bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of Layering on Incremental Oil Recovery From Tertiary Polymer Flooding
Authors: Zhou Y.. , Muggeridge A. H. , Berg C. F. , King P.. 
Published: April 2019

Summary
It has been demonstrated in both laboratory measurements and field applications that tertiary polymer flooding can enhance oil recovery from heterogeneous reservoirs, primarily through macroscopic sweep (conformance). This study quantifies the effect of layering on tertiary polymer flooding as a function of layer-permeability contrast, the timing of polymer flooding, the oil/water-viscosity ratio, and the oil/polymer-viscosity ratio. This is achieved by analyzing the results from fine-grid numerical simulations of waterflooding and tertiary polymer flooding in simple layered models.
We find that there is a permeability contrast between the layers of the reservoir at which maximum incremental oil recovery is obtained, and this permeability contrast depends on the oil/water-viscosity ratio, polymer/water-viscosity ratio, and onset time for the polymer flood. Building on an earlier formulation that describes whether a displacement is understable or overstable, we present a linear correlation to estimate this permeability contrast. The accuracy of the newly proposed formulation is demonstrated by reproducing and predicting the permeability contrast from existing flow simulations and further flow simulations that have not been used to formulate the correlation.
This correlation will enable reservoir engineers to estimate the combination of permeability contrast, water/oil-viscosity ratio, and polymer/water-viscosity ratio that will give the maximum incremental oil recovery from tertiary polymer flooding in layered reservoirs regardless of the timing of the start of polymer flooding. This could be a useful screening tool to use before starting a full-scale simulation study of polymer flooding in each reservoir.
Single Trip Multizone Perforation and Gravel Pack STPP: Success Story and Lessons Learned in Malaysian Application
Authors: Rozlan M Rizwan , Che Hamat W Afiq , Ishak M Faizatulizuddin , Chin Jennie , Gil Joel , Tan Chun Khai , Arsat Maisara , Elshourbagi Saeid , Syed Abd Rahim Sy Puteh , Abg Ahmad Khairunnisa , Ismail A Luttphi , Nguyen Truong Son , Ahmad Pauzi A Faris , Md A Jabar M Zawawi , A Satar Afzan , Misron M Al 
Published: April 2019

Abstract

Objectives/Scope
Downhole sand exclusion is becoming an essential sandface completion concept for brown fields in Peninsular Malaysia Oil Fields as reservoir pressure declines and formation sand weakens with production and water breakthrough. Additionally, multi-stack reservoirs require good zonal isolation to prevent cross flow between reservoirs with different pressure regime and to ensure gas and water breakthrough is delayed as long as possible. As such, Cased Hole Gravel Pack (CHGP) is the preferred method in many Malaysian fields. However, a lot of marginal fields become uneconomic due to the high cost and complexity of CHGP. Therefore, reducing CHGP’s cost and time becomes vital to ensure that projects improve the economics while at the same time ensuring good productivity from the reservoir.

Methods, Procedures, Process
Traditionally, CHGP is performed zone-by-zone whereby the process of sump packer installation, perforation run, deburr run, gravel pack assembly installation and gravel pumping is repeated for each zone. In most cases, fluid loss pill which induces impairment of the formation is required. The paper will highlight on the Alternate Path System (APS) which enables single trip multiple-zone gravel packing whereby a repetitive process is only performed once. Gravel mixed continuously with low friction viscoelastic surfactant fluid allows for transportation to the lower zones via shunt-tubes attached to the screens even at extended shunt length. The APS system is then combined with Drill Stem Test (DST) and Tubing Conveyed Perforating (TCP) equipment to make a whole system of Single Trip Multizone Perforation and Pack (STPP)

Results, Observations, Conclusions
STPP technology was deployed in a campaign of four deviated and high temperature oil wells in a marginal field whereby the rig time saving was up to three days per well translating to almost USD 1 MM of cost saving which boosted project’s economics. Furthermore, STPP technique allows for gravel packing operation without fluid loss pill and less completion fluid loss in the formation which translates to better formation productivity and less impairment.

Novel/Additive Information
Premature setting of GP Packer in one of the wells due to rupture disc failure within STPP system is the first such occurrence in the world. A lesson learned on how to ensure that it will not be repeated will be shared with all attendees.
Impact of Umoyo mother-infant pair clinics on HIV-positive mothers’ social support, perceived stigma and 12-month retention of their HIV-exposed infants in PMTCT Care: Evidence from a cluster randomised control trial in Zambia
Authors: Phiri Sydney Chauwa , Mudhune Sandra , Prust Margaret L , Haimbe Prudence , Shakwelele Hilda , Chisenga Tina , Mubiana-Mbewe Mwangelwa , Mzumara Maureen , McCarthy Elizabeth , Prescott Marta R 
Published: April 2019

Abstract
Background Public health systems in resource constrained settings have a critical role to play in the elimination of vertical HIV transmission but are unable to carry out some of the promising interventions such as mother-to-mother peer support programs due to financial constraints. This study is an evaluation of a mother-infant-pair clinic called Umoyo, which was designed to be scalable in a public health system due to the relatively low costs required. Umoyo clinics dedicate a clinic day to provide services to only HIV-exposed-infants (HEIs) and their mothers. Such models are in operation with reported success in Zambia but have not been rigorously tested. Methods A cluster randomized trial including 28 facilities was conducted across two provinces of Zambia to investigate 12-month retention of HEIs in care. These were facilities that were offering prevention of mother to child transmission (PMTCT) services and supported by the same implementing partner. Random allocation was achieved by use of the covariate constrained optimization technique. The primary outcome of interest was to establish whether Umoyo clinic days would improve 12-month retention of HEIs. Secondary outcomes included the impact of Umoyo clinics on social support and perceived HIV stigma among mothers. For each of the outcomes, a difference-in-difference analysis was conducted at the facility level using unweighted t-test. Results From 13 control and 11 intervention facilities, it was found that Umoyo clinics had no impact on 12-month retention of HEIs in the t-test (-11%; 99% CI: -40.1%, 17.2%). Regarding social support and stigma, the un-weighted t-test showed no impact though sensitivity tests showed that Umoyo had an impact on increasing social support and reducing perceived stigma from health care workers. Conclusion The Umoyo approach of having a dedicated clinic day for HEIs and their mothers did not improve retention of HEIs though there are indications that it can increase social support among mothers and reduce stigma. Without further support to the underlying health system, based on the evidence generated through this evaluation, the Umoyo clinic day approach on its own is not considered an effective intervention to increase retention of HIV-exposed infants.Trial Registration Pan African Clinical Trial Registry (PACTR201702001970148) Prospectively registered on January 13, 2017. URL https://pactr.samrc.ac.za/TrialDisplay.aspx?TrialID=1970
MRI and MRV features of a patient with Heat Stroke: a case report
Authors: Cao Lizhi , Wang Juan , Gao Yaxuan , Liang Yumei , Yan Jinhua , Zhang Yunhai , Zhu Mingqin , Chen Jiafeng 
Published: April 2019

Abstract
Background

Heat stroke (HS) is a critical illness that can cause multiple organ dysfunction including damage to the central nervous system (CNS), which can be life-threatening in severe cases. The brain image lesions of HS patient with CNS damage has been rarely reported before and usually variable in different cases, causing confusing to doctors when encounter these patients in the clinic. Cerebral venous thrombosis (CVT) is a rare cause of stroke that mostly affects young people and children. The pathogenesis of brain damage caused by HS is complex, CVT may be involved in the pathogenesis of HS with CNS damage. In this manuscript, we report a case of HS with CVT with symmetrical lesions in the bilateral putamen,posterior limb of internal capsule,external capsule, insula lobe, and subcortical white matter inside the brain.

Case presentation

We introduced a 48-year-old man who suffered from HS in the hot summer. At the time of admission, he showed high body temperature, coma and shock. Later, he had laboratory evidence of rhabdomyolysis syndrome, acute kidney and liver damage, electrolyte imbalance, acid-base balance disorders, and high D-dimer levels. After several days of anti-shock treatment, his level of consciousness has improved but his vision has declined. The cerebral magnetic resonance imaging (MRI) showed symmetrical lesions of the bilateral posterior limb of internal capsule,putamen,external capsule and insula, and subcortical white matter, and cerebral magnetic resonance venography (MRV) showed the formation of deep cerebral venous thrombosis (DCVT). Therefore, the anti-coagulation treatment was given to patient. After timely clinical intervention, the symptom of the patient was gradually improved.

Conclusions

The case shows that HS can cause CVT. Therefore, we believe that when we need to identify the cerebral MRI findings of HS, early MRV can greatly help the diagnosis of the disease, and can effectively improve the prognosis.
Comparison of Laboratory Features of Symptomatic and Asymptomatic Neurosyphilis
Authors: wu yali , Wu Wenqing , Huang Yuming , Xu Dongmei 
Published: April 2019

Abstract
Background Neurosyphilis is a chronic sexually transmitted disease involving central nervous system caused by Treponema pallidum and can affect any part at any stage of infection. Neurosyphilis was categorized as asymptomatic neurosyphilis and symptomatic neurosyphilis, and symptomatic neurosyphilis is very dangerous to human beings and can cause organic damage. However, its characteristics are not very clear. In this paper, we want to compare the laboratory characteristics of the asymptomatic neurosyphilis and symptomatic neurosyphilis. Methods A total of 118 eligible patients in Beijing Ditan Hospital were enrolled in this retrospectively registered study between February 2017 and June 2018. The clinical data were analyzed retrospectively, including age, sex, standardized treatment, serum Alb, neutrophil to lymphocyte ratio (NLR) , platelet-to-lymphocyte ratio (PLR), CRP, TRUST, as well as CSF TRUST, Alb, CSF WBCs, and CSF protein before treatment. Results Of the 118 patients, there were significant differences in age, serum TRUST, CSF TRUST, CSF protein, NLR, PLR,CSF-Alb/S-Alb and CRP between the two groups. According to multivariate regression analysis, CSF protein（OR1.051, 95%CI 1.015-1.088, P=0.005) and NLR (OR2.461, 95% CI1.321-4.584, P=0.005) were significantly associated to symptomatic neurosyphilis. Conclusions NLR and CSF protein levels should be taken into account as potential biomarkers of symptomatic neurosyphilis, especially NLR, as it is inexpensive parameters, noninvasive, and widely available, it can be used in clinical practice for prediction of symptomatic neurosyphilis.
Full Endoscopic Discectomy Using Transforaminal Endoscopic Spine System Technique: A Mini Review of Complications
Authors: Kapetanakis Stylianos , Chaniotakis Constantinos , Angoules Antonios G. 
Published: April 2019

Background:Full Endoscopic Discectomy (FED) is a minimally invasive technique for the treatment of Lumbar Disk Herniation (LDH) with increasing popularity among surgeons in the recent years. This alternative to conventional procedures surgical approach is generally a safe and efficient technique possessing many advantages such as less soft tissue trauma, preservation of dorsal musculature, and reduced perioperative morbidity and rapid recovery. However, FED is associated with a number of complications such as postoperative dysesthesia, nerve root injury, and dural tears.Methods:Α search of PubMed, Google Scholar and Scopus electronic databases was used to revised the literature on complications of full endoscopic discectomy using transforaminal endoscopic spine system techniqueConclusion:In this review complications associated with FED are analyzed, emphasizing on the potential beneficial role of Transforaminal Endoscopic Spine System (TESSYS) technique in reducing their frequency.
Role of Zno Nanoparticles in Enhancing the Antimicrobial Property of Nitrocellulose Lacquer Wood Finish
Authors: Shukla Shikhar , Kumar Shailendra , Nautiyal Ismita , V.S Kishan Kumar 
Published: April 2019

Background:
Mould growth on coated wood products during shipment is the foremost
apprehension for most of the wood industries in India. Well finished wood products tend to get
deposited by staining moulds superficially in high humidity conditions during shipment. Though wood
disfiguring fungi (stain moulds) normally have no significant effect on the mechanical properties of
timber, they only affect the aesthetic appearance of the material without destructing the wood cell wall.
This causes a huge economic loss to the manufacturer due to disfigurement of the appearance of wood
products.

Methods:
The aim of this work is to test and enhance antimicrobial property of Nitrocellulose lacquer
wood finish to prevent mould deposition on coated wood products. The work was carried out to screen
and evaluate the antimicrobial activity of commercial Nitrocellulose lacquer. Several patents regarding
antimicrobial activity of nano metal oxides have been visited. In order to enhance the mould resistance
of this coating, its combinations with neem oil and ZnO nanoparticles were prepared and tested against
the growth of staining moulds: Aspergillus niger and Penicillium sp. on the wood substrate of Melia
dubia. The study was carried out for 500 hours under favorable conditions (Temperature and Relative
Humidity (RH)) for the mould growth. The growth was analysed on the basis of surface area affected
by stain moulds on coated wood samples.

Results:
The growth analysis data inferred that the ZnO nanoparticles had significant effect against the
growth of stain moulds. The presence of ZnO nanoparticles increased the mould growth resistance of
Nitrocellulose lacquer coating to a great extent compared to the ability of neem oil for the same. This
finding demonstrates the potential use of nano ZnO for increasing the effectiveness of NC lacquer
against mould growth without hampering its other properties.

Conclusion:
1 % nano ZnO concentration in Nitrocellulose lacquer wood coating increased its efficacy
against staining mould growth by 95 %.
Pengaruh Kadar Timbal (Pb) Terhadap Kerapatan Stomata Dan Kandungan Klorofil Pada Glodokan (Polyalthia Longifolia Sonn) Sebagai Peneduh Kota Di Langsa
Authors: Suhaimi Suhaimi 
Published: April 2019

Influence levels of lead (Pb) in plants glodokan (Polyalthia longifolia
Sonn) against the density of stomata and chlorophyll was strongly influenced by differences in the number of motor vehicles and physical factors contained in Langsa. The purpose of this study is to determine the factors influencing the accumulation of lead (Pb) in the three streets in the city this Langsa. This research implemented in March 2014, analyzed at the Center for Research and Standard, tissue culture USU (Universitas Sumatera Utara) Medan. The research location is determined by using the method Purpasive Radom Sampling at the third street, namely: Jalan A. Yani, Jalan Sudirman and Jalan Medan B.Aceh. On the road A. Yani biggest influence is a motorcycle with a number of 4384 units, with the accumulation of lead (Pb)
Using Mathematical Models in Event Analysis from Military History
Authors: Neustroev S. S. , Serdyukov V. I. , Serdyukova N. A. , Shishkina S. I. 
Published: April 2019

One of the ways of knowing the events of military history is to reproduce them using mathematical models. Based on the analysis of the fighting operations of the 4th Panzer Brigade of the Red Army in the vicinity of the city of Mtsensk in early October 1941, the capability to provide mathematical modeling of the fragments of these combat operations and the application of the apparatus of Markov random processes for these purposes is substantiated.The effectiveness of tanks depends not only on their technical properties, but also on the ways they are used on the battlefield. At the same time, combat effectiveness of tanks is commonly understood as their effectiveness in conditions when the methods of conducting combat operations by each of the opposing sides are the best.The battle outcome is probabilistic. It has certain regularity, depending on the combat tactics. The battle can be imagined as a multitude of randomly dueling fights between tanks, differing in their location and range of fire. A study of the probability of a system transition from each transient state to the next leads to the construction of mathematical models that allow calculating the ratio of losses of opposing sides.Based on the facts of military history and discovered regularities, the mathematical models are constructed to allow reproducing various fragments of combat according to the scheme of the Markov random process, and on their basis calculations are performed. The dependence of the ratio of the losses of the opposing sides depending on the number of firing positions used by the ambush tanks was established, provided that the change of these positions was made imperceptibly for the enemy.The obtained results can be used to develop tactical methods of using tanks in antiterrorist operations.
TRUST MODERATION ROLE TOWARDS REVISIT INTEREST IN BANGSRING UNDERWATER TOUR
Authors: Widi Nugraha Kristian Suhartadi 
Published: April 2019

Tourist can voluntarily do sacrifice in order to get experience when during travel. The important in knowing the tour visitor behaviour can easily push the forming of tourist interest to revisit by minimizing marketing cost. This research aims to test the trust moderation role towards tourist revisit interest in Bangsring Underwater Tour Banyuwangi. Analysis technique used in this research is Moderated Regression Analysis (MRA) with data collection technique through questioner distribution and in-depth interview.This research done by taking respondent of 120 by purposive sampling method. This research result shows that there is no trust variable moderation effect that strengthen the connection between visitor experience with revisit interest. With multiple regression analysis testing proven that trust is predictor factor and together tourist experience and trust have significance impact toward tourist revisit interest Bangsring Underwater Tour increasing. Keywords: Trust, Consumer Experience, Revisit Interest
AusBrown: A new diachronic corpus of Australian English
Authors: Collins Peter , Yao Xinyue 
Published: April 2019

Abstract
This paper presents a newly-compiled diachronic corpus of Australian English (AusBrown). With four sampling time points (1931, 1961, 1991 and 2006), Aus-Brown is designed to match the current suite of British and American ‘Brown-family’ corpora in both sampling year and design. We provide details of the composition and compilation of AusBrown, and explore the broader context of its ‘Brown-family background’ and of complementary Australian corpora. We also overview research based on the Australian corpora presented, including several AusBrown-based papers.
Artistic and Educational Projects – Perspectives in Non-Formal Education. A Case Study
Authors: Turturică Ondina-Oana 
Published: April 2019

Abstract
The present article aims to analyze the impact of artistic and educational projects from the perspective of non-formal education. This will be done with the help of a case study that brings forth the aforementioned elements in order to improve the educational standards of the students that participate in these projects. Also, here will be detailed the specific objectives of the projects in this category and the impact imprinted on the target groups as well as the implementation manners of the objectives themselves, by following the factors that stimulate creativity and the degree of young people involvement in this project.
KEGAGALAN DAN PERBAIKAN PADA WORM SCREW PRESS PENGOLAH MINYAK KELAPA SAWIT (CPO) DENGAN METODE SIMULASI PEMODELAN GEOMETRIK MENGGUNAKAN AUTODESK INVENTOR 2013
Authors: Kamaharudin Syawaldi bin 
Published: April 2019

KEGAGALAN DAN PERBAIKAN PADA WORM SCREW PRESS PENGOLAH MINYAK KELAPA SAWIT (CPO) DENGAN METODE SIMULASI PEMODELAN GEOMETRIK MENGGUNAKAN AUTODESK INVENTOR 2013
Syawaldi, Dody Yulianto, Shandi Prastyo
Jurusan Teknik Mesin Universitas Islam Riau
syawaldi@eng.uir.ac.id

Abstrak
Worm screw press adalah salah satu komponen utama mesin pengekstraksi minyak mentah kelapa sawit (CPO) yang selalu mengalami keausan dan kegagalan dan patah. Masa pakai worm screw press di pabrik kelapa sawit sering tidak sesuai dengan rekomendasi waktu dari pabrik pembuatannya, keausan yang terjadi sehingga dapat menggangu kinerja mesin screw press dan menurunkan kapasitas hasil produksi CPO. Maka perlu dilakukan perbaikan pada worm screw press. Perbaikan yang dilakukan adalah dengan mengelas kembali (rebuild) permukaan yang aus tersebut dengan ketebalan lebih kurang 15 mm. Sehingga Worm screw press yang sudah diperbaiki ini dapat bertahan untuk jangka waktu lebih kurang 300-400 jam pemakaian. Analisa awal dilakukan dengan menghitung respon yang bekerja pada worm screw press akibat tekanan pada konus. Dari hasil simulasi software inventor didapat bahwa keausan terbesar terletak pada bagian ujung worm screw press yang mendapat tekanan langsung dari konus. Didapat jumlah prediksi keausan yang terjadi dalam 1 hari sebesar 66,8904 mm3/hari.
The Family Role in Fulfilling the Activities of Daily Living (ADLs) among Children with Autism Spectrum Disorder
Authors: Suprajitno Suprajitno , Arisky Frizcha Illah 
Published: April 2019

Children with autism spectrum disorder (ASD) have difficulty of activity and readability so that dependently to a parent or others. The study purpose to describe the family role in fulfilling of the Activities of Daily Living (ADLs) for children with ASD who gets service at Autism Center of Blitar City (Bahasa: Pusat Layanan Autis Kota Blitar). The study used descriptive-survey as a design to determine family roles among ASD children, the researcher purposively selected 34 families to be part of the study. Questionnaires were developed inspired by the theory of basic human needs and self-care and underwent validity and reliability tests. This study result showed that the family role in fulfilling the ADLs for children with ASD in the good category as many as 67.6% (23 families), in enough category as many as 29.4% (10 families), and in less category as many as 3.0% (1 family). Fulfillment of ADLs for children with ASD who need attention is the fulfillment of nutrition because parents must ensure that food that has entered into the mouth should be swallowed. Results also found out that inadequate nutrition affects childâ€™s with ASD growth and development. The study strongly recommends the roles of parents as vital in meeting the needs of the childrenÂ and stimulates development.