bluuebunny/crossref_metadata_2025_split huggingface dataset:
EVALUACIÓN DEL MÉTODO DE IGNICIÓN PARA DETERMINAR MATERIA ORGÁNICA EN SUELOS DE LA PROVINCIA EL ORO-ECUADOR
Authors: BARREZUETA-UNDA S. , CERVANTES-ALAVA A. , ULLAURI-ESPINOZA M. , BARRERA-LEON J. , CONDOY-GOROTIZA A. 
Published: November 2020

El método de pérdida de peso por ignición (Loss On Ignition -LOI) se utiliza para estimar la materia orgánica del suelo (MOS) pero tiene sus ventajas y limitaciones, frente a otros métodos que lo calculan partiendo del carbono orgánico (CO). El objetivo del trabajo fue, calibrar el método LOI para utilizarlo en suelos de origen aluvial cultivados con cacao (Theobroma cacao L.). Se utilizaron 30 muestras de suelo extraída entre 0 a 30cm de profundidad, en las que se determinaron la MOS por LOI a 350, 430 y 600°C durante 2h y que fueron contrastadas con las determinaciones del por CO combustión seca (DC) y Walkley y Black (WB). Los valores obtenidos por LOI aumentaron de 3,46% <4,95%<7,66%, al incrementar la temperatura, siendo inferiores a los obtenidos con DC (1,85%) y WB (1,96%). El mejor ajuste lineal obtenido entre LOI y DC fue, a 430°C con un coeficiente de explicación (R2) igual a 0,83. Aunque el método LOI a 430°C fue el de mejor ajuste para ser utilizada en el cálculo de la MOS se deben realizar más repeticiones para un mejor modelo de calibración.
Employee Perception of Brand Value in the Jewelry Industry
Authors: Priskila Selvy , Darma Gede Sri 
Published: November 2020

This study aims to discuss the brand value proposed by John Hardy and, as jewelryretail, it can be seen from each of these brand values. This study uses a qualitativemethod with the interview technique or open questionnaire for gaining all employeesin the sales department of John Hardy, Indonesia. The data were collected andanalyzed by first reducing and presenting the data and finally concluding.Triangulation was also done to get the trustworthiness (data validity) so that it isexpected to provide valid data for research. It shows that community, artisanship, andÂ sustainability are much linked to the brand, and it is also tied together as well as beingÂ implemented. For that reason, John Hardy is required to know how to deliver theÂ information correctly to the customer, mention the company's history, the value, andÂ DNA (deoxyribonu-cleic acid) as the individual blueprint of every living thing, whichÂ makes it unique in the company.
Escenarios y estrategias para el aprendizaje transversal
Authors: Rosales López Carlos 
Published: November 2020

Los objetivos de este trabajo se proyectan en la identificación de importantes escenarios y estrategias para el desarrollo de aprendizajes transversales, con especial hincapié en la educación para la salud. Se ha utilizado una metodología basada en el análisis de documentos correspondientes a organizaciones internacionales como la UNESCO y a la Administración educativa (legislación).
Se han analizado tres destacados contextos o escenarios: la administración educativa, el centro escolar y la ciudad educadora. Y se destacan como estrategias relevantes la adaptación de la enseñanza a los problemas de las personas y de la comunidad y el establecimiento de vínculos de colaboración entre instituciones y profesionales. En el ámbito de la metodología se destaca el valor interdisciplinar de los Proyectos de las Escuelas Asociadas de la UNESCO.
De manera específica, en el trabajo se analiza la incidencia de la pandemia del coronavirus en el funcionamiento de los colegios, que se han visto obligados a cerrar, a impulsar metodologías alternativas y ahora enfrentan el delicado proceso de su reapertura. La enorme transcendencia de esta enfermedad hace necesario replantear el fortalecimiento de la educación para la salud en todos los escenarios, para el desarrollo de aprendizajes sobre la prevención y la promoción de estilos de vida saludables.
Notes on relative and correlative constructions in Gǝʿǝz
Authors: Kapeliuk Olga 
Published: November 2020

ዘሞትነ ንሕነ ወዘነገሥነ ንሕነ: The relative verb accompanied by its headnoun, forming a relative clause which functions as the equivalent of an adjective, is the normal construction in the Semitic languages. In Gǝʿǝz, however, it is the substantivized relative clause, in which the headnoun is missing, that is the most diversified in its function and probably statistically more frequent. These are the correlative clauses. They present some specific morpho-syntactic features; thus the feminine relative pronoun is not encountered in them and the number of the relative pronoun is consistently accorded with the putative headnoun. In the regular relative clauses the headnoun is a noun or an independent pronoun but also suffixed pronouns and whole sentences may be qualified by a relative clause. Nominal sentences are common as relative or correlative clauses. In case the predicate of the nominal clause is a substantive, a pronoun with copulative function is introduced preventing the confusion between the construction in question and a possessive complex with nota genetivi.
Childhood Cancer and the Risk of ESKD
Authors: Calderon-Margalit Ronit , Pleniceanu Oren , Tzur Dorit , Stern-Zimmer Michal , Afek Arnon , Erlich Tomer , Verhovsky Guy , Keinan-Boker Lital , Skorecki Karl , Twig Gilad , Vivante Asaf 
Published: November 2020

Background
Increasing cancer incidence among children alongside improved treatments has resulted in a growing number of pediatric cancer survivors. Despite childhood cancer survivors’ exposure to various factors that compromise kidney function, few studies have investigated the association between childhood cancer and future kidney disease.

Methods
To assess the risk of ESKD among childhood cancer survivors, we conducted a nationwide, population-based, retrospective cohort study that encompassed all Israeli adolescents evaluated for mandatory military service from 1967 to 1997. After obtaining detailed histories, we divided the cohort into three groups: participants without a history of tumors, those with a history of a benign tumor (nonmalignant tumor with functional impairment), and those with a history of malignancy (excluding kidney cancer). This database was linked to the Israeli ESKD registry to identify incident ESKD cases. We used Cox proportional hazards models to estimate the hazard ratio (HR) of ESKD.

Results
Of the 1,468,600 participants in the cohort, 1,444,345 had no history of tumors, 23,282 had a history of a benign tumor, and 973 had a history of malignancy. During a mean follow-up of 30.3 years, 2416 (0.2%) participants without a history of tumors developed ESKD. Although a history of benign tumors was not associated with an increased ESKD risk, participants with a history of malignancy exhibited a substantially elevated risk for ESKD compared with participants lacking a history of tumors, after controlling for age, sex, enrollment period, and paternal origin (adjusted HR, 3.2; 95% confidence interval, 1.3 to 7.7).

Conclusions
Childhood cancer is associated with an increased risk for ESKD, suggesting the need for tighter and longer nephrological follow-up.
Molecular Gene Expression of Toll-Like Receptors 4 & 10 in Cellular Subsets of Human Peripheral Blood among Patients with Prostatitis: Conventional, Real Time Pcr and DNA Sequencing Techniques
Authors: AlSaimary1 Ihsan , Aldhaheri Hussein , ALMusafer2 Murtadha 
Published: November 2020

The Aim of this study was to determine Immunogenetic expression of Toll-like receptor gene clusters related to prostatitis, to give acknowledge about Role of TLR in prostatitis immunity in men from Basrah and Maysan provinces. A case–control study included 135 confirmed prostatitis patients And 50 persons as a control group. Data about age, marital status, working, infertility, family history and personal information like (Infection, Allergy, Steroid therapy, Residency, Smoking, Alcohol Drinking, Blood group, Body max index (BMI) and the clinical finding for all patients of Prostatitis were collected , The molecular expression study include extracting DNA from blood of Prostatitis patients , Prostitis patients and Control group by using specific primers for conventional PCR and Real Time PCR , the amplification of all extracted DNA from blood samples was preform and confirm by using electrophoresis with (100volt/30min). The amplification of all extracted DNA from blood samples was preform and confirm by using electrophoresis with (100volt/30min) , the result of this estimation revealed that the amplified DNA(PCR product) was 227bp for TLR4 on agarose gel (1%) , (50voltage for 1hour ) with a presence 100% , (PCR product) was 279bp for TLR10 on agarose gel(1%) , (50volt/1hour) with a presence 80%. The results of the present study indicate that the Toll like receptor alleles associated with risk of prostatitis.
“Study of Etiology of Acute Scrotum and Its Management”
Authors: Potey Ketika , Bangar Ashish Shahurao , Kandi Anita , Jadhav Sarojini 
Published: November 2020

Introduction: Acute Scrotum is an emergency with vast number of differential diagnoses with potential to have short and long term complications. Low salvage rates are often secondary to misdiagnosis and delayed presentation. Late presentation remains the greatest cause of orchiectomy.Many studies had been conducted, on whether every patient of acute scrotum should be explored or not on solely clinical grounds.
Objective: The purpose of this study was to study the etiology, age incidence, the differential diagnosis and complications in patients with acute scrotum.
Methods: The present prospective observational study was carried out at a tertiary care centre from August 2015 to November 2017 amongst 102 patients diagnosed and admitted for acute scrotum.
Results: Out of 102 patients acute scrotum majority 74 (72.54%) had epididymitis and/or orchitis, 6 (5.88%) testicular torsion, 20(18.6%) pyocoele. In final diagnosis, we got 20 patients of pyocoele but only 17 patients were diagnosed clinically, while 3 patients were earlier diagnosed as epididymo-orchitis. Out of 6 patients of testicular torsion, in 3 patients we were able to save testis and bilateral orchiopexy was done. Out of 20 patients of pyocoele, 3 patients were complication of epididymo-orchitis and 2 of testicular torsion. In 8 patients with gangrenous testis orchiectomy was performed.
Conclusion: Overlap exists between testicular torsion and other conditions of acute scrotum in the younger population. The clinical manifestations, physical examination findings, and laboratory test results are helpful in distinguishing the etiology; however, ultrasonography and color Doppler help in the diagnosis and immediate treatment for testicular torsion.
AVALIAÇÃO DA TÉCNICA DE SOLARIZAÇÃO ATRAVÉS DO MONITORAMENTO DO PERFIL DE TEMPERATURAS DO SOLO
Authors: Muniz Paola Machado , Friedrich Thalía Lopes , Cassol Fabiano 
Published: November 2020

O presente trabalho tem por objetivo avaliar a técnica de solarização aplicado no município de Cerro Largo/RS, através do monitoramento do perfil de temperaturas do solo e da obtenção de correlações para determinar a temperatura do solo em função da temperatura do ar. A solarização foi aplicada em uma unidade experimental de 4 m² de área. Para o monitoramento das temperaturas, efetuado tanto no terreno não solarizado quanto no local de aplicação da técnica, foram utilizados 8 termopares do tipo K conectados a um registrador de dados FieldLogger. O estudo analisou as temperaturas da superfície do solo e das profundidades 0,10 m, 0,25 m e 0,40 m, por um período de trinta e três dias. Correlações foram obtidas a partir do método de regressão linear, no qual foi ajustado uma reta para os dados amostrais e analisado o coeficiente de determinação ajustado (R²) para cada caso. Obteve-se a temperatura máxima de 33,34 ºC na superfície do solo que não recebeu o tratamento, e 36,72 ºC na superfície do solo solarizado. O coeficiente de determinação para a área que não recebeu solarização variou entre 0,50 e 0,61, enquanto que para o solo solarizado, o R² variou entre 0,36 e 0,63.
Uncertainty in fertility intentions from a life course perspective: Which life course markers matter?
Authors: Kuhnt Anne-Kristin , Minkus Lara , Buhr Petra 
Published: November 2020

Objective: The aim of this study is to extend our knowledge about uncertainty in fertility intentions from a life course perspective. We want to find out if life course markers such as economic circumstances, relationship status, family size, and the so-called “biological clock” (getting older) influence uncertainty in fertility intentions. Uncertainty in fertility intentions is the state in which individuals are not sure whether they will have (more) children.
Background: Determining what drives uncertainty in fertility intentions may lead to a better understanding of fertility decision-making and its outcomes.
Method: We use German panel data (German Family Panel, pairfam) for three birth cohorts (1971-73, 1981-83, 1991-93), and employ multinomial fixed-effects logit models as well as bivariate analyses based on waves 1 to 11.
Results: Uncertainty in fertility intentions is volatile across an individual’s life course, serving as a transitional phase between certainly intending and not intending to have any (more) children. Approaching the end of the reproductive life span (getting older), separating from a partner, having two or more children, and, for men, subjective economic fears increase the odds of being uncertain.
Conclusion: By showing that uncertainty in fertility intentions is a volatile concept and that relevant life course markers shape this volatility, we provide new insights into the process of fertility decision-making.
Optimization of Polymer Flooding in a Heterogeneous Reservoir Considering Geological and History Matching Uncertainties
Authors: Ibiam Emmanuel , Geiger Sebastian , Demyanov Vasily , Arnold Daniel 
Published: November 2020

SummaryPolymer flooding offers the potential to recover more oil from reservoirs but requires significant investments, which necessitate a robust analysis of economic upsides and downsides. Key uncertainties in designing a polymer flood are often reservoir geology and polymer degradation. The objective of this study is to understand the impact of geological uncertainties and history matching techniques on designing the optimal strategy for, and quantifying the economic risks of, polymer flooding in a heterogeneous clastic reservoir.We applied two different history matching techniques (adjoint-based and a stochastic algorithm) to match data from a prolonged waterflood in the Watt Field, a semisynthetic reservoir that contains a wide range of geological and interpretational uncertainties. Next, sensitivity studies were carried out to identify first-order parameters that impact the net present value (NPV). These parameters were then deployed in an experimental design study using Latin hypercube sampling (LHS) to generate training runs from which a proxy model was created using polynomial regression. A particle swarm optimization (PSO) algorithm was employed to optimize the NPV for the polymer flood. The same approach was used to optimize a standard waterflood for comparison. Optimizations of the polymer flood and waterflood were performed for the history-matched model ensemble and the original ensemble.The optimal strategy to deploy the polymer flood and maximize NPV varies based on the history matching technique. The average NPV and the variance are predicted to be higher in the stochastic history matching compared to the adjoint technique. This difference is due to the ability of the stochastic algorithm to explore the parameter space more broadly, which created situations in which the oil in place is shifted upward, resulting in a higher NPV. Optimizing a history-matched ensemble leads to a narrow range in absolute NPV compared to optimizing the original ensemble. This difference is because the uncertainties associated with polymer degradation are not captured during history matching. The result of cross comparison, in which an optimal polymer design strategy for one ensemble member is deployed to the other ensemble members, predicted a decline in NPV but surprisingly still showed that the overall NPV is higher than for an optimized waterflood, even for suboptimal polymer injection strategies. This observation indicates that a polymer flood could be beneficial compared to a waterflood, even if geological uncertainties are not captured properly.
Technical De-Risking of in-Situ Residual Oil Saturation Change Through Single Well Tracer Test Pilot in Malaysian Offshore Field
Authors: Abdul Manap Arif Azhan 
Published: November 2020

Abstract
Field A is located offshore Malaysia, identified as the candidate for a pilot project to evaluate the effectiveness of alkali-surfactant (AS) slug to improve recovery factor through the reduction of residual oil saturation. The pilot project utilized single well chemical tracer test technique (SWCTT) to measure residual oil saturation (Sor) change near well bore. The pilot results could be used to evaluate the potential of this technology in a larger scope application later.
The pilot project faced challenging technical and operational obstacles: offshore location, high reservoir temperature, sea water as injection water, water softening facilities requirement, unmanned satellite platform with limited space, no on-site laboratory - just to list a few. In addition, stringent health, safety and environment (HSE) requirements needed to be complied to ensure the pilot operation was carried out in a safe and orderly manner. This paper will focus on the overall pilot design, planning and some results.
Case Study: Troubleshooting Centrifugal Compressor Trips Caused by High Vibration on Drive End Journal Bearing
Authors: Manikandan Arumugampillai , Anwar Zeeshan 
Published: November 2020

Abstract
Why can even the most reliable turbomachinery get tripped up? In some cases, it's all about bad vibrations--literally. This paper explores the challenges one site had with repeated centrifugal compressor trips caused by high vibration over a period of 25 days. It outlines the troubleshooting attempts made to remedy this issue, it's root cause, and the resulting solution.
This issue occurred at a site with a train configuration of gas turbine driven centrifugal compressors. After 48 hours of its first startup, the machine tripped due to high vibration at the compressor drive end. Initial attempts to fix the problem included checking the vibration probe gap voltage setting, as well as swapping vibrations probes. After these tasks were completed, the site again attempted to run the machine. 48 hours later, it tripped again. During this time, the vibration gradually increased, staying above the alarm of 50 microns and tripping at 70 microns. The trip setting was increased to 75 microns, but after restarting, the unit continued to trip due to high vibrations.
All components were removed and thoroughly examined. Clearances were measured per the standard checklist. The condition of the couplings was found to be normal. The journal bearing pads had minor scratches. The thrust bearing pads were not affected by the failure. Alignment readings were found to be normal. However, residual unbalance was found on the rotor.
This residual unbalance was found to be the root cause of the tripping issue. The journal bearing clearances were thus adjusted from 0.17 mm to 0.13 mm. It was also advised to perform high speed balancing checks in the manufacturer's facility. The lube oil inlet pressure was adjusted to meet the requirements for the new bearing clearance.
Adjusting the bearing clearance, along with the adjustments in lube oil inlet pressure, resulted in improved vibration readings. This case study provides the detailed analysis of the root cause of the frequent trips as well as the process that was followed to fix the problem.
Dual Casing Perforate Wash and Cement for Annular Isolation
Authors: Teo Choon Hoong , Bakri Faiz , Koh Qianhui , Mat Jusoh Muhammad Faizol , Bin Alias Saiful Hisham , Othman Azmi , Idris Syahiran , Thien Ronny 
Published: November 2020

Abstract
Following the successful proof of concept of the closed system dual casing perforate, wash and cement for environmental plug application in 2018 (SPE-193989-MS), the same system was optimized for 2 subsea wells to isolate a gas sand behind 2 casings (9-5/8" × 13-3/8" × 16" open hole).
Learning from recent operations, it was discovered that there is significant improvement achievable with specialized gun system, and refined washing and cementing parameters. Such improvement was critical to the success of the annular remediation and thus, the long-term isolation of the gas sand.
The first successful closed system dual casing perforate, wash and cement for annular isolation is discussed and evaluated in this paper.
Improving Cement Bond and Zonal Isolation in Deviated Production Casing Through the Application of a New Generation Environmentally Friendly Enhanced Spacer System
Authors: Al-Ajmi Abdullah , Al-Rushoud Abdulaziz , Al-Naqa Faisal , Chouhan Manoj , Al-Mekhlef Alanoud , Alasoosy Fawaz , Albohamad Dalal , Alshab Mustafa , Ismail Maizura 
Published: November 2020

Abstract
A successful cement job is a crucial element of obtaining and maintaining well integrity and ensuring safe and efficient hydrocarbon production. The success of cementation starts with a full understanding of good parameters such as formation characteristics and depends on a properly designed slurry and spacer system.
The most challenging part of cementing a wellbore is cementing one with a low fracture gradient. There's a high risk of formation breakdowns and hole instability if maximum allowable equivalent circulation densities (ECDs) are exceeded. In addition to severe losses and formation damage, the outcome includes inefficient placement of the cement that warrants time-consuming and costly operations to assure zonal isolation.
In Kuwait, first trial of a new generation of an environmentally friendly enhanced aqueous spacer system was used successfully in a highly deviated well for cementing the production casing covering shale formations. This paper discusses the design of the enhanced aqueous system and its technical features and benefits, which helped improve the cement bond and achieve zonal isolation.