bluuebunny/crossref_metadata_2025_split huggingface dataset:
Gastric schwannoma: a benign tumour often mistaken clinically, radiologically and histopathologically for a gastrointestinal stromal tumour – a case series
Authors: Williamson JML , Wadley MS , Shepherd NA , Dwerryhouse S 
Published: May 2012

INTRODUCTION Gastric schwannomas are rare mesenchymal tumours that arise from the nerve plexus of the gut wall. They present with non-specific symptoms and are often detected incidentally. Pre-operative investigation is not pathognomonic and many are therefore diagnosed as gastrointestinal stromal tumours (GISTs). Operative resection is usually curative as they are almost always benign, underpinning the importance of differentiating them from GISTs. METHODS Three cases of gastric schwannomas were identified over a seven-year period. The clinical details and management were reviewed retrospectively. RESULTS There were two women and one man with a mean age of 62 years (range: 51–69 years). Two patients presented with bleeding and one with abdominal pain. The mean tumour size was 5.2cm (range: 2–10cm) and the tumours were resected completely following total or wedge gastrectomies. Histology in all cases showed spindle cells with a cuff of lymphoid tissue. Immunohistochemistry confirmed positive S100 staining and negative CD117 and DOG-1 staining in all cases. CONCLUSIONS We report our experience with these unusual primary stromal tumours of the gut and their presentations, preoperative investigations, operative findings and pathological findings are discussed. Operative resection in all cases has been considered curative, which is supported by previous series confirming the excellent prognosis of gastric schwannomas.
The challenges and opportunities of community celebrations that value diversity and foster unity: Beyond ‘spaghetti and polka’
Authors: Hilbers Julieanne 
Published: May 2012

ABSTRACT
There is an interplay between celebrations that value the individual, foster connection with others like oneself, those that seek to value diversity across communities and those that identify with the whole-of-community in ways that respect individual diversity. This article explores the contribution of celebrations towards valuing diversity and the importance of celebrations that are responsive to the dynamic, multidimensional nature of communities. It draws on doctoral research reviewing contemporary festivals held around Australia. Arguments are made for the consideration of celebrations that enable a shared experience and celebrate each individual’s uniqueness.
Enacting change: Disability and the arts in Northern Ireland
Authors: Goddard Jennifer 
Published: May 2012

ABSTRACT
Disability Arts (arts created by people with disabilities as a political act), which grew out of the Disability Rights movement in the United States and in England in the 1970s–1980s, is not widely practised or recognized in Northern Ireland. Most arts practice in the region involving people with disabilities is based on an Arts and Disability approach (arts for people with disabilities by non-disabled people). This approach tends to attract criticism from the Disability Arts movement, as it relies on non-disabled facilitators and practitioners, who may not challenge the ownership and power dynamics of the dominant over the marginal group. This suggests that there is need for cultural and attitudinal change. However, history has repeatedly shown that it is neither appropriate nor acceptable to ‘cut and paste’ the British model into the Northern Irish context. Furthermore, the social model of disability embedded in UK legislation has recently been challenged by certain voices from within disability studies. The latter half of this article focuses on the initial stages of a participatory action research study with the theatre company Kids in Control, Belfast, in August 2011. The first in a series of three workshop cycles, this practice research had a focus on developing working relationships with young adults with learning disabilities, and observing the way in which they work individually and as a group using drama. Subsequent research will be used to investigate the development of an independent professional theatre company to be led by the young people themselves, given that this is their preferred outcome. Throughout the research process, some of the following questions will be investigated:
Given that contextually appropriate transformative cultural and attitudinal change needs to take place in Northern Ireland with regard to disability, how exactly should this happen?
What should these changes look like, and what should be the result?
How can models of good practice be developed and disseminated?
Negotiating cultural identity through the arts: Fitting in, third space and cultural memory
Authors: Wakholi Peter Mbago , Wright Peter 
Published: May 2012

ABSTRACT
The article examines ways in which arts-based educational approaches were applied to a group of African descendant youth in Western Australia, as a way of understanding challenges to their bicultural socialization and means to developing their bicultural competence. Drawing on African cultural memory as a cultural resource enabled participants to discover the relevance of African cultural memory and embodied knowledge to their bicultural socialization and bicultural competence. The article challenges the argument that successful integration into dominant culture is only possible when migrants remain focused on acquisition of dominant cultural values – ‘Fitting in’. The African Cultural Memory Youth Arts Festival (ACMYAF) offered an alternative conception of successive integration as a process inclusive of creative appropriation and revaluation of ancestral culture through cultural memory. The festival became a third space through which the participants explored embodied knowledge and African cultural memory towards a positive self-concept and bicultural competence.
Self-Diffusion of Lithium in Amorphous Lithium Niobate Layers
Authors: Rahn Johanna , Hüger Erwin , Dörrer Lars , Ruprecht Benjamin , Heitjans Paul , Schmidt Harald 
Published: May 2012

Abstract
We investigated lithium self-diffusion in amorphous lithium niobate layers between 298 and 423 K. For the experiments, amorphous 6LiNbO3/ 7LiNbO3 isotope hetero-structures were deposited by ion beam sputtering and analysed after diffusion annealing by secondary ion mass spectrometry (SIMS). This arrangement allows one to study pure isotope interdiffusion. The results show that the diffusivities obey the Arrhenius law with an activation enthalpy of 0.7 eV, which is considerably lower than the activation enthalpy found for LiNbO3 single crystals in literature. Consequently, the Li diffusivities are higher by at least eight orders of magnitude in the amorphous samples in the temperature range studied.
Ultraviolet sensors using a luminescent europium (III) complex on acrylonitrile butadiene styrene polymer
Authors: de Souza Érica A. , Azevedo Caroline B. , Rocha Lucas A. , de Faria Emerson H. , Calefi Paulo S. , Ciuffi Katia J. , Nassar Eduardo J. , Silva Jorge V.L. , Oliveira Marcelo , Maia Izaque I. 
Published: May 2012

Abstract
Living with Difference: Experiences of Adolescent Girls with Cleft Lip and Palate
Authors: Tiemens Kim , Nicholas David , Forrest Christopher R. 
Published: May 2012

Objective This study explored the experiences of adolescent girls with cleft lip and palate who were preparing for orthognathic surgery. Design A qualitative study, based on a phenomenological approach, explored adolescents’ experiences. Two 1-hour semistructured interviews were conducted before surgery, and member checking was employed to verify findings with each participant. Setting A tertiary care pediatric hospital in central Canada. Participants A criterion sampling technique was used to recruit a sample of seven participants with cleft lip and palate ranging in age from 15 to 20 years who were scheduled for cleft orthognathic surgery. Results Participants described experiencing teasing, bullying, and stares. In many cases, participants sought to resist and dismiss negative social attitudes about their visible difference while working to combat this with a positive view of who they really are. To varying degrees, participants felt constricted in engaging in the community as they were worried what others thought of their visible difference. They worked at finding ways to reduce the impact of social stigma through coping strategies, social supports, and reconstructive surgery. Conclusions Adolescent girls can experience strain associated with living with a facial difference; however, they find strategies to cope with the perception of difference. Reconstructive surgery is viewed as a means to increase confidence. Further intervention is needed in understanding and addressing stigma and fostering resiliency related to female adolescents living with a facial difference.
Phylogenetic implications of the oldest crinoids
Authors: Guensburg Thomas E. 
Published: May 2012

For many years the earliest record of the class Crinoidea was a single late Tremadocian genus. In the past decade, five crinoid genera were described from the early and middle Tremadocian, near the base of the Ordovician. Together these six genera represent a diverse assemblage with all but one expressing existing subclass apomorphies. Two of the recently described genera were initially assigned to their own order (plesion) Protocrinoida but not to a subclass. Here they are placed in the camerates based on apomorphies of the tegmen complex. Protocrinoids exhibit plesiomorphies unlike typical camerates. Two genera group with cladids, one expressing dendrocrinine apomorphies and the other cyathocrinine. One genus is placed within disparids, with iocrinid apomorphies.Based on its ancient age and trait mosaic, the protocrinoidTitanocrinusis designated as outgroup in a phylogenetic analysis using all other Early Ordovician and select Middle Ordovician taxa as an ingroup. Character compilation and phylogenetic analysis posit early class-level plesiomorphies inherited from an unknown ancestry but lost during subsequent crinoid evolution. Class-level apomorphies also emerge, some of which were subsequently lost and others retained. Results are generally robust and consistent with earlier subdivisions of the class, but supporting lower rank reorganizations. Strong support for the camerate branch low in the crinoid tree mirrors findings of earlier workers. Cladids branch from a series of intermediate nodes and disparids nest highest. Branching of disparids from cladids could be homoplastic.
Cladid crinoids from the Late Kinderhookian Meadville Shale, Cuyahoga Formation of Ohio
Authors: Kammer Thomas W. , Roeser Edgar W. 
Published: May 2012

A total of 17 species of cladid crinoids are documented from the late Kinderhookian Meadville Shale Member of the Cuyahoga Formation of northeastern Ohio, the most diverse assemblage of Kinderhookian-age cladids known in North America. One new genus, six new species, and seven new combinations are reported. New taxa includeCuyahogacrinus lodiensisnew genus and species, and the new speciesCyathocrinites simplex, Atelestocrinus meszarosi, Goniocrinus sceletus, Aphelecrinus gracilis, andLebetocrinus ohioensis.New combinations includeLogocrinus warreni(Laudon et al., 1952),Histocrinus aegina(Hall, 1863),Paracosmetocrinus richfieldensis(Worthen, 1882),P. corycia(Hall, 1863),Acylocrinus lyriope(Hall, 1863),Linocrinus merope(Hall, 1863), andL. paternus(Hall, 1863). Remaining taxa includeCyathocrinites lamellosus(White, 1863) andAscetocrinus whitei(Hall, 1861), both of which also occur in the Osagean Burlington Limestone, and the endemic speciesCosmetocrinus crineus(Hall, 1863) andPachylocrinus subtortuosus(Hall, 1863).Collectively, the cosmopolitan genera and species of cladids show a greater overall affinity with Osagean cladid faunas than with other Kinderhookian cladid faunas. However, this is true for other Kinderhookian cladid faunas as well that individually have more taxa in common with Osagean faunas than other Kinderhookian faunas. This suggests a greater degree of endemism and local speciation during the Kinderhookian as a prelude to the rapid radiation of cladids, and other crinoids, during the Osagean.
Success Story: Importance of Reservoir Monitoring For Finding Bypassed Oil Which Lead Production Incremental 295%
Authors: Khresno Sri , Suderajat Suderajat , Prakoso Ambaria , Kurniawan Akbar , Nur Ilhami , Ontowiryo Bambang 
Published: May 2012

Abstract
The Lower Sihapas Formation in the M-Field consists of sandstones with subordinate inter-beds of mudstones, shale and coals.
The C sand is a Darcy-permeability blocky sand and part of Lower Sihapas Formation. In the M2-03 well, in 1987, the C sand was perforated at the top of sand to drain oil from the entire sand. After 24 years of production, when the oil rate was 16 BOPD and the water cut was 99%, we ran through-tubing C/O log to look for by-passed oil in any sand. The RST result shows unswept oil in C sand. Other supporting data are also bringing into upswept potential are: Production log data shows small flow contribution from C sand, suggesting small cumulative production; Micro Resistivity Image logs from offset wells suggested the C sand is might be laminated sand that could impacts on low productivity, and also may isolate existing perforation from lower sand body ofthe sand.
The attractive water saturation in the lower sand of 40% from the C/O log might be right.So, we decided to perforate the lower C sand using a through-tubing gun. After perforation, the oil rate spiked at 2000 BOPD and then quickly settled down to 100 BOPD. The cost for the C/O log and perforation was recovered within days. Executing a through-tubing perforation instead of a "stronger" casing gun perforation via a workover saved us more than $250,000.
This data has enabled us to act to slow production decline, save wellwork cost and extend the economic life of platforms. We continue to find that cased-hole logging with Production log and C/O log adds value in mature high water-cut oil wells, by identifying watered out sands and by-passed oil sands.
Balancing Project Schedule & Cost on Sour Gas Development Project Case Study
Authors: Asmoro Trian Hendro , Putri Autie Minati 
Published: May 2012

Abstract
The gas field development project is a challenging phase, since wells need to be drilled to assess the oil/gas reserves and production facilities need to be built. The ultimate objective of the project is to deliver the gas sales to selected buyers as per agreed schedule and price. As result, the project schedule and cost are defined to achieve the objective.
Project schedule and cost are known to work in equilibrium. Where one of these dimensions is restricted or extended, the other dimension will then also need to be either extended/increased or restricted/reduced in some way. Given that quality must not be compromised, this paper aims to describe how to get the optimum balance of project schedule and cost on an onshore gas processing plant project located in north-east Indonesia with 90 MMSCFD feed gas capacity. The feed gas has a high content of CO2 and H2S.
The schedule of the development project was initially divided into 2 phases: Early Production using sweet gas facilities will be constructed in 22 months and Complete Phase 1 with sour gas facilities will be constructed in 26 months. The project cost was developed by referring to third party cost estimates as part of FEED, to the most recent quotation from the vendor, and to the project cost owner. The Government had to approve the CAPEX of the project as part of the PSC scheme.
Monte Carlo simulation was used to calculate risks related to schedule and cost estimates and furthermore to establish realistic ones. The simulation showed that p75 falls within 28 months and MUSD 200 for project phase-1 completion. However, according to its commitment to the gas buyer, the company has to deliver gas within a maximum period of 22 months, which makes this project very challenging.
Using Bayesian Network to Model Drilling Fluids Practices in Saudi Arabia
Authors: Al-Yami Abdullah S. , Schubert Jerome 
Published: May 2012

AbstractTexas A&M University recently has established a new method to develop a drilling expert system that can be used as a training tool for young engineers or as a consultation system in various drilling engineering concepts such as drilling and completion fluids, cementing, completion, and underbalanced drilling practices. To the best of the authors knowledge there is no standards developed to aid drilling engineers and scientists to formulate effective drilling fluids systems for the entire well sections.The objective of this paper is to set a module that should aid drilling engineers when designing drilling fluids. A module was created based on several inputs. To create this module, we interviewed experts to gather the information required to determine best practices as a function of different probabilities. Drilling fluids formulations were gathered from Saudi Arabia fields to build up this model.The Bayesian approach was found suitable for designing expert system. The model can work as a guide to aid drilling engineers and scientists to design and execute optimum drilling fluids. Using this approach to build up expert systems is more flexible than using flow charts. Updating flow charts is time consuming and require redesigning them again to be used by different experts or in different fields. Using Bayesian network allows us to update our industry practices by updating the probabilities states mentioned in this paper.
Appraising the Performance of Cyclic Production Scheme through Reservoir Simulation, a Case Study
Authors: AI-Zahrani Tariq 
Published: May 2012

Abstract
Oil wells in mature fields with strong aquifer influx and the first row of producers near peripheral water injectors experience very high water cuts (above 80%), which cause lower oil production and increasing disposal costs.
To mitigate this situation, various production strategies have been implemented in this simulation study to reduce water production, optimize oil production and revive dead wells. One strategy is to implement a cyclic production scheme (CPS). The CPS requires alternate shutting and flowing of wells with high water cuts over predetermined time cycles. The main objectives of the cyclic strategy is to reduce water production by optimizing oil production, minimizing coning effect and having a better control of the uniform waterflood front to the up-dip producers. This strategy enhances the sweep efficiency, improving pressure maintenance and minimizing water production.
This simulation study assesses the effectiveness and the performance of CPS implemented in a reservoir simulation model of a mature oil field. Simulation runs with several scenarios were conducted to understand and optimize the impact of CPS. The simulation results provided the best cyclic production/shut-in period and showed significant advantages of applying CPS over the regular noncyclic production in all scenarios. In this study, more than 93 wells have been evaluated and most of these wells showed good overall oil recovery after applying the CPS strategy.
Solving the Complex Equation of Production Build-up via the Implementation of Integrating Processes: A Team Approach Pilot to Meet North Kuwait's Production Target
Authors: Chetri Hom B. , Al-Ajmi Hussain 
Published: May 2012

Abstract
Production has two components – the subsurface potential and the actual production to feed the export line. In North Kuwait, sub surface potential had never been an issue for any speculation. The most difficult part is to integrate all resources, synchronize with each other and create "wonderful symphony" leading to actual production delivery. Several processes have been developed and matured now to gear up the asset to meet the challenging production target for 2010–11 which indicates a jump in production by about 23% in a single year.
In this effort, major processes to play a key role are: Development Well Subsurface Selection Process to optimize the best wells in terms of potential; New Development Well Assurance Process with Key Opportunities for Improving integration with key service providers to NK Asset such as Drilling Group (rig schedule, materials); Production Operations (Flow line/header connections, process capacity); Water Handling (Flow line/header connections, Water injection Supply capacity); Artificial Lift to synchronize ESP equipment availability in line with the well/ rig availability, Project Management (Flow line installation & rationalization), Learning's from Post Appraisal of Wells drilled in last few years; Surveillance Plan - data acquisition, how new information helps to minimize reservoir uncertainties; Drilling & Completion Programs - appropriate technology choices to meet well and reservoir objectives such as multi-zone needs, rigless access for surveillance or interventions, NCWs and artificial lift requirements.
Novel Applications of Distributed Temperature Measurements to Estimate Zonal Flow Rate and Pressure in Offshore Gas Wells
Authors: Azim Reda Rabiee 
Published: May 2012

Abstract
Distributed Temperature Sensor (DTS) technology has recently developed to determine the zonal flow rate in gas/oil producing wells using the measured continuous temperature profile along the wellbore. Comapred to convenetial production logging tool (PLT), DTS has many advantages that can provide real time temperature data without any intervention.
Temperature logging applications described in early researches included, location of gas entries, detection of casing leaks and fluid movement behind casing, location of lost – circulation zones, and evaluation of cement placement.
Temperature logs are still used for these applications and others, but the most common use now is quanitative identification of injection or production zones. Despite the many other logs that have been developed, the temperature log remains the workhorse of the production logging stable. This is primarily because of its reliability; no matter what the wellbore flow conditions, temperature can be measured accurately, also the temperature logs tends to reflect the long term behavior of well, not just the current conditions.
This paper presents a new methodology developed to allocate gas rate and associated water of each individual layer using (DTS) and the total surface production of gas and water, also the pressure along the wellbore. The physics behind this model is based on steady-state gas-water flow in the wellbore, friction loss and Joule-Thomson effect in the wellbore, contrast in the thermal and physical properties of gas and water, wellbore heat losses due to unsteady heat conduction in the earth, and the mixing of the fluid streams of contrasting temperature.
The methodology allows users to run in two modes: forward simulation and flow profiling. The forward simulation mode calculates the temperature inside the wellbore at all producing layers at any given production profile to calibrate the model inputs. The flow profiling is used to estimate the production rate based on the measured temperatures using inversion technique. The implementation of the developed production allocation model is shown, in details, by using the data of two actual cases studies form Egyption offshore gaswells.