bluuebunny/crossref_metadata_2025_split huggingface dataset:
Rooming-In: Creating a Better Experience
Authors: Theo Lois O. , Drake Emily 
Published: April 2017

ABSTRACTThere are both pros and cons to the practice of rooming-in in the hospital after birth. One concern with rooming-in is the impact this experience has on postpartum mothers. Although rooming-in has many benefits, a challenge that mothers face in the early postpartum period is balancing the needs of their newborns while getting adequate rest. To explore this further, semistructured interviews were conducted with 25 postpartum mothers during their hospital stay. The results revealed how postpartum mothers perceived their sleep quality, rooming-in experience, and overall satisfaction. The majority (60%) of the postpartum mothers in this study had a positive rooming-in experience. Nevertheless, many factors were identified as contributors to poor sleep quality as well as positive and negative rooming-in experiences.
Effects of hexavalent chromium on growth , phytotoxicity , tolerance index of Cosmos bipinnatus, Cav. and Celosia cristata, L. - Phytoremediation
Authors: Karthik K. , Sharavanan P.S. 
Published: April 2017

<p>Genetically modified (GM) foods are derived from organisms whose genetic material (DNA) has been modified in a way that does not occur naturally. The introduction of a gene from a different organism or the term genetically modified plants and foods are most commonly used to refer to crop plants created for human and animal consumption using the latest molecular biology techniques. But not all genetically modified plants are grown as crops. There are many genetically modified ornamental plants are used for flowering purpose. The latest molecular technology alters the plant quality and used for many purposes. This present study is to investigate phytoremediation based on genetically modified ornamental plants <em>Cosmos bipinnatus, Cav. </em>and<em> Celosia cristata,L</em>. belongs to Astraceae and Amaranthaceae family. The main aim of the study is remedy for heavy metal pollution and relation to human health, ecosystem and economical disasters of wealthy and poor farmers.</p>
50 ANOS DE JORNALISMO DA GLOBO: recordar para reafirma
Authors: Santa Cruz Lucia 
Published: April 2017

Este artigo analisa a série especial 50 anos de jornalismo da Globo, exibida em cinco episódios ao final do Jornal Nacional, na semana do aniversário de meio século da emissora, em abril de 2015. O conteúdo do programa foi organizado tomando como base a memória de 16 jornalistas que participaram das coberturas dos principais fatos do período. Parte-se da hipótese que, muito mais que uma simples recordação, este especial tem como objetivo evocar a importância do telejornalismo e reafirmar a qualidade do trabalho desenvolvido pela emissora. Esta iniciativa se colocaria, portanto, como um contraponto à uma crescente desvalorização dos meios noticiosos tradicionais e especialmente à uma queda na popularidade da própria Rede Globo. Como método, empregaram-se a análise documental, a análise textual qualitativa e a análise de enquadramento
Optimasi Parameter Pemesinan dengan Proses Bubut pada Respon Kekasaran dan Kekerasan Permukaan Material S45-C Menggunakan Metode Taguchi - Grey - Fuzzy
Authors: Yasa Utama Firman , Hartutuk Ningsih Tri 
Published: April 2017

Turning is a widely used machining process in which a single-point cutting tool removes material from the surface of a rotating cylindrical work piece..Process efficiency increase significantly can be obtained by optimizing the process parameters, namely spindle rotation (n), feed rate (f) and depth of cut (a). In this research will optimize the surface roughness and hardness simultaneously using a combination of turning process parameters. The research was conducted on the material S45-C.Taguchi method is used, which is a combination of fuzzy logic and Taguchi method. Matlab software that has Matlab fuzzy toolbox aided fuzzy logic process. Design experiment using orthogonal array L9 (33) varying the three parameters which each parameters has three levels. Experiment design of L9 orthogonal array varied factor or cutting parameters such as spindle rotation (n), feed rate (f) and depth of cut (a). Since noise factors are excluded from the experimental design, the experiments were conducted with replication. Optimization was done by using grey-fuzzy Taguchi method. The results of the optimization process is a combination of parameters that result in an optimal response. Based on a combination of these parameters will be carried out confirmation test. Confirmation test was done to match the prediction results with the actual response.The results showed a combination of turning process parameters of S45-C that can generate the optimal response is spindle rotation (n)605 Rpm, feed rate (f) of 0,031 mm/minand depth of cut (a) of0,125 mm.
Kajian Numerik Ketebalan Lapisan Redaman Getaran Berbahan Semen untuk Dek Kapal Penumpang
Authors: H. Nugroho Wibowo , J. H. Purnomo Nanang , Suwarni Endah 
Published: April 2017

Ship vibration problems today's increasingly complex and often occurs in addition to the strict requirements of ship classification agencies for allowable levels of vibration so that passengers and crew more comfortable and secure. One method for reducing the influence of ship structural vibration is to minimize the response of the vibration by using damper. This paper describes the effect of the thickness of the damping layer made from cement material on the deck plate due to the harmonic load excitation. As cement is a common damper application on the ship deck. A numerical modeling based on finite element analysis was applied in two-layer conditions, namely an overall and tiling coating. The results of this study indicate that thee minimum thickness of the cement layer has an optimum damping for the overall coating is approximately 8 mm and as for tile coating is approximately 15 mm.
Pembuatan Electric Furnace Berbasis Mikrokontroler
Authors: Suprastiyo Haris , Tjahjanti Prantasi Harmi 
Published: April 2017

Electric furnace atau tungku listrik adalah peralatan pemanas yang menggunakan sumber panas dari listrik. Electric furnace konvensional yang ada sekarang terkadang kurang akurasi dalam proses waktu maupun suhu. Tujuan penelitian ini adalah membuat mesin electric furnace berbasis mikrokontroler dengan fungsi utama proses pemanasan lebih akurasi terjaga waktu dan suhu dan dapat di atur secara otomatis serta di monitor melalui LCD (Liquid Crystal Display). Metode yang dipakai adalah perancangan awal sekaligus pembuatannya dan pengujian untuk uji kinerja rangkaian kelistrikan, uji kecepatan pencapaian suhu, dan uji perpindahan panas dengan melakukan pengukuran suhu dari suhu dalam electric furnace hingga suhu permukaan luar pelat. Perhitungan perpindahan panas dimulai dari dalam dinding electric furnace, batu tahan api (refraktori), pelat besi dan suhu lingkungan dengan panas yang dihasilkan dari elemen listrik berkapasitas 4400 Watt. Diperoleh hasil electric furnace dengan dimensi ruang tungku ukuran 190 mm x 350 mm x 320mm. Uji coba kinerja rangkaian kelistrikan furnace, di coba pada suhu 800 ˚C di tahan selama 30 menit, hasil yang diperoleh suhu tetap konstan 800˚C. Uji kecepatan untuk pencapaian suhu, electric furnace mampu bekerja hingga tempertur maksimum 1000 ˚C, dengan kecepatan untuk pencapaian suhu 1000 ˚C selama 17.111 detik atau 47,5 jam dengan rata-rata kenaikan suhu tiap 1˚C adalah 0,1 detik, Laju perpindahan panas total pada dinding electric furnace adalah 6,83W/m2K.Kata kunci : Electric furnace, mikrokontroler, batu tahan api, perpindahan panas
Cómo realizar una medición inteligente basada en indicadores de gestión
Authors: Duque Gutiérrez Gerardo 
Published: April 2017

ONTARE. REVISTA DE INVESTIGACIÓN DE LA FACULTAD DE INGENIERÍA
Tomar decisiones en el mundo empresarial no es el resultado de la intuición, sino es el arte de basarse en la información adecuada. Es allí donde aparecen los indicadores de gestión, los cuales desde su concepción deben mantener cierto grado de lógica que se soporta en unas características esenciales, que permitirán establecer comportamientos y tendencias. El medir no es solo generar indicadores sin ninguna razón de ser, ya que solo es válido, sí y solo sí, permite la toma de decisiones, de ahí, que el presente artículo tiene como fin realizar una medición inteligente basada en indicadores.
High Density Survey Data and ESP Placement - Case Studies
Authors: Ledroz Adrián , Shoup Robert , Nicholson Barry , Favrot Thomas 
Published: April 2017

Abstract
Electrical Submersible Pumps (ESPs) are widely used as a form of artificial lift. ESPs need to be installed in a straight section of the well to avoid contact and friction between the stationary and rotating parts. In this paper, 4 case studies demonstrate how high density data together with a tortuosity processing algorithm and visualization software reduced failures and workover frequency or lead to alternative forms of artificial lift because of the high tortuosity of the well, all having a significant financial benefit for the operator.
The algorithm uses high density data and computes the wellbore tortuosity, the maximum diameter of a cylindrical device of a given length and the bending of a device placed in a particular section of the well with given length and diameter. The results can be presented as 3D representations of the wellbore.
The first case study focused on a highly tortuous well and the fact that the tortuosity analysis was able to find a 120 ft straight section of well to land the ESP and the pump is still running. A second case study showed that the currently used dogleg severity (DLS) and the tortuosity analysis differ in their conclusion; a pump placed using the tortuosity analysis ran without problems until it was replaced by a beam pump because of production volume. In the third case study, an ESP was placed using DLS information alone and suffered from a broken shaft after less than two weeks. The tortuosity analysis revealed that the wellbore was highly tortuous at the original depth. The pump was placed at a different depth and ran for almost a year until it was replaced by a beam pump due to reduction in production volume. Finally, a forth case study demonstrated the additional benefit of the tortuosity analysis in relation to the speed of descent of the pump and on pump placement.
The use of high density data together with the processing algorithm can effectively be used to determine the best lift type and the best location for the device. In addition, it shows the degree of bending of the device during its descent in the well, which can also help to prevent problems, and has resulted in changes in drilling practices with the focus on wellbore quality.
Well Trajectory Impact on Production from ESP-Lifted Shale Wells: A Case Study
Authors: Yuan Ge , Narvaez Diego A , Xue Han , Nagarakanti Sekhar 
Published: April 2017

Abstract
This paper presents an engineering investigation on the impact of well trajectory on production performance of ESP-lifted shale wells. A representative set of field data was selected as the input data to model the shale well with an ESP installed. Based on these data, a comprehensive analysis of production performance from ESP-lifted shale wells was performed. These wells had the same or similar reservoir characteristics, but different well trajectories including relatively smooth and highly sinuous toe-up and toe-down well trajectories. A transient dynamic multiphase simulator was used to perform the engineering investigation by integrating ESP performance and wellbore models over the life of a shale well, evolving from initial steady natural flow production to late-life unsteady and slugging flow production. From the analysis, the well trajectory does not impact the well production performance of an ESP-lifted well. The slugging flow results in a dramatic gas volume fraction changing from 0 to up to 100% at the pump intake. The study combines multiphase transient modeling (for the specific well trajectory) with reservoir modeling and historic production data. The analysis includes models of the well behavior and instabilities that allow operators to evaluate the application of ESP systems considering well trajectory and optimize timing for installation and withdrawal.
ESP Motors Reinstall Criteria to Maintain Reliability in Cerro Dragon Field
Authors: Marzona Mario , Aguila Adrian , Oyarzun Raul , Teves Ricardo 
Published: April 2017

Abstract

Objective
The purpose of this paper is to share the experience obtained during the past 15 years, with respect to the re-use of motors, the considerations of the applications and the resulting knowledge from the processes of inspection and unit disassembly, which led to the implementation of improvements in the design of the motors used in Pan American Energy in the Golfo San Jorge basin.
Improving ESP Application for Unconventional Wells in the Bakken
Authors: Britvar James , Williams Sandy 
Published: April 2017

Abstract
Operators that are involved in the development of unconventional wells place a lot of focus on improved technology and cost reduction related to horizontal well technology and multi-stage fracture design. A significant development with regard to horizontal well technology came with the use of electrical submersible pumps (ESPs). As operators began to use ESPs more regularly, the benefits to estimated ultimate recovery (EUR) and well economics were substantial. By analyzing how operators utilized ESPs, the authors studied and identified how to derive even greater benefits from their use. This paper is a case study illustrating key steps taken to improve the results obtained from the use of ESPs in the Williston Basin.
In its continuing effort to improve operational efficiencies, Oasis Petroleum trialed ESPs for unconventional wells in the Williston basin of North Dakota. The utilization of ESPs greatly increased EUR and well economics. Over a two year period, Oasis has been able to obtain even further benefits from the use of ESPs by implementing an ongoing stimulation optimization program that resulted in higher well productivity and an increasing opportunity to add more value when ESP's were utilized.
Oasis embarked on a process to further improve ESP performance that addressed: training, historic failure causes, enhanced equipment specifications, performance based contracts, improved real-time monitoring and diagnosis, procedure, checklists and failure tracking.
This paper will present the key actions taken to improve the application of ESP's for unconventional reservoirs. Details of main improvements and results will be presented including key actions, impact on ESP run life and benefit on well production. Case histories will be included.
Leveraging Run-Life Data and Industry Collaboration in a Low-Cost Environment
Authors: Sheldon John , Trevisan Francisco , Radke Craig , Alhanati Francisco 
Published: April 2017

Abstract
ESP operators are continually striving to reduce downhole equipment failure rates in order to maximize well uptime, which results in reduced well servicing costs and maximized production. ESP system run-life data tracking and analysis activities are critical for determining appropriate actions that can be taken towards these objectives. These activities have typically included collecting, validating and storing data for a relatively large set of parameters. However, in low-cost operating environments, comprehensive data collection activities are often ranked as a relatively low priority.
This paper proposes a strategy to leverage a relatively smaller data collection effort and high-level analysis, covering only a limited number of critical run-life parameters, to narrow down the most severe reliability challenges. Additional efforts can then be focused on internal and collaborative activities specific to addressing the top challenges, therefore reducing total operating costs. The proposed strategy is based on work conducted within a joint industry project.
This paper discusses two case studies where this strategy was successfully implemented. The first case study relates to the challenges associated with installing and operating ESP systems in horizontal wells and wells with regions of high curvature. Once substantially higher ESP equipment failure rates were confirmed for wells with regions of high curvature, a focused effort by several companies was initiated to correlate equipment failure rates with more detailed well and equipment characteristics to properly establish reasonable operating envelopes. The second case study relates to the identification of a critical equipment sub-component with a relatively high failure rate in certain applications. Upon the sub-component being identified, a focused industry effort was initiated through lab testing to determine which designs may be more robust, given the specific demands of the application.
The above case studies have shown that, by structuring the data collection process to include an initial limited data collection effort, key challenges can be effectively identified and then limited available resources can be leveraged through industry collaboration to undertake actions that have the potential to lower operating costs and increase production.
Installation of Electric Submersible Pump as Artificial Lift Method in Low Flow Rate Wells, a Case History
Authors: Del Pino J. J. , Martin J. L. , Vargas H. , Maldonado J. S. , Rubiano E. , Núñez W. , Sánchez L. M. , Prada J. , Gómez S. , Sarkis N. , Gonzalez A. 
Published: April 2017

Abstract
Historically, electric-submersible pumps (ESP) were designed for a production above 3,000 BFPD. For lower flow rates it was necessary to install another artifical lift method such as beam pump (BP).
In the Caño Limón and La Cira-Infantas fields, located in Colombia with 30 and 98 years of production respectively, the number of wells with flow rates lower than 1,000 BFPD has been increasing as well as the number of wells with BP as a lift system.
The increase of failures in BP systems, and the greater cost of the completions compared to ESP, made it necessary for the analysis of other artificial lift methods to handle the required flow rates.
Therefore, in 2013, the implementation of ESP technologies with a nominal flowrate of 1,000 BFPD were carried out without failures associated with the ESP system, showing that they were able to work under such conditions, reaching rates between 50 and 1,000 BFPD, thus becoming an effective option to replace the wells with BP, as long as the conditions of pressure and submersion allowed it. In La Cira Infantas field, 60 wells with rod faults of the BP system have been successfully replaced by ESP systems with flow rates ranging from 400 to 2,000 BFPD.
This work explores the possibility of installing ESP technology in wells where it was not previously seen as an option, presenting the results of the implementation of this technology producing even lower flow rates than those in the initial sizing, reducing the number of failures and the costs associated with the continuous interventions of the Mechanical Pumping systems.
Live Well Deployment of Retrievable ESP Systems, Case Histories
Authors: Nutter Greg , Malone David , Patterson John 
Published: April 2017

Abstract
Electrical submersible pumps (ESPs) are frequently the optimal artificial lift option to cost-effectively maximize reservoir recovery and production. However, the full potential of ESPs in offshore and remote locations has historically been limited by two key challenges: rig deployment and the inability to access the reservoir without pulling the production tubing.
In order to reduce the burden operators face when utilizing conventional ESP systems, the company has developed a system that makes installation and retrieval of an ESP as simple as running a production logging tool; radically reducing the cost and downtime associated with ESP workovers by utilizing a lightweight slickline unit instead of a rig or workover unit to replace the ESP.
Optimization techniques for leakage management in urban water distribution networks
Authors: Gupta Aditya Dinesh , Bokde Neeraj , Marathe Dushyat , Kulat Kishore 
Published: April 2017

Abstract
Reduction of leakages in water distribution systems (WDSs) is one of the major concerns for water industries. This paper presents a leakage reduction technique using pressure management by optimizing the water level in storage tanks, along with optimized control and localization of pressure-reducing valves (PRVs) in WDSs. A new mathematical tank and pump simulation algorithm is presented for controlling pressure in WDSs, by optimizing the water storage level in the tank depending upon the demand variations. The tank is used as a decision variable for the leakage reduction model. A modified reference pressure algorithm is introduced for improving PRV localization. A multiobjective genetic algorithm (NSGA-II) is used to find the optimized operational control setting of the PRV for leakage minimization. The proposed algorithm leads to a leakage reduction of 26.51% in Anytown WDS and 20.81% in a modified benchmark WDS. This technique leads to an appreciable reduction in leakage rate, with fewer PRVs required, taking into account constraints such as maintaining a lower hydraulic failure index (&lt;0.01), emergency storage, etc. It can be concluded that the proposed novel leakage reduction technique provides a more cost effective and efficient solution for leakage control.
The main social roles of English language in Russia in their connection with CLIL university teaching and classroom interaction
Authors: Pavenkova Maria Rubtcova , Pavenkov Oleg 
Published: April 2017

This study investigated the main social roles of English language in Russia in their connection with CLIL university teaching and classroom interaction. Data comes from two stage expert research with CLIL and ESL university teachers (N=33). They were asked about the social roles of English language in the nowadays Russian universities and preferable conception for future development of CLIL university program. Four conceptions were chosen by experts: Global English, Russian English, multilingual conception and English as an investment. The features of each concept were identified and discussed in terms of their influence on the process of CLIL education. The Â«conceptions-leadersÂ» were determined by ranking. They are Russian English and Multilingual conception. Â Despite the fact that the concept of Russian English considered appropriate at the present time, future preferences are associated with the concept of multilingualism.