bluuebunny/crossref_metadata_2025_split huggingface dataset:
Depresión en pacientes con esquizofrenia ingresados en servicios de agudos del Hospital Psiquiátrico de La Habana
Authors: Llanes Basulto Yasmani , Barrios Hernández Yanquiel , Oliva Hernández Ignacio , Pimentel Noda Susel de la Caridad , Calvo Guerra Esvieta 
Published: September 2020

Se evalúa la presencia de depresión en la fase aguda de la esquizofrenia y se identifican las características clínicas y psicosociales que puedan estar asociadas a la depresión. Se estudiaron 73 pacientes ingresados en los servicios de agudos del Hospital Psiquiátrico de La Habana, identificándose que la depresión es un síntoma presente en una parte importante de los pacientes con esquizofrenia, el 35.6% de la muestra presentó síntomas clínicamente significativos, y relacionados significativamente con la ausencia de vínculo laboral, la separación de seres queridos y un mayor número de ingresos. Es importante considerar la depresión y sus causas para desarrollar estrategias de tratamiento eficaces en este tipo de pacientes.
COVID-19 Infection After a Total Knee Arthroplasty in a Patient with Hemophilia A
Authors: Taranchenko Yuri Lara , Martinez Garcia Fernanda , Benitez-Hidalgo Olga , Aguilar Marc , Massons Josep , Nuñez Jorge H. 
Published: September 2020

Case:
Minimal information is available regarding coronavirus disease-19 (COVID-19) patients with hemophilia A. Coagulopathy is a major pathophysiological characteristic of COVID-19; however, because of a paucity of data, it is not clear whether these patients with hemophilia are more or less prone to the severe form of the COVID-19 disease. We report the case of a hemophilic patient with confirmed COVID-19 after total knee arthroplasty.

Conclusion:
This case highlights the idea that patients with a congenital hypocoagulability stated as haemophilia may be protected against COVID-19 hypercoagulability-related adverse effects. Thromboprophylaxis with low–molecular-weight heparin should be evaluated in patients with hemophilia and COVID-19 disease.
The Treatment of Periprosthetic Distal Femoral Fractures After Total Knee Replacement
Authors: Quinzi David A. , Childs Sean , Lipof Jason S. , Soin Sandeep P. , Ricciardi Benjamin F. 
Published: September 2020

» Periprosthetic distal femoral fracture after total knee arthroplasty carries substantial morbidity and mortality regardless of fixation technique.» Surgical treatment is favored in most patients compared with conservative therapy because of high rates of nonunion, malunion, and reoperation after casting or bracing.» Internal fixation techniques including retrograde intramedullary nailing and locked plating are favored for surgical treatment in most fractures when bone stock in the distal fragment allows for appropriate fixation.» In the setting of deficient distal femoral bone stock or femoral component loosening, revision arthroplasty with distal femoral replacement is the favored technique.» Further studies with regard to the use of intramedullary nailing, locked plating, and distal femoral replacement are necessary to refine the indications for each technique and to define the use of combinations of these fixation techniques.
The usefulness of ascorbic acid degradation to analyze the effectiveness of water filtration in household water filter jugs
Authors: Jezierska Karolina , Podraza Wojciech , Sękowska Anna 
Published: September 2020

AbstractIntroduction: This study aimed to determine whether the degradation of ascorbic acid in aqueous solutions could be used to compare the filtration efficiency of various household water filter jugs.Materials and methods: Based on absorbance measurements of ascorbic acid, a new water quality coefficient (WQC) parameter was defined. Differences between the WQC were determined for 4 different water filters commonly used in household water filter jugs in Poland. In addition, correlations between the WQC, the amount of filtered water (AFW), and a number of other parameters were examined for all 4 filters.Conclusions: Significant differences were found in WQC among the 4 filters. A decreasing efficiency of calcium ion removal from the water was observed with the ongoing use of all 4 filter cartridges. Overall, this method could be a sensitive, simple, fast, eco-friendly, and relatively inexpensive tool for determining the effectiveness of water purification in household water filter jugs, which of course requires further research.
Colonic necrosis of vague aetiology presenting scarce clinical and radiological symptoms: a case report
Authors: Żyluk Andrzej , Jagielski Wojciech 
Published: September 2020

Abstract
Spontaneous colonic necrosis is very uncommon in a patient without predisposed disorders such as end-stage renal failure in dialysed patients, serious cardiac failure, sepsis, post-traumatic shock, and vascular surgery within an abdominal aorta. This paper presents the case of an elderly patient in whom necrosis of almost the whole colon had occurred within 2 days. At presentation the patient had no clinical symptoms or signs suggesting serious abdominal disease. There was also a lack of biochemical abnormalities and changes in angio-CT. Due to deterioration of the patient’s general condition, he underwent surgery which revealed necrosis of almost the whole colon. The necrotic colon was resected, followed by a terminal ileostomy. Despite the operation, the patient died 2 days after.
Properties and use of rosemary (Rosmarinus officinalis L.)
Authors: Pawłowska Katarzyna , Janda Katarzyna , Jakubczyk Karolina 
Published: September 2020

Abstract
Rosemary (Rosmarinus officinalis L.) is a spice herb found in most cuisines and in many spice blends on the Polish market. It deserves special attention, not only because of its unique taste and smell, but also due to a composition that provides health benefits. Its antimicrobial activity has been proven in relation to bacteria, fungi (including yeast) and viruses. Positive effects on the metabolism of carbohydrates and lipids, and the function of the nervous system, as well as hepatoprotective properties have been demonstrated. The plant itself and the extracts and essential oils obtained from it are used in home cooking, and the cosmetic and food industries. It also finds applications in agriculture as an animal feed additive.
The aim of the work was to review current scientific publications and present the properties and areas of use of rosemary.
Optimizing the Huff ‘n’ Puff Gas Injection Performance in Shale Reservoirs Considering the Uncertainty: A Duvernay Shale Example
Authors: Hamdi Hamidreza , Clarkson Christopher R. , Esmail Ali , Sousa Mario Costa 
Published: September 2020

SummaryRecent studies have indicated that huff ‘n’ puff (HNP) gas injection has the potential to recover an additional 30 to 70% oil from multifractured horizontal wells in shale reservoirs. Nonetheless, this technique is very sensitive to production constraints and is impacted by uncertainty related to measurement quality (particularly frequency and resolution) and lack of constraining data. In this paper, a Bayesian workflow is provided to optimize the HNP process under uncertainty using a Duvernay shale well as an example.Compositional simulations are conducted that incorporate a tuned pressure/volume/temperature (PVT) model and a set of measured cyclic injection/compaction pressure-sensitive permeability data. Markov-Chain Monte Carlo (MCMC) is used to estimate the posterior distributions of the model uncertain variables by matching the primary production data. The MCMC process is accelerated by using an accurate proxy model (kriging) that is updated using a highly adaptive sampling algorithm. Gaussian processes are then used to optimize the HNP control variables by maximizing the lower confidence interval (μ-σ) of cumulative oil production (after 10 years) across a fixed ensemble of uncertain variables sampled from posterior distributions.The uncertain variable space includes several parameters representing reservoir and fracture properties. The posterior distributions for some parameters, such as primary fracture permeability and effective half-length, are narrower, whereas wider distributions are obtained for other parameters. The results indicate that the impact of uncertain variables on HNP performance is nonlinear. Some uncertain variables (such as molecular diffusion) that do not show strong sensitivity during the primary production strongly impact gas injection HNP performance. The results of optimization under uncertainty confirm that the lower confidence interval of cumulative oil production can be maximized by an injection time of approximately 1.5 months, a production time of approximately 2.5 months, and very short soaking times. In addition, a maximum injection rate and a flowing bottomhole pressure around the bubblepoint are required to ensure maximum incremental recovery. Analysis of the objective function surface highlights some other sets of production constraints with competitive results. Finally, the optimal set of production constraints, in combination with an ensemble of uncertain variables, results in a median HNP cumulative oil production that is 30% greater than that for primary production.The application of a Bayesian framework for optimizing the HNP performance in a real shale reservoir is introduced for the first time. This work provides practical guidelines for the efficient application of advanced techniques for optimization under uncertainty, resulting in better decision making.
Highly Conductive Layers and their Role in the Development of Oil Fields of the Bazhen-Abalak Complex
Authors: Ipatov Andrey Ivanovich , Zhukovskaia Elena Anatolievna , Lazutkin Dmitriy Mikhailovich 
Published: September 2020

Abstract
Modern technology of drilling and construction of horizontal wells allows for effective development of complex oil fields hard-to-recover oil reserves includes off low-permeability (less than 1-2 mD) and hyper-low-permeable (0.01-0.0001mD) fields. The latter in Russia include Bazhen, Domanic and Achimov fields. Their development provides for the mandatory completion of HW with Multiple-Fractured Horizontal Wells (MFHW).
Experience in the development of layers of the specified type for Gazpromneft PJSC shows that the highest oil production rate is achieved if the MFHW system reveals not only the low-permeability rock matrix, but also captures the highly conductive (typically fractured) streaks — "strata-conveyors" (the latter may also be located in neighboring geological and stratigraphic differences). The difference in the permeability of such highly conductive layers and the hyper-low-permeable matrix of the host rocks can be very significant (up to 106!).
In addition to the positive aspects of the presence of highly conductive layers in the section associated with the achievement of high initial oil flow rates in new wells, in the process of further development, negative consequences may arise as a result of premature (even unpredictable) gas and water breakthroughs through narrow fractured layers. Is it possible to take into account the risks of loss of well productivity as a consequence of the pronounced geological heterogeneity of these fields, even if the scale of the impact of this heterogeneity is still difficult to assess by modern research methods?
In this paper analyzes some of the results of core, logging, well testing and indicator studies with the allocation of characteristic features indicating the presence of local highly conductive fractured layers in the section of the oil the Bazhen-Abalak complex (BAC).
Cyclical Gel-Polymer Flooding Technology is an Effective Method of Enhanced Oil Recovery in High-Viscosity Oil Fields
Authors: Lobanova Svetlana Yur’evna , Yelubaev Berdibek Ulanovich , Talamanov Nikolay Evgen’evich , Sun Zhijian , Wang Chunxi , Zhao Bo , Ismagilov Tagir Akhmetsultanovich , Telin Aleksey Geroldovich 
Published: September 2020

Abstract
The issue of increasing reservoirs recovery rate in non-uniform permeable high-viscosity oil reservoirs is considerably challenging, especially when the oil under reservoir conditions manifests its structural-mechanical properties, which is characteristic of the Buzachi North oil field. Its development using water flooding method has demonstrated that even moderate uptake of recoverable reserves is followed by injection water breakthrough to the production wells. As substantiated by the high median permeability quotient with a broad range of values, employment of a regular ("classical") polymer flooding technique for the task of aligning the oil displacement front, when instead of water a weak polymer solution is injected in high volumes (up to 30 % of pore volume), is of similarly low efficiency because of rapid polymer breakthrough to the production wells boreholes through fissures and "super reservoirs". This article presents development and field pilot tests results related to cyclical gel polymer flooding technology as applied under the conditions of the Buzachi North oil field productive reservoirs rich in high-viscosity oils. The technology implies an integral gel polymer action upon water-bearing strata of productive reservoirs via injection wells performed in several stages. During the first stage, fissures are isolated with water-swellable polymers or synthetic resins; during the second stage, profile log is aligned using high-viscosity hydrogels; finally, during the third stage, the oil is displaced with a low-viscosity hydrogel slug based on cross-linked acrylamide polymer. Based on laboratory and field research, optimal linear dimensions (fractions) of water-swellable resins have been selected, along with cross-linkers and their concentrations required to obtain high-viscosity gels under reservoir conditions; the optimal amounts of low-viscosity hydrogels to be injected at the displacement stage have been determined. The parameters of fissures and "super reservoirs" required for estimating the working amounts of injected gels at each stage are evaluated by means of tracer analysis performed immediately prior to the injection cycle start. The tests performed at 16 sites with Jurassic deposits and two sites with Cretaceous deposits of the Buzachi North oil field have demonstrated high technical and economic efficiency of the developed cyclic gel polymer flooding technology.
A Field Pilot Test on CO2 Assisted Steam-Flooding in a Steam-flooded Heavy Oil Reservoir in China
Authors: Qi Zongyao , Liu Tong , Xi Changfeng , Zhang Yunjun , Shen Dehuang , Mu Hertaer , Dong Hong , Zheng Aiping , Yu Kequan , Li Xiuluan , Jiang Youwei , Wang Hongzhuang , Li Huazhou , Babadagli Tayfun 
Published: September 2020

Abstract
It is challenging to enhance heavy oil recovery in the late stages of steam flooding. This challenge is due to the reduced residual oil saturation, the high steam-oil ratio, and the lower profitability. A field test of CO2-assisted steam flooding technology was carried out in the steam-flooded heavy oil reservoir in the J6 block of Xinjiang oil field (China). The field test showed a positive response to the CO2-assisted steam flooding treatment including a gradually increasing heavy oil production, a rise in formation pressure, a decrease in water cut, etc. The production wells in the test area mainly exhibited four types of production dynamics, while some production wells showed production dynamics that were completely different from those during steam flooding. After being flooded by CO2-assisted steam flooding, these wells exhibited a gravity drainage pattern without steam channeling issues, and hence could yield a stable oil production. Meanwhile, emulsified oil, together with CO2-foam, was observed to be produced in the production well, which agreed well with what was observed in the lab-scale tests. The reservoir-simulation-based prediction in the test reservoir shows that the CO2-assisted steam flooding technology can reduce the steam-oil ratio from 12 m3 (CWE)/t to 6 m3 (CWE)/t and yield a final recovery factor of 70%.
Selection Method of Activator for Indigenous Energized Microorganisms in Daqing Oilfield with Low Permeability Reservoirs
Authors: Zhou Xiaofeng , Gayubov Abdumalik Talat , Le Shihao , Yang Ying 
Published: September 2020

Abstract
In recent years, microbial enhanced oil recovery methods have been systematically applied in the Daqing oilfield in order to stimulate and increase oil production, remaining difficult to be recovered after polymer flooding. In this paper, a selection method of activator for indigenous energized microorganisms in Daqing oilfield with low permeability reservoirs was proposed.
Firstly, the number of microorganisms in samples taken from production and injection wells in the target block was measured. Based on the obtained results, the condition for the use of MEOR method in the studied well system was determined. Secondly, laboratory experiments were conducted on the culture of indigenous microorganisms and the optimal parameters of the activator for indigenous microorganisms was determined by the obtained experiment results. Thirdly, the concentration of indigenous microorganisms, the pH value, interfacial tension, the viscosity change of the crude oil and the amount of generated gas after the hydrocarbons metabolization were measured. Based on the values of the crude oil viscosity and the amount of generated gas, the optimal ratio of nutrients (glucose and corn steep liquor) that are part of the activator for indigenous microorganisms was determined.
The experimental results showed that when the ratio of nutrients (glucose and corn liquor) is equal to 1:2, the viscosity of the crude oil after the activation is minimal and the amount of generated gas after the hydrocarbons metabolization reaches the maximum value. The selected activator composition was used to culture indigenous microorganisms in samples taken from production wells in the studied well system. The pressure increase was observed due to the occurrence of biogas during the process of hydrocarbon degradation by microorganisms. In the further development of the Daqing field with low permeability reservoirs using microbiological methods, it is recommended to use the selected activator composition for the culture of indigenous microorganisms.
Integrated Approach Enabled Successful Delivery of the Longest Well on Odoptu-More Field for Russian National Oil Company
Authors: Shakhova Anna , Lebedeva Irina , Valshin Oleg , Famiev Robert , Marushkin Dmitry , Savinov Roman , Dementyev Alexander , Shatilov Alexey , Khakov Almaz , Shakirova Anastasia , Gaskov Dmitriy , Bochkarev Vladimir , Surmin Vladimir 
Published: September 2020

Abstract
This paper provides the results of the application of integrated approach to drill the longest extended reach well which has ever been drilled in Odoptu-more field (North Dome) in Sakhalin.
Although many extended reach drilling (ERD) wells have been already drilled by the operator in Odoptu-more field, extreme reach wells always require new solutions. Reaching remote reservoirs by applying standard well design of Odoptu-more field was not possible due to high standpipe pressure (SPP) and equivalent circulating density (ECD) in 8 ½-in production section. Engineering study resulted in partial upsize of a well design and change 9 5/8-in casing to liner followed by remaining challenges: 9 5/8-in liner could not be delivered to required depth due to string buckling.
Several key technical solutions were implemented in the project thus allowing to deliver the longest well accident-free. Those solutions included well design modification allowing to drill 8 ½-in production section to reach remote reservoirs and 9 5/8-in liner delivery to the required depth using "mud over air" flotation technique for the first time in the project.
Having applied integrated approach, the project team broke a new record in drilling the longest well at Odoptu-more field with total measured depth 8699m, ERD ratio 4.89 and Directional Difficulty Index (DDI) of 7.6 (Alistair W. Oag 2000).
Drilling extreme reach ERD well unlocked opportunities for the operator to reach and put into the production more distant offshore oil-bearing reservoirs from the land rig without changing existing pad facilities.
First Expandable Liner Hanger for Gas-Condensate well in Jurassic Formation, West Siberia
Authors: Klychkov Yevgeniy , Biryukova Maria , Lobanov Sergey , Pedraza Juan Camilo , Glebov Yevgeniy , Shokarev Ivan , Rudoy Viktor , Davletov Renat , Zorin Andrey 
Published: September 2020

Abstract
In the first quarter of 2019, a system of two gas-tight expandable liner hangers was successfully deployed for the first time in gas-condensate wells in the Jurassic formation, West Siberia, for the company NOVATEK-YURKHAROVNEFTEGAS LLC. The main operation was performed in the YG-2 reservoir of Middle Jurassic deposits associated with high-pressure gas condensate formation. The work was divided in two main stages and an additional run of the seal assembly (stinger) with an anchor-type locator.
Stage I, included the installation of a cemented gas-tight expandable liner hanger in open hole with alternative to rotate, reciprocate during running or cementing operations.
Stage II, included running of an additional expandable liner hanger (ELH) assembly, in combination with open hole hydraulic packers and multi-stage fracturing sleeves into the horizontal section. An additional stage included seal assembly deployment with the tubing production string to provide for successful stimulation of the production flow using multi-stage frac (MSF) with the subsequent transfer of the well to the operation stage.
15 in 1. Experience Utilization to Construct Multilateral Well with 15 Lateral Branches
Authors: Levanov Igor , Sirotin Denis , Levin Ilya , Efimov Roman , Lukyantseva Ekatarina , Oparin Ivan , Sultanov Ruslan , Grinchenko Vasiliy , Gorbov Alexander , Galitskiy Ivan , Nikitenko Igor 
Published: September 2020

Summary
This paper is a description of the approach to the construction of technologically complex and unique well with horizontal completion of 15 branches, the first in Russia and Eastern Siberia. The experience of multilateral technology (MLT) wells application along with detailed well planning and training of the involved personnel made it possible to cope with all challenges and to achieve record technological indicators.
Project issues:
High abrasive formations of the reservoir; VSS due to borehole enlargements and interbedding/stringers occurrence. High alternating bending moments during fishbone wells construction. Abnormal low formation pressure. Difficulties in fracture gradient prediction. Lack of reservoir pressure compensation in gas-oil-water zone (GOWZ) is a cause of mud loses. Extensive loads to the drill string.
The main of the trial project was to confirm the possibility of 15-branches MLT well drilling in the geological conditions of the region.