bluuebunny/crossref_metadata_2025_split huggingface dataset:
Locoregional Failure Rate After Preoperative Chemoradiation of Esophageal Adenocarcinoma and the Outcomes of Salvage Strategies
Authors: Sudo Kazuki , Taketa Takashi , Correa Arlene M. , Campagna Maria-Claudia , Wadhwa Roopma , Blum Mariela A. , Komaki Ritsuko , Lee Jeffrey H. , Bhutani Manoop S. , Weston Brian , Skinner Heath D. , Maru Dipen M. , Rice David C. , Swisher Stephen G. , Hofstetter Wayne L. , Ajani Jaffer A. 
Published: October 2013

Purpose The primary purpose of surveillance of patients with esophageal adenocarcinoma (EAC) and/or esophagogastric junction adenocarcinoma after local therapy (eg, chemoradiotherapy followed by surgery or trimodality therapy [TMT]) is to implement a potentially beneficial salvage therapy to overcome possible morbidity/mortality caused by locoregional failure (LRF). However, the benefits of surveillance are not well understood. We report on LRFs and salvage strategies in a large cohort. Patients and Methods Between 2000 and 2010, 518 patients with EAC who completed TMT were analyzed for the frequency of LRF over time and salvage therapy outcomes. Standard statistical techniques were used. Results For 518 patients, the median follow-up time was 29.3 months (range, 1 to 149 months). Distant metastases (with or without LRF) occurred in 188 patients (36%), and LRF only occurred in 27 patients (5%). Eleven of 27 patients had lumen-only LRF. Most LRFs (89%) occurred within 36 months of surgery. Twelve patients had salvage chemoradiotherapy, but only five survived more than 2 years. Four patients needed salvage surgery, and three who survived more than 2 years developed distant metastases. The median overall survival of 27 patients with LRF was 17 months, and 10 patients (37%) survived more than 2 years. Thus, only 2% of all 518 patients benefited from surveillance/salvage strategies. Conclusion Our surveillance strategy, which is representative of many others currently being used, raises doubts about its effectiveness and benefits (along with concerns regarding types and times of studies and costs implications) to patients with EAC who have LRF only after TMT. Fortunately, LRFs are rare after TMT, but the salvage strategies are not highly beneficial. Our data can help develop an evidence-based surveillance strategy.
Were Women and Young People the Heart of the Pinochet Regime? Rise and Decline of the Secretariats
Authors: de Zárate Verónica Valdivia Ortiz 
Published: October 2013

Abstract
This article focuses on the political role of the Secretariats of Women and Youth, which were created by Augusto Pinochet’s military regime, in an effort to unearth their underlying rationale. It departs from previous interpretations of these organizations that privilege the influence of foreign models in their formation, highlighting instead factors internal to Chile and seeking a more complete understanding of the dictatorship’s actions in regard to the secretariats. This analysis portrays the Chilean secretariats as different from their counterparts in other Southern Cone dictatorships. The trajectories of the secretariats followed the Chilean regime’s political evolution, as they served different goals and strategies and changed course as the government developed a more clearly defined political project, along with policies to carry such a project out.
The shallow thermal regime of Devils Hole, Death Valley National Park
Authors: Hausner Mark B. , Wilson Kevin P. , Gaines D. Bailey , Suárez Francisco , Tyler Scott W. 
Published: October 2013

Lay AbstractDevils Hole is an open, water‐filled fault in Ash Meadows National Wildlife Refuge that is home to the world's only population of endangered Devils Hole pupfish (Cyprinodon diabolis). In 1995, the population of Devils Hole pupfish began to decline, and to date no single cause for this decline has been identified. This article examines the influence of water temperature on the Devils Hole pupfish population by considering a part of the habitat that is critical to the pupfish's reproductive cycle: the shallow shelf at the south end of the pool. A mathematical model of the shallow shelf is used to examine the daily patterns of water flow and temperature change that result from the daily cycles of air temperature and solar radiation. The model matches well the data collected during this and other studies and shows that the shallow shelf of Devils Hole will respond to small changes in air temperature. Over the past 30 years, the southwestern United States has experienced an increase of up to 2 °C in average air temperature, and this increase has the potential to negatively affect the population of Devils Hole pupfish. The changes in local climate over this time period may have contributed to the decline of the Devils Hole pupfish population.
The effect of the Oxford uncemented medial compartment arthroplasty on the bone mineral density and content of the proximal tibia
Authors: Hooper G. J. , Gilchrist N. , Maxwell R. , March R. , Heard A. , Frampton C. 
Published: October 2013

We studied the bone mineral density (BMD) and the bone mineral content (BMC) of the proximal tibia in patients with a well-functioning uncemented Oxford medial compartment arthroplasty using the Lunar iDXA bone densitometer. Our hypothesis was that there would be decreased BMD and BMC adjacent to the tibial base plate and increased BMD and BMC at the tip of the keel.There were 79 consecutive patients (33 men, 46 women) with a mean age of 65 years (44 to 84) with a minimum two-year follow-up (mean 2.6 years (2.0 to 5.0)) after unilateral arthroplasty, who were scanned using a validated standard protocol where seven regions of interest (ROI) were examined and compared with the contralateral normal knee. All had well-functioning knees with a mean Oxford knee score of 43 (14 to 48) and mean Knee Society function score of 90 (20 to 100), showing a correlation with the increasing scores and higher BMC and BMD values in ROI 2 in the non-implanted knee relative to the implanted knee (p = 0.013 and p = 0.015, respectively).The absolute and percentage changes in BMD and BMC were decreased in all ROIs in the implanted knee compared with the non-implanted knee, but this did not reach statistical significance. Bone loss was markedly less than reported losses with total knee replacement.There was no significant association with side, although there was a tendency for the BMC to decrease with age in men. The BMC was less in the implanted side relative to the non-implanted side in men compared with women in ROI 2 (p = 0.027), ROI 3 (p = 0.049) and ROI 4 (p = 0.029).The uncemented Oxford medial compartment arthroplasty appears to allow relative preservation of the BMC and BMD of the proximal tibia, suggesting that the implant acts more physiologically than total knee replacement. Peri-prosthetic bone loss is an important factor in assessing long-term implant stability and survival, and the results of this study are encouraging for the long-term outcome of this arthroplasty.Cite this article: Bone Joint J 2013;95-B:1480–3.
Pediatrician-led Motivational Interviewing to Treat Overweight Children: An RCT
Authors: Davoli Anna Maria , Broccoli Serena , Bonvicini Laura , Fabbri Alessandra , Ferrari Elena , D’Angelo Stefania , Di Buono Annarita , Montagna Gino , Panza Costantino , Pinotti Mirco , Romani Gabriele , Storani Simone , Tamelli Marco , Candela Silvia , Giorgi Rossi Paolo 
Published: October 2013

OBJECTIVE:The aim of this study was to evaluate the effect of family pediatrician–led motivational interviews (MIs) on BMI of overweight (85th ≥BMI percentile ≥95th) children aged 4 to 7 years.METHODS:All the family pediatricians working in Reggio Emilia Province (Italy) were invited to participate in the study; 95% accepted. Specific training was provided. Parents were asked to participate in the trial if they recognized their child as overweight. Children were individually randomly assigned to MIs or usual care. All children were invited for a baseline and a 12-month visit to assess BMI and lifestyle behaviors. The usual care group received an information leaflet, and the intervention group received 5 MI family meetings. The primary outcome was the individual variation of BMI, assessed by pediatricians unblinded to treatment groups.RESULTS:Of 419 eligible families, 372 (89%) participated; 187 children were randomized to MIs and 185 to the usual care group. Ninety-five percent of the children attended the 12-month visit. The average BMI increased by 0.49 and 0.79 during the intervention in the MI and control groups, respectively (difference: –0.30; P = .007). MI had no effect in boys or in children whose mothers had a low educational level. Positive changes in parent-reported lifestyle behaviors occurred more frequently in the MI group than in the control group.CONCLUSIONS:The pediatrician-led MI was overall effective in controlling BMI in these overweight children aged 4 to 7 years, even though no effect was observed in male children or when the mother’s education level was low.
Permanent Supportive Housing: Addressing Homelessness and Health Disparities?
Authors: Henwood Benjamin F. , Cabassa Leopoldo J. , Craig Catherine M. , Padgett Deborah K. 
Published: October 2013

Permanent supportive housing (PSH) is an intervention to address long-term homelessness. Evidence has resulted in a shift in US policy toward using PSH rather than shelters and transitional housing.Despite recognizing that individuals transitioning from homelessness to PSH experience a high burden of disease and health disparities, public health research has not considered whether and how PSH improves physical health outcomes.Based on diverse areas of research, we argue that in addition to improved access to quality health care, social determinants of health (including housing itself, neighborhood characteristics, and built environment) affect health outcomes. We identify implications for practice and research, and conclude that federal and local efforts to end long-term homelessness can interact with concurrent efforts to build healthy communities.
Navigating the Boundaries of Emergency Department Care: Addressing the Medical and Social Needs of Patients Who Are Homeless
Authors: Doran Kelly M. , Vashi Anita A. , Platis Stephanie , Curry Leslie A. , Rowe Michael , Gang Maureen , Vaca Federico E. 
Published: October 2013

Objectives. We sought to understand interpersonal and systems-level factors relevant to delivering health care to emergency department (ED) patients who are homeless. Methods. We conducted semistructured interviews with emergency medicine residents from 2 residency programs, 1 in New York City and 1 in a medium-sized northeastern city, from February to September 2012. A team of researchers reviewed transcripts independently and coded text segments using a grounded theory approach. They reconciled differences in code interpretations and generated themes inductively. Data collection and analysis occurred iteratively, and interviews continued until theoretical saturation was achieved. Results. From 23 interviews, 3 key themes emerged: (1) use of pattern recognition in identifying and treating patients who are homeless, (2) variations from standard ED care for patients who are homeless, and (3) tensions in navigating the boundaries of ED social care. Conclusions. Our study revealed practical and philosophical tensions in providing social care to patients in the ED who are homeless. Screening for homelessness in the ED and admission practices for patients who are homeless are important areas for future research and intervention with implications for health care costs and patient outcomes.
Novel Technique and Guidelines for Measuring Reservoir Pressures in Tight Formations
Authors: Edelman Jeff , Shah Shabbir H. , Ahmed Ramy , Awadalla Tarek 
Published: October 2013

Abstract
It is very challenging to measure formation pressure in the low mobility formations of Eastern Desert, Egypt. The measured mobilities ranged from 0.01 to 5 mD/cP; making the acquisition of reliable formation pressure with conventional pretesting very difficult. Many pretests end up being recorded as ‘Dry’, ‘Tight’ and ‘Supercharged’. However, by exploiting the extreme limits of new generation formation testers such as low volume and relatively lower rates, we were able to overcome these difficulties and record valuable formation pressures.
The electromechanically controlled formation tester is specifically engineered for only pressure and mobility testing as opposed to multifunctional formation tester tool that also collects samples. The two important distinctions of this tool are an electromechanically controlled pressure pretest system that enables precise pretest volume and rate. This is in contrast to the hydraulically driven pretest mechanisms in conventional tools. Secondly, because the tool is devoted only to pretesting, it has a very small flowline volume with very tight mechanical construction. The required decompression volume is much smaller than conventional tools, brings new efficiency to the formation pressure testing process by significantly reducing both the time and risk involved with wireline formation testing operation.
The operating guidelines is prepared to recognize pressure measurement challenges in low mobility formations, it may assist engineers to identify the problems and take corrective measures by altering pretest volume and rate. Correct practice of taking right volume and rate may bring value to pretests whereas inexperience of pressure measurement in low mobility formations may cause significant damage to the data quality. Herein we have presented examples of good quality pretests changing into ‘Dry’ or ‘Tight’ by taking high volumes and also conversely the ‘Dry’ or ‘Tight’ pretests converting into good quality by optimizing pretest volumes.
Nitrogen Foam Flooding Test for Controlling Water Cut and Enhance Oil Recovery in Conventional Oil Reservoirs of China Offshore Oilfield
Authors: Ma Kuiqian , Jia Xiaofei , Yang Jing , Liu Yingxian , Liu Zongbin 
Published: October 2013

Abstract
SZ oilfield was put on production in China Bohai Bay in 1993, characterized by huge thickness, high permeability, severe heterogeneity and high oil viscosity (24-452cp). There are many challenges during water injection because high oil-water viscosity ratio leads to quick breakthrough of injected water, high increasing rate of water cut, and so on. In order to solve these problems, nitrogen foam flooding was conducted in SZ oilfield during 2010 to 2011. Before pilot test, laboratory experiments and reservoir numerical simulation study under field conditions were conducted to evaluate the performance of different foaming agent and foam stabilizing agent, blocking performance of foam systems with different gas-liquid ratio and injection method, the influences of reservoir heterogeneity, connectivity, water cut time on nitrogen foam flooding efficiency. The study shows that the rational gas-liquid ratio in SZ oilfield is 1:1-3:1, the optimum concentration of foam agent is 3000- 5000mg/L, the optimum foam stabilizing agent concentration is 700-1000mg/L, and the injection method should be mixed injection. The more heterogeneous, more connective, higher water cut the porous media is, the higher the increment of oil recovery and the better the efficiency of foam displacement.
The Hall curve analysis was used to evaluate the effectiveness of injection well and to calculate the resistance factor (RF) & residual resistance factor (RRF) (RF from 1.22 to 2.88, RRF from 1.06 to 2.00). The decline curve analysis was also used to obtain net incremental oil. Results from two well patterns conducted nitrogen foam flooding in 2011 indicate that water cut reduction ranged from 3.2 to 14.5%, accumulative oil production increases 30283m3 in a year and enhanced the oil recovery of the pilot about 0.5%, which suggests that nitrogen foam flooding has good prospect in conventional heavy oil reservoirs of china offshore oilfield.
Characterisation of Bowen Basin Coal Shrinkage and Geomechanical Properties and Their Influence on Reservoir Permeability
Authors: Connell Luke D , Mazumder Saikat , Marinello Stephen , Sander Regina , Camilleri Michael , Pan Zhejun , Heryanto Deasy 
Published: October 2013

Abstract
Coal reservoirs have a dual porosity, naturally fractured structure. As in other naturally fractured formations coal permeability is sensitive to the effective stress, decreasing exponentially as the effective stress increases. In contrast to other naturally fractured reservoirs, coal shrinks as gas desorbs. This shrinkage plays an important role in determining reservoir permeability behaviour as it leads to a geomechanical response that counteracts the effective stress increase due to the pore pressure drawdown during production. It has been shown that under the right conditions this shrinkage effect can lead to a rebound in the reservoir permeability.
There are a range of existing models for coal reservoir permeability behaviour that represent the coupled effects of pore pressure change and shrinkage, with the models by Shi and Durucan (2004, 2005) and Palmer and Mansoori (1996, 1998) finding widespread use. An important obstacle to the meaningful application of coal permeability models is characterisation of the various physical properties involved. There are also important questions about the behaviour of these properties with changes in pressure and effective stress. For example, many coal permeability models assume that the cleat compressibility and geomechanical properties are constant. This paper presents the results of a laboratory program of work to measure the coal properties that influence absolute reservoir permeability during gas production; these are matrix shrinkage, cleat compressibility, and the geomechanical properties (see Figure 1). These measurements were made on core samples from the Bowen Basin of Australia, an important area for coal seam methane production. The results are compared to the field based analyses of Mazumder et al. (2012).
Geomechanical Optimisation with Managed Pressure Drilling for Successfully Penetrating Challengeable Depleted Reservoirs in Offshore Sarawak, Malaysia
Authors: Fang Zhi , White Adrian , Tjengdrawira Agus , Ashat Fuad , Lee Chan Fong , Vince Tilley 
Published: October 2013

Abstract
Drilling new development or infill wells in a mature shallow water field, offshore Sarawak, Malaysia, is challenging. Reservoir depletion reduces the fracture gradient to a level such that drilling and cementing operations risk hydraulically fracturing the wellbore. To compound matters, intra-reservoir claystone sections are weak and require higher mud weights to maintain wellbore stability. As a result, the operational mud-weight window becomes very narrow, and drilling operations will be challenging using conventional drilling technologies. Without prior quantification of the operational mud window there is an increased risk of wellbore instability, lost circulation, and even loss of the hole.
A geomechanical study was undertaken for the field to understand the evolution of the fracture gradient due to depletion of the multiple sandstone reservoirs, the drilling risks associated with the large amounts of depletion, and to quantify operational mud- weight windows. The study used drilling and wireline log data from offset wells to derive the in situ stresses, formation pressures, androck strength properties. The results show that a tight drilling mud window exists through many of the depleted reservoirs, but these narrow mud-weight windows could be widened by casing off interim reservoirs that have undergone high depletion. The results were integrated into the final drilling plan. As a consequence, the managed pressure drilling was optimised to cope with narrow mud-weight windows, improving the capability of drilling the new well to total depth. This paper describes the practical geomechanical workflow that assists in understanding the drilling challenges in the depleted shallow water field and how the results should be adopted in well planning and drilling operations. The integrated geomechanical study and managed pressure drilling practice provide a feasible approach to mitigate drilling risks and minimise drilling costs. This approach can play a significant role in the wellplanning and drilling management of challenging depleted reservoirs.
A Dynamic Split Method to Predict Development Index in Heterogeneous Waterflooding Oil Field
Authors: Feng Qi-Hong , Wang Xiang , Wang Bo , Guo Long-Fei , Wang Duan-ping , Jia Jun-shan , Huang Ying-song 
Published: October 2013

Abstract
Considering the actual conditions of irregularity well arrangement and heterogeneity in reservoir, on the base of reservoir engineering theory, a method to predict residual oil distribution and dynamic development indexes has been proposed. The method first split the oil field into multiple units dynamically and each unit can be equivalent to homogeneous one, using the Buckley-Leverett waterflood theory to predict the dynamic development indexes of every unit and then calculate the entire reservoir development indicators. The oil saturation distribution was calculated by an interpolation algorithm.
The new method is used in three examples to comprehensively analyze the reliability, which include a nine-point homogeneous reservoir and a five-point heterogeneous reservoir and a full-field heterogeneous reservoir with irregular well pattern. Numerical simulation method is also used as contrast experiment in this paper. The results calculated by the two methods are matched relatively well in water cut and oil saturation distribution. In addition, reservoir models of different sizes are established to test the computational efficiency of the new method. Compared with the numerical simulation method, the new method speeds up the procedure more than tens of times.
The new method is of great significance to field application. Well placement optimization with stochastic optimization algorithms requires a large number of function evaluations, each of which entails a simulation run. The computational expense can be reduced by using the new method instead of the numerical simulation method to calculate objective function.