partially penetrating well (PPW) is different from that for an open hole well. In order to analyze the effect of imperfection on pressure response type curves, this paper presents a 3D symmetry porous flow model for circularly partially penetrating wells. Laplace transform and Fourier transform and Bessel functions are applied to obtain the analytical solution of the model. The pressure response and pressure distribution are obtained and the influence on flow regime surrounding the well and pressure response caused by partial penetration are analyzed. Research results show that when the imperfect area tends to zero, the solution of the model can be reduced to the traditional model of the perfect wells presented by Theis, demonstrating the correctness of the solution. The early-time pressure is significantly lower than the case of complete well. The pressure difference between a partially penetrating well and a completely penetrating well decreases with time increasing. Without considering the variation of spatial distribution of flow field due to imperfect well it may bring about errors of formation parameters calculated by perfect well model. Those conclusions improve the seepage model and provide theoretical guidance for the transient pressure data interpretation, formation parameters calculation and productivity prediction of partially penetrating wells. The presented research content furthers the theory of well test analysis, and builds theoretical foundation for the technologies of well testing interpretation and reservoir numerical simulation.
Next-Generation Displacement Fluids for Enhanced Oil Recovery
Authors: Yegin Cengiz , Singh B. P. , Zhang Ming , Biopharm Frontida , Balaji Karthik , Suhag Anuj , Ranjith Rahul , Peksaglam Zumra , Wijaya Zein , Putra Dike , Anggraini Henny , Temizel Cenk
Published: April 2017

Multiple analysis has indicated that over 50% of the oil production in the next 20-25 years is going to be produced through enhanced recovery procedures including polymer flooding. The heuristics for polymer flooding says that it is feasible to apply polymer flooding in reservoirs having oil viscosities in the range of 10 to 150 mPa.s. The main factor limiting this heuristic limit for polymer floods is that the injected water viscosity required for higher mobility ratio leads to pumping inefficiencies and low polymer injectivity rates. In this paper, we suggest a supramolecule based on the complexation of a long-chain amino-amide and maleic acid which can adjust its viscosity values reversibly to overcome the heuristic problem related to polymer floods.

The concept is fundamentally based on the fact the supramolecule system which is injected in the reservoir will initially be maintained at a low viscosity and on application of external pH stimuli will increase in viscosity values prior to contact with oil. Our laboratory studies indicate that such a system is also tolerant to high temperatures and salinities

Popular polymer systems used floe EOR purposes on experiencing extreme shear stresses and temperature break-up and degrade, however the supramolecule system dissemble and reassemble making the supramolecular system "healable" in a manner. The supramolecular systems can also adapt to confining environments, for example, on flow through narrow channels, the supramolecules undergo molecular scission.

The supramolecules proposed could be used for viscous oil in thin oil sand zones, permafrost and other environmentally constraining systems. This paper primarily focusses, on the development and properties of a novel supramolecular system which has adjustable viscosities and interfacial properties and can be resistant to high temperatures and salinities. This Supramolecular system can significantly improve the feasibility and cost-effectiveness of a polymer flood process and can be utilized universally.
Technical and Economic Evaluation of EOR Technology in Low-Oil-Price Period a New Polymerflooding Case Study From China
Authors: Wu Xingcai , Zhang Jichang , Liang Wuquan , Xu Hanbing , Wang Qiang , Xiong Chunming , Ren Tieying , Zhang Liang , Bai Baojun , Ye Yinzhu , Tian Xiaoyan
Published: April 2017

It is generally thought that EOR technology costs much, so the budget for EOR in low oil price period is inhibited. For further recogonize the issue, the paper conducted a follow-up technical and economic evaluation for a EOR project of high water cut mature oil field.

LHSC is a multiple layer high pour point reservoir with severe uneven sweeping problem. The water cut is up to 95.3%. The new polymerflooding (NPF) application area is composed of 10 injection wells and 21 production wells. The injection anount was designed as 0.3 PV, and it was composed of the main slug of a novel paticle type polymer SMG and the pre slug of volume swellable particle PPG carried by polymer weak gel. During the injection process, the slug parameteres such as SMG diameter were adjusted. The numerical simulation model and economic analysis model were built up. The technical and economical competency of the project evaluated under different oil price.

From December 21, 2010 to December 31, 2016, the total EOR slug injection amount was 0.29 PV. Among the 21 producers, 19 producers obtained good effect of oil rate increase and water cut decrease. The daily oil rate was increased from 27.0 t to 58.5 t for the highest, and the water cut was decreased from 95.3% to 91.1%. The cumulative oil incremental was 3.2×104t. Numerical simulation results showed that by the end of the project, the cumulative oil incremental would be 4.35×104t, and the recovery incremental would be 4.9%. Based on the actual oil selling price of each year, the input to output ratio was calculated as 1:3.1, and the EOR cost of one barrel oil produced was 21.5 USD, while the cost of one barrel oil produced in waterflooding is 52.1 USD. Under 30 USD/bbl oil price, the input to output ratio is 1:1.4. The results show that the NPF project has good technical and economic effect, and even under extreme low oil price, it still has economic feasibility.

For the developed mature oil fields, the geological and development recognition is certain, and there are complete facility contruction. Under low oil price condition, it is obviously more economical to use novel efficient EOR technologies.The opinion of the paper may provide some reference for oil companies to make investment decision in low oil price period.
Successful Matrix Acidization Using Organic Acid System for Sandstone Reservoir of Western Onshore Fields of India: A Case Study
Authors: Shah Sohil , Singh S. K. , Bahuguna V. K. , Rajendra K. W.
Published: April 2017

This paper aims to present the use of organic acid system for matrix acidization. When multiple minerals are present, they can create more formation damage and pose a challenge for acid treatments. In such cases, the paper proposes how a successful treatment can be designed.

Frequent acidizing operations are carried out in western onshore field of Oil and Natural Gas Commission (ONGC). It was observed that some wells were not responding effectively. To get more effective stimulation activities, a methodology was developed, under whichthe first step was to obtain the data related to well details and lithology, and second step was to obtain quantitative mineralogical data using (XRD).

Based on the above methodology it was found that the formation contained large amount of chlorite and other minerals, and that high concentration of HCl can create irreversible damage to this. To avoid this potential damage by HCl preflush, it was proposed to use organic acid preflush instead. Organic acid was proposed because of slow reaction rate, better result in presence of high iron content, better application in high bottom hole temperature etc compared to HCl. Organic acid, and HF were used as mainflush followed by overflush. This organic acid system was used in water injector well of the same formation.

Well head pressure and pumping rate data was recorded for well A and using that matrix acidization evaluation techniques were applied to the wells to quantitatively analyze the effectiveness of stimulation treatment. The same acid system was used for well B and a positive result was observed. Effectiveness of this result, of well A, was compared with previous operations where organic acid was not used. Same procedure of treatment evaluation was carried out and reduction in skin factor was calculated.
Delineating Complex Channel Sands Distribution Alongside Volcanic Flows with Spectral Decomposition Attribute Analysis: Saraswati Field, Barmer Basin
Authors: Rao Kola Venkateswara , Wahengbam Dhanachandra , Bhatnagar Anil Kumar
Published: April 2017

Saraswati oil field is located in the central part of Barmer basin in Rajasthan, India. Primary reservoirs are within Barmer Hill Formation, deposited in a fluvial environment overlying the Fatehgarh formation. The Fatehgarh formation also includes sediments deposited in a fluvial environment, but there are also episodes of volcanic flows which were deposited in between the fluvial deposits. Volcanic flows in the upper part of the Fatehgarh mask the seismic reflections of the overlying basal Barmer Hill (BH) deposits. In this paper, we describe the methodology of effective integration of spectral decomposition attributes and seismic attributes to establish sand fairways of the Barmer Hill formation. The main objective of this study was to characterize the thin channel sands within the BH formation. Spectral decomposition technique was applied for characterizing thin bed reservoirs of the Upper BH section.. A combination of spectral decomposition and seismic attribute studies were conducted to distinguish and delineate the Lower BH sands from underlying Fatehgarh volcanics. The results from both these seismic studies were integrated with well and reservoir data to establish lateral distribution of sand fairways and their morphologies within the BH formation.
Unconventional Installation of Insert PCP
Authors: Kumar Prakash , Bohra Avinash , Tiwari Shobhit
Published: April 2017

The paper discusses a case study of unconventional installation of an Insert Progressive Cavity Pump (IPCP) in a well with 4-1/2" production tubing without a Pump Seating Nipple (PSN) in place. The installation was unique application as no flexisert anchor was available for 4-1/2" tubing size which are commercially available for 2-7/8" and 3-1/2" tubing sizes. This unique installation while producing slightly lower than conventional PCP was the first of its kind, fit for purpose and helped in reviving a well without conducting a costly workover for changing out the PCP. This installation further opened an avenue for successful intervention for many other wells completed with conventional PCP without a PSN, and helped in saving a workover each time.

Another innovative solution to delay workover was implemented in the field in which a PSN for I-PCP was installed during the intial completion itself in anticipation of tubing integral PCP stator failure before the tubing failure necessitating a full workover.
Propane Fracturing: A Waterless Approach, Safety Considerations and Its Prospects in India
Authors: Kumar Nitesh , Rajput Saunil , Gautham K. G.
Published: April 2017

The hydraulic fracturing industry is a fast-growing industry but the conventional hydraulic fracturing technique uses a large amount of water and a lot of harmful chemicals in order to extract more hydrocarbons from the formation which give rise to a large number of problems. Canadabased GasFrac Energy developed an innovative alternative to hydraulic fracturing which utilizes propane based gel or gelled LPG as a fracturing fluid to fracture the formation. Propane is a very clean fluid, ecofriendly and can be recovered almost 100% after the fracturing process is completed.

As compared to conventional hydraulic fracturing technique, LPG fracturing provides a better fracturing length. A precursor to the poor fracturing performance is poor recovery of the fracturing fluid, often less than 50% of the fracturing fluid is recovered. This unrecovered fluid occupies the pore spaces of the reservoir matrix and becomes immobile resulting in blocking the passage for hydrocarbons. Therefore, the recovery of hydrocarbons by conventional hydraulic fracturing job is much less than that of propane fracturing, where the recovery of fracturing fluid is almost 100%.

This paper will discuss about various aspects of Propane Fracturing, safety aspects during field application of this technology and its prospects in a country like India which is trying to revive its oil and gas production and has a huge potential hydrocarbon reserves including much of it's reserves still unexplored.
"Big Brother is watching you"/"You are watching Big Brother". The phenomenon of (over)watching and the imperative of ratings on a reality show
Authors: Radulović Lidija , Erdei Ildiko
Published: April 2017

The reality show "Big Brother" represents a metaphor for the transformation of contemporary media toward its commercialization and the primate which is given to entertainment as opposed to classic informative and educational content, which, in Serbia, takes place in the context of post-socialist transformation. The hyper commercialized character of "Big Brother" is the product of a new guiding idea in the media sphere, which is to measure success only on the criteria of ratings. In all versions of "Big Brother" (the "ordinary" as well as VIP), the framework of the reality show is made up of two elements: the phenomenon of surveillance and the commercial principle of the programme. In this paper we wanted to take these two themes - surveillance and commercialization - and connect them through the concepts of the "panopticon"/"synopticon" and "ratings". In the analysis and discussion we will show that the newfangled criteria of "ratings" is directly dependent on the situation in which the viewers of the reality format find themselves, situations in which "many view and decide on the fate of the few". We will analyze the ways in which the very production of the reality show is geared toward influencing the ratings, through interventions and the direction done by the production team, but also the reception of the show in specialized forums. In the second case, a netography of the reception of VIP BB 2013 was undertaken, taking into account the discussions in the forum and the monitoring of YouTube videos. Based on this, we singled out the most viewed moments in the reality show, and considered the reasons why certain events and/or actors who participated in them garnered special attention among viewers, thus increasing the ratings of the show, but also multiplicating the commercial effect through the participation of viewers through different media platforms (websites, forums, online votes etc.)
Hearing Silent Voices: Women and History in Assia Djebar's Novels
Authors: Melić Katarina
Published: April 2017

Silence in the universe of women in the Maghreb is a common topic in the Francophone literature. The main topic in Assia Djebar’s writings in what has been called the second period of her literary production (1980-1990) is resurrecting the silent voices of women in history. By breaking the silence imposed on women and giving them a voice and a memory, Assia Djebar unveils the silences of the Algerian history (past and contemporary). We intend to examine in this paper the silences unveiled by Assia Djebar in her novels of this period – Femmes d’Alger dans leur appartement, L’amour, la fantasia, Ombre sultane and Loin de Médine – in order to show how Assia Djebar (re)builds another critical view of history and restores the hidden voices of women and places for them in history, thus bringing into question the relationship between fiction and history, women and history. To this end, we will rely on theories of postmodern historiography and on the Derridean concept of phenomenological voice identified as a “third space” in which the woman exists as a subject.
Language ideologies in the mirror of some Serbian students’ attitudes towards variation and change in British English
Authors: R. Stojić Svetlana
Published: April 2017

Popular beliefs and value judgements about language underlie attitudes that may reflect various language ideologies. In this light, the paper presents some results of two questionnaire-based surveys into students’ overt attitudes towards varieties of English. The first survey was carried out in 1997 amongst first-year students of English at the English Department of the Faculty of Philology, Belgrade University, while a replication survey was conducted in 2016. The primary aim of this comparative study is to assess whether any ideological and attitudinal shifts may have occurred in the intervening nineteen years. The main focus of this paper is on the results related to attitudes towards varieties of British English and towards language change. The comparison of the results has indicated that, although a lower percentage of the 2016 survey respondents expressed stereotypical views of some social and regional varieties of British English, their attitudes towards language change are very similar to those expressed by the participants in the 1997 survey.
The cruelty and tyranny of Turkish sultans in renaissance novellas
Authors: Valčić – Bulić Tamara
Published: April 2017

The subject of analysis in this paper consists of two renaissance novellas: the author of the first novella is the Italian renaissance writer Matteo Bandello, while François de Belleforest is the author of its French translation/adaptation and the author of the second novella which will be analyzed, and which was inspired by a renaissance tragedy. The main theme of both of the stories is the elimination of a potential pretender to the throne of the Ottoman empire: the first story details the fratricide which took place when Mehmed II took the throne, while the other tells of Suleiman the Magnificent's execution of his son Mustafa because of an alleged betrayal. After pointing out the basic characteristics of Bandella's renaissance novella, as well as the newly made "tragic tale" subgenre it belongs to, special attention will be paid to the ways in which Bandello and de Belleforest tell of historical events: storied of the cruelty and depravity of Turkish sultans are a special - even if only literary - way of dealing with the objective threat which the Ottoman empire posed to Europe. Aside from the visible ideological motives, in the case of these authors, and especially François de Belleforest, there is a detectable tendency towards approaching the genre of tragedy. In this case, tragedy is, first and foremost understood as the display of pathetic and painful images; which is displayed through the aesthetic of suffering and the emphasis on such images within the narrative.
Goffman's predramaturgical publications and their intellectual context: 1949-1953
Authors: Škorić Marko
Published: April 2017

Given the status of Erving Goffman in the social sciences, a lot has been written about him but his early and (especially) unpublished publications are not widely known, although they contain few original ideas that were never used in later part of his career and some that were elaborated in better known works. The paper discusses intellectual context, influences and phases of Goffman's sociology, especially predramaturgical phase – his unpublished master's thesis, two early papers, one unpublished report and unpublished PhD thesis. In the context of his later thought, doctoral thesis is especially interesting because it contains Goffman's first exposition of interaction order. At the end of the paper we see how Goffman went into dramaturgical phase.
Silent Bodies: Japanese taciturnity and image thinking
Authors: Došen Ana
Published: April 2017

A nonverbal transmission and an implicit way of communication are highly encouraged in Japanese society. The reason for this “silence prerogative” is often found in historical facts of lengthy feudal era or in ancient philosophies and religions such as Buddhism and Confucianism and their various concepts which privilege taciturn way of communication. Moreover, the unspoken comprehension is often complemented by the attitude which equates truthfulness with silence. This paper explores the silence as a communicative act in the domain of Japanese art, where the body takes over the place of the language. In traditional Japanese theatrical performance, such as noh, words are often inadequate to convey emotion and therefore the aesthetics of emptiness, understatement and abstraction is transcended by the masks with "nonmoving lips". Drawing on theoretical perspectives from both East and West, I argue that the silent bodies operate as deliberate and integral determinants of Japanese non-silent art forms – especially in cinema and theatre. In the Eastern thought, visual perception is fundamental in cognition of the world, whereas auditory discernment is secondary to "image-thinking" (Yuasa). Accustomed to taciturnity, Japanese audience effectively corresponds to the performance and "completes" it in silence.
The conceptualization of the cultural identity of third generation Serbian work migrants in FR Germany
Authors: Jovanović Lazar
Published: April 2017

Based on data gathered through several months of fieldwork undertaken in 2015 in several cities in different constituencies of FR Germany, the paper aims to give a theoretical standpoint on the third generation of work migrants and their cultural identity, and to problematize the process of its creation. With this objective in mind the gathered data will be processed in light of ideas about the hybridity of identity, globalization flows, and ideas such as surrogate nostalgia and community of emotion, with a short overview of the historical and social processes and the main actors of these processes, the forbearers of the group which was studied, the members of the first and second generations of Serbian labor migrants.
Architects of happiness: Notes on the mindwork of migration
Authors: Dantzer Alexandra
Published: April 2017

The purpose of this paper is to propose an alternative take on the phenomena of migration by discussing the notion of happiness seen as technology of the self that is oriented towards the future and therefore connecting different times and places. This understanding is predicated upon the comprehension that happiness shapes what coheres as a world and that it is always anticipated, rather than actual. I want to argue that migration, instead as simple crossing of the border and settling for “better life”, is an on-going mental process that I refer to as mindwork. Through the proposed framework mobility is understood as a way of achieving happy life. In contrast to previous theories, emotions are not seen as vehicles making the migration process easier or harder, but vice versa. By inverting the process anthropologist can refine their approaches in both fields, anthropology of emotions/happiness and migration studies and gain deeper insight into questions such as: what does it mean to be happy in a specific context, how does happiness enter the lives of people and last but not least why do some people migrate and what do they invest into this process marked with ambiguity?
A LEGALIZAÇÃO DA CLASSE TRABALHADORA BRASILEIRA NA PERSPECTIVA DE BERNARD EDELMAN
Authors: Teixeira Marcelo Tolomei , Fabriz Daury
Published: April 2017

O presente trabalho faz uma abordagem sobre a obra de Bernad Edelman – A Legalização da Classe Operária – que analisa os direitos trabalhistas como uma forma perspicaz encontrada pelo capital para neutralizar a luta de classes.  Fazendo uma análise de como os direitos sociais se implantaram no Brasil – através da Era Vargas –, de fato todo o arcabouço da ideologia – externada pelos peritos sociais tinham a luta de classe como um mal a ser rejeitado. O tema de Edelman, ou seja, direitos sociais à luz de concessões revolucionária há de ser analisado sob o novo enfoque neoliberal dos presentes dias – quanto à defesa de tais direitos e independentemente de sua veemente crítica merece a defesa da sociedade – sob pena de se caracterizar verdadeiro déficit civilizatório. Como metodologia, utilizou-se o materialismo histórico dialético para discutir acerca da pretensão da ideologia do capital em negar a luta de classe através dos discursos jurídicos que serão apontados.
Megöregedni ma… és holnap? Mit tehetünk a máért, mit a holnapért?
Authors: Székács Béla
Published: April 2017

Jelen írás célkitűzése kettős. Egyfelől be szeretnénk mutatni az öregedő személyekre jellemző meghatározó biológiai folyamatokat, a szervezeti hanyatlás egymással részben össze is fonódó két (normál versus kórosan felgyorsult, kórfolyamatokkal, patológiás szövődményekkel tarkított) módozatát, illetve azt, hogy mindezek közül mit befolyásolhat az egyén és mit nem. Másfelől pedig szeretnénk ráirányítani a figyelmet arra, hogy ma milyen alapvető, individuális, illetve szűkebb közösségi és szélesebb értelemben vett társadalmi tényezők határozzák meg az előrehaladott életkorú emberek állapotát és sorsát. Arra is kíváncsiak vagyunk, hogy a vizsgált tényezők közül, amelyek ma meghatározónak tűnnek, melyek módosíthatók esetleg holnap.
Impacto del uso e incorporación de una wiki en el aprendizaje de la Biología
Authors: Vela Vargas Sonia Elena , Medina Almeida Carmen , Rodríguez Arroyo José Antonio
Published: April 2017

Este estudio fue desarrollado para conocer el impacto del uso e incorporación de una wiki en el aprendizaje de la Biología, como una forma de buscar estrategias para el mejoramiento del desempeño académico de los estudiantes de octavo grado de una secundaria colombiana  e incentivar su interés y participación en la clase de dicha ciencia. El enfoque metodológico utilizado correspondió a los métodos mixtos, con un diseño exploratorio secuencial en modalidad comparativa. El análisis de la información obtenida permitió evidenciar, que el uso e incorporación de una wiki ayudó a modificar el rol del docente y las interacciones de los alumnos, de tal forma que se logró transformar la enseñanza tradicional de las clases y promover el trabajo cooperativo.