bluuebunny/crossref_metadata_2025_split huggingface dataset:
Full-Scale Physical Modeling of Stand-Alone Screens for Thermal Projects
Authors: Fattahpour Vahidoddin , Roostaei Morteza , Soroush Mohammad , Hosseini Seyed Abolhassan , Berner Kelly , Mahmoudi Mahdi , Al-hadhrami Ahmed , Ghalambor Ali 
Published: February 2020

Abstract
Standalone screens (SAS) have been widely employed as the main sand control solution in thermal projects in Western Canada. Most of the test protocols developed to evaluate screen designs were based on the scaled screen coupons. There have been discussions regarding the reliability of such tests on scaled coupons. This paper presents the results of the tests on full-scale wire-wrapped screen (WWS) and slotted liner coupons for typical McMurray Formation sands.
A large-scale sand control evaluation apparatus has been designed and built to accommodate all common SAS with 3 1/2″ in diameter and 12″ in height. The set-up provides the capability to have the radial measurement of the pressure across the sand pack and liner, for three-phase flow. We outline certain challenges in conducting full-scale testing such as establishing uniform radial flow and measuring the differential pressure. Produced sand is also measured during the test. The main outputs of the test are to assess the sand control performance and the mode of sanding in different flow direction, flow rates and flow regimes.
We were able to establish uniform radial flow in both high and low permeability sand packs. However, the establishment of the radial flow in sand packs with very high permeability was extremely challenging. The pressure measurement in different points in radial direction around the liner indicated a uniform radial flow. Results of the tests on a representative PSD from McMurray Formation on the WWS and slotted liner coupons with commonly used specs in the industry have shown similar sanding and flow performances. We also included aperture sizes smaller and larger than the common practice. Similar to the previous large-scale tests, narrower apertures are proven to be less resistant to plugging than wider slots for both WWS and slotted liner. Accumulation of the fines close to screen causes significant pore plugging, when conservative aperture sizes were used for both WWS and slotted liner. On the other hand, using the coupon with larger aperture size than the industry practice, resulted in excessive sanding. The experiments under linear flow seems more conservative as their results show higher produced sand and lower retained permeability, in comparison to the full scaled testing under radial flow.
This work discusses the significance, procedure, challenges and early results of full-scale physical modeling of SAS in thermal operation. It also provides an insight into the fluid flow, fines migration, clogging and bridging in the vicinity of sand screens.
Minimizing Calcium Lactate Precipitation Via the Addition of Gluconate Ions for Matrix Acidizing with Lactic Acid
Authors: Alhamad Luai , Miskimins Jennifer 
Published: February 2020

Abstract
Organic acids are commonly used to replace hydrochloric acid (HCl) in high reservoir temperature applications, as they are less corrosive and weaker than HCl. However, organic acids have shown some problems due to acid reaction product solubility. One such organic acid, lactic acid, produces calcium lactate when it reacts with calcite, which has a low solubility in water. However, reaction product solubility can be improved by up to five times when gluconate ions coexist with lactate and calcium ions. The objective of this research is to evaluate lactic and gluconic acid mixtures in term of dissolving calcite, reaction product, corrosion, wettability and generating dominant wormhole.
Lactic and gluconic acids were mixed together using deionized water and seawater to conduct calcite solubility tests. Corrosion tests, between 4 and 8 hours, were also run under reservoir conditions. Zeta potential measurements were performed to determine alterations in rock wettability. A formation response test (FRT) apparatus was used to run different coreflood tests using different combinations of injection rates and temperatures. These tests were accompanied with analytical results from ICP and IC to measure calcium, iron and sulfate ions in solution.
The results showed that mixing lactic and gluconic acids at a 1:1 molar ratio provided the optimal results as no precipitation occurred at total acids strengths of 10 wt% and up to 27 wt%. Seawater usage caused calcium sulfate precipitation; therefore, three scale inhibitors were evaluated to determine mitigation rates. Acid calcite-dissolving results were satisfactory when limestone was exposed to a 1:1 and 2:1 molar ratio of crushed core-to-acid ratios as at least 50% of the crushed core was dissolved. However, the two-acid mixture showed a corrosion rate that was higher than the acceptable rates and a trace of iron lactate precipitation occurred at 200 and 300°F. Five gpt from a sulfur-based corrosion inhibitor was enough to mitigate the corrosion rate to allow for eight hours of testing. Wettability alteration was noticeable due to the spent acid interaction with limestone rock and was the highest when high salinity seawater was used. Yet, the addition of corrosion inhibitor showed a reduction in the magnitude of zeta potential change. Coreflood tests showed that the mixture penetrated the tested core with minimal acid pore volume without any face dissolution or salt precipitation on the core faces.
This research presents a set of diverse experimental data to confirm lactic acid accompanied by gluconic acid can penetrate carbonate formation without any by-product precipitation. The two organic acids are less corrosive and less hazardous which can provide a safe operation environment and can decrease replacement and maintenance costs.
Hyperthermic intraperitoneal chemotherapy and ileal pouch-anal anastomosis: A case report
Authors: Chardalias Leonidas , Gklavas Antonios , Sotirova Ira , Vlachou Erasmia , Kontis John , Papaconstantinou Ioannis 
Published: February 2020

Abstract
Background: CRS and HIPEC are established treatments for peritoneal carcinomatosis that prolong survival in carefully selected patients, considered to be a loco-regional disease. At the time of diagnosis 4-7% of patients have metastasis to the peritoneum. There is a lack of evidence in the literature if J-pouch can be applied simultaneously with HIPEC in order to improve quality of life of this patient group. Case presentation: We describe a rare case of a 41 year-old Caucasian male with Familial Adenomatous Polyposis which was diagnosed as metastatic colorectal cancer in the liver and peritoneum. He was treated with systemic chemotherapy followed by total proctocolectomy with a J-shaped IPAA, liver metastasectomy, right hemidiaphragm resection, CRS and HIPEC. This is the first reported case of J- Pouch formation along with HIPEC Conclusions: J-Pouch after CRS and HIPEC can be offered as a treatment as long as the patient is carefully being selected, in high experienced centers and the perioperative findings allow it.
Tracing the source of blaCTX-M-15 producing ST34 Salmonella typhimurium isolated from feces and wound secretion
Authors: Qin Haiyan , Guo Yidan , Li Yikun , Zheng Rui 
Published: February 2020

Abstract
Background Salmonella enterica serovar typhimurium infection is common in food-borne diseases, isolating it from surgical incisions is rare. The aim of this study was to trace the transmission source of a surgical incision infected with Salmonella typhimurium in a Yunnan Province hospital patient and elucidate the underlying molecular mechanisms of antibiotic resistance. Methods Primers were designed to amplify the drug resistant genes by polymerase chain reaction (PCR). Susceptibility to antibiotics was determined using Etest. The identical macrorestriction profiles were analyzed by pulsed field gel electrophoresis (PFGE) using XbaI. The two isolates were characterized using an agglutination test and multilocus sequence typing (MLST). Results The MLST analysis revealed that isolates SM043 and SM080 belonged to the same genotype ST34, and the PFGE revealed that SM043 and SM080 had high similarity. The two S. typhimurium strains SM043 and SM080 were resistant to third generation cephalosporins. SM043 harbored blaCTX-M-15 , blaTEM-1 , qnrS-1 , qnrB , and acc-3 resistance genes, while blaCTX-M-15 , blaTEM-1 , blaCMY-2 , qnrS-1 , and acc-3 were detected in SM080. Conclusions The source of the surgical incision infection by S. typhimurium may be a hospital-derived transmission. Thus, it is critical to strengthen hospital sanitation by addressing hand hygiene and sterilization of the overall operational environment to avoid outbreaks of Salmonella nosocomial infections.
The Impact of Electronic Health Records on the Duration of Patients’ Visits: Time and Motion Study
Authors: Jabour Abdulrahman Mohammed 
Published: February 2020

Background
Despite the many benefits of electronic health records (EHRs), studies have reported that EHR implementation could create unintended changes in the workflow if not studied and designed properly. These changes may impact the time patients spend on the various steps of their visits, such as the time spent in the waiting area and the time spent with a physician. The amount of time patients spend in the waiting area before consultation is often a strong predictor of patient satisfaction, willingness to come back for a return visit, and overall experience. The majority of prior studies that examined the impact of EHR systems on time focused on single aspects of patient visits or user (physicians or nurses) activities. The impact of EHR use on patients’ time spent during the different aspects of the visit is rarely investigated.

Objective
This study aimed to evaluate the impact of EHR systems on the amount of time spent by patients on different tasks during their visit to primary health care (PHC) centers.

Methods
A time and motion observational study was conducted at 4 PHC centers. The PHC centers were selected using stratified randomized sampling. Of the 4 PHC centers, 2 used an EHR system and 2 used a paper-based system. Each group had 1 center in a metropolitan area and another in a rural area. In addition, a longitudinal observation was conducted at one of the PHC centers after 1 year and again after 2 years of implementation. The analysis included descriptive statistics and group comparisons.

Results
The results showed no significant difference in the amount of time spent by patients in the reception area (P=.26), in the waiting area (P=.57), consultation time (P=.08), and at the pharmacy (P=.28) between the EHR and paper based groups. However, there was a significant difference (P<.001) in the amount of time spent on all tasks between the PHC centers located in metropolitan and rural areas. The longitudinal observation also showed reduction in the registration time (from 5.5 [SD 3.5] min to 0.9 [SD 0.5] min), which could be attributed to the introduction of a Web-based booking system.

Conclusions
The variation in the time patients spend at PHC centers is more likely to be attributed to the facility location than EHR use. The changes in the introduction of new tools and functions, however, such as the Web-based booking system, can impact the duration of patients’ visits.
Screening for CKD To Improve Processes of Care among Nondiabetic Veterans with Hypertension
Authors: Peralta Carmen A. , Frigaard Martin , Rolon Leticia , Seal Karen , Tuot Delphine , Senyak Josh , Lo Lowell , Powe Neil , Scherzer Rebecca , Chao Shirley , Chiao Phillip , Lui Kimberly , Shlipak Michael G. , Rubinsky Anna D. 
Published: February 2020

Background and objectives
We conducted a pilot, pragmatic, cluster-randomized trial to evaluate feasibility and preliminary effectiveness of screening for CKD using a triple-marker approach (creatinine, cystatin C, and albumin/creatinine ratio), followed by education and guidance, to improve care of hypertensive veterans in primary care. We used the electronic health record for identification, enrollment, intervention delivery, and outcome ascertainment.

Design, setting, participants, & measurements
We randomized 1819 veterans without diabetes but with hypertension (41 clusters) into three arms: (1) CKD screening followed by patient and provider education; (2) screening, education, plus pharmacist comanagement; or (3) usual care. The primary clinical outcome was BP change over 1 year. Implementation and process measures included proportion screened; CKD detection rate; and total and new use of renin-angiotensin system inhibitors, nonsteroidal anti-inflammatory drugs, and diuretics.

Results
Median age was 68 years, 55% were white, 1658 (91%) had a prior creatinine measure, but only 172 (9%) had prior urine albumin/creatinine ratio, and 83 (5%) had a prior cystatin C measure. Among those in the intervention, 527 of 1215 (43%) were identified with upcoming appointments to have CKD screening. Of these, 367 (69%) completed testing. Among those tested, 77 (21%) persons had newly diagnosed CKD. After 1 year, change in systolic BP was −1 mm Hg (interquartile range, −11 to 11) in usual care, −2 mm Hg (−11 to 11) in the screen-educate arm, and −2 mm Hg (−13 to 10) in the screen-educate plus pharmacist arm; P=0.49. There were no significant differences in secondary outcomes in intention-to-treat analyses. In as-treated analyses, higher proportions of participants in the intervention arms initiated a renin-angiotensin system inhibitor (15% and 12% versus 7% in usual care, P=0.01) or diuretic (9% and 12% versus 4%, P=0.03).

Conclusions
The pragmatic design made identification, enrollment, and intervention delivery highly efficient. The limited ability to identify appointments resulted in inadequate between-arm differences in CKD testing rates to determine whether screening improves clinical outcomes.
RETROFIT SISTEM KONTROL MESIN PRESS DUST COVER DI LINE PRODUKSI MANUFAKTUR BERBASIS PROGRAMMABLE LOGIC CONTROLLER
Authors: Ardi Syahril , Rediyanto Rediyanto 
Published: February 2020

Mesin press dust cover merupakan salah satu mesin yang terdapat pada line produksi manufaktur yang berfungsi untuk menggabungkan komponen flange dengan komponen dust cover atau dapat disebut juga dengan companion flange. Kondisi mesin yang telah lama beroperasi menyebabkan mesin sering mengalami kerusakan,yaitu rata-rata kerusakan mencapai dua kali setiap bulan pada bulan Juni sampai November 2012. Hal ini disebabkan karena kondisi panel mesin yang tidak rapi dan sistem kontrol yang tidak standard. Seperti standard penggunaan warna dan ukuran kabel dan peletakan komponen elektrik. Selain itu tidak adanya buku manual operational mesin pada pihak maintenance. Proses perbaikan mesin yang dilakukan membutuhkan waktu cukup lama yaitu rata-rata diatas 10 menit, sehingga kondisi ini dapat menggangu proses produksi yang berlangsung. Untuk menanggulangi masalah tersebut maka dilakukan pergantian sistem kontrol mesin sesuai dengan standard dan kebutuhan perusahaan. Standard dan kebutuhan tersebut meliputi penggunaan kabel dan komponen-komponen lainnya serta menggunakan PLC (Programmable Logic Controller) pada sistem kontrolnya. PLC yang digunakan yaitu PLC mitsubishi FX1N-40MR. Hasil dari pergantian sistem kontrol yang dilakukan yaitu dapat mengurangi intensitas kerusakan mesin yang sebelumnya rata-rata kerusakan mencapai dua kali setiap bulan menjadi tidak pernah mengalami kerusakan selama periode pengujian bulan Januari sampai Mei 2013 dan sistem kontrol yang baru telah memenuhi standard perusahaan seperti penggunaan kabel dan peletakan komponen. Selain itu mesin ini selanjutnya dilengkapi dengan buku manual operation yang digunakan untuk mempermudah perawatan dan perbaikan mesin oleh maintenance.Kata Kunci : Retrofit, mesin press dust cover, Sistem Kontrol, PLC
ANALISA PENGARUH ARUS PENGELASAN SMAW PADA MATERIAL BAJA KARBON RENDAH TERHADAP KEKUATAN MATERIAL HASIL SAMBUNGAN
Authors: Hamid Abdul 
Published: February 2020

Pengelasan menurut DIN (Deutsche Industrie Norman) adalah ikatan metalurgi pada sambungan logam atau logam paduan yang dilaksanakan dalam keadaan lumer atau cair. Dengan kata lain, pengelasan merupakan penyambungan dua buah logam menjadi satu dilakukan dengan jalan pemanasan atau pelumeran, dimana kedua ujung logam yang akan disambung dibuat meleleh dengan busur menyala atau panas yang didapatkan dari busur nyala listrik (gas pembakar). Dalam penelitian ini dilakukan pemakaian arus yang berbeda pada tiap spesimen, material yang digunakan S355JO, eletroda E7018-1 diameter 2,6mm posisi pengelasan mendaki(vertical),arus yang digunakan 70A, 75A, 80A. dalam pelaksanaan pengelasan menggunakan metode pengelasan SMAW (Shielded Metal Arc Weldin). Kemudian diambil nilai impak metode Charpy pada daerah logam las dan nilai kekerasan metode Vickers didaerah logam induk, HAZ, dan logam las. Dari hasil penelitian impak metode Charpy, nilai arus pengelasan 80A lebih tinggi dari pada arus pengelasan 70A dan 75A. Sedangkan angka kekerasan arus pengelasan 70A mendapatkan kekerasan yang lebih tinggi dari arus pengelasan 75A dan 80A.Kata kunci :Interpolasi, SMAW, E7018-1, Vickers, Charpys
Time to Revisit Forum Non Conveniens in the UK? Group Josi Reinsurance Co v UGIC
Authors: Bougen Christopher D 
Published: February 2020

There has been much debate in the United Kingdom over the last decade on whether the discretionary doctrine of forum non conveniens is compatible with the mandatory provisions of the Brussels Convention on jurisdiction issues in the European Union. A recent decision of the European Court of Justice has answered affirmatively the question of whether a plaintiff domiciled in a non-Contracting State can invoke the rules of the Covention. The Court has arguably not settled the more fundamental question of whether the Convention applies to conflicts of jurisdiction between courts of a Contracting State and non-Contracting State. However, there is evidence of a growing acceptance of an expansive view of the scope of the Convention. Such a development would bring welcome simplicity to cross-border litigation in the UK.
Types of Neurosurgical Patients Requiring Tracheostomy- Institution Based Study
Authors: Rajbanshi Jagat Narayan , Yadav Arbindra Kumar , Thapa Dinesh Kumar , Karki Karuna Tamrakar 
Published: February 2020

Background and purpose: Tracheostomy is common surgical procedure among neurosurgical patients who are ventilater dependent for prolonged period of time in neuro ICU. With the objective to analyzed various type of neurosurgical patients requiring tracheostomy this study was performed.
Material and method: This is a Crossectional , Analytical stydt with Non probability consecutive sampling over the duration of 2 years. Association between age vs categories of different pathologies and Gender is categories of different neurological pathologies were analysed using Chi square test/fishers exact test wherever applicable using SPSS20.
Result: There were total of 85 patients who underwent tracheostomy for various types of pathologies in our institute over the duration of two years. Mean age of patients who undergone tracheostomy was 45.26 ( SD 18.9) years and they ranged between 8 and 86 years. Among all these categories head injuries accounted for 45% of cases followed by ICH (28%).
Conclusion: Head Injury and intracerebral hemorrhage seems to be the common pathology requiring tracheostomy in tertiary neurosurgical centre. Young and male patients are more predominant in this study.
Endoscopic third ventriculostomy with choroid plexus cauterization for the treatment of infantile hydrocephalus in Haiti
Authors: Shah Ashish H. , LaFortune Yudy , Ibrahim George M. , Cajigas Iahn , Ragheb Michael , Chen Stephanie H. , Barthélemy Ernest J. , Henry Ariel , Ragheb John 
Published: February 2020

OBJECTIVEUntreated hydrocephalus poses a significant health risk to children in the developing world. In response to this risk, global neurosurgical efforts have increasingly focused on endoscopic third ventriculostomy with choroid plexus cauterization (ETV/CPC) in the management of infantile hydrocephalus in low- and middle-income countries (LMICs). Here, the authors report their experience with ETV/CPC at the Hospital Bernard-Mevs/Project Medishare (HBMPM) in Port-au-Prince, Haiti.METHODSThe authors conducted a retrospective review of a series of consecutive children who had undergone ETV/CPC for hydrocephalus over a 1-year period at HBMPM. The primary outcome of interest was time to ETV/CPC failure. Univariate and multivariate analyses using a Cox proportional hazards regression were performed to identify preoperative factors that were associated with outcomes.RESULTSOf the 82 children who underwent ETV/CPC, 52.2% remained shunt free at the last follow-up (mean 6.4 months). On univariate analysis, the ETV success score (ETVSS; p = 0.002), success of the attempted ETV (p = 0.018), and bilateral CPC (p = 0.045) were associated with shunt freedom. In the multivariate models, a lower ETVSS was independently associated with a poor outcome (HR 0.072, 95% CI 0.016–0.32, p < 0.001). Two children (2.4%) died of postoperative seizures.CONCLUSIONSAs in other LMICs, ETV/CPC is an effective treatment for hydrocephalus in children in Haiti, with a low but significant risk profile. Larger multinational prospective databases may further elucidate the ideal candidate for ETV/CPC in resource-poor settings.
Anterior peri-insular quadrantotomy: a cadaveric white matter dissection study
Authors: Gonzalez-Lopez Pablo , Cossu Giulia , Pralong Etienne , Baldoncini Matias , Messerer Mahmoud , Daniel Roy Thomas 
Published: February 2020

OBJECTIVEAnterior quadrant disconnection represents a safe surgical option in well-selected pediatric patients with a large frontal lobe lesion anterior to the motor cortex. The understanding of the anatomy of the white matter tracts connecting the frontal lobe with the rest of the cerebrum forms the basis of a safe and successful disconnective surgery. The authors explored and illustrated the relevant white matter tracts sectioned during each surgical step using fiber dissection techniques.METHODSFive human cadaveric hemispheres were dissected to illustrate the frontal connections in the 3 planes. The dissections were performed from lateral to medial, medial to lateral, and ventral to dorsal to describe the various tracts sectioned during the 4 steps of this surgery, namely the anterior suprainsular window, intrafrontal disconnection, anterior callosotomy, and frontobasal disconnection.RESULTSAt the beginning of each surgical step, the U fibers were cut. During the anterior suprainsular window, the superior longitudinal fasciculus (SLF), the uncinate fasciculus, and the inferior fronto-occipital fasciculus (IFOF) were visualized and sectioned, followed by sectioning of the anterior limb of the internal capsule. During the intrafrontal disconnection, the SLF was cut, along with the corona radiata. At the medial surface the cingulum was sectioned. The anterior callosotomy disconnected the anterior third of the body of the callosum, the genu, and the rostrum. The frontobasal disconnection addressed the last remaining fibers connecting the frontal lobe with the rest of the hemisphere, namely the anterior limb of the anterior commissure.CONCLUSIONSThe anterior peri-insular quadrantotomy aims at effectively treating children with large lesions of the frontal lobe anterior to the motor cortex. A precise understanding of the gyral anatomy of this lobe along with the several white matter connections is crucial to avoid motor complications and to ensure complete disconnection.