bluuebunny/crossref_metadata_2025_split huggingface dataset:
Quiste gigante de la glándula de Bartolino: reporte de caso y revisión de la literatura
Authors: Rivas-Perdomo Édgar E. 
Published: February 2020

Introducción: en el presente artículo se expone el caso de una paciente que tuvo un quiste gigante de la glándula de Bartolino, el cual alcanzó un diámetro de 10 cm. La paciente presentó algunas dificultades diagnósticas y terapéuticas por lo que fue necesaria la escisión de la glándula y la posterior reconstrucción de la vulva. El diagnóstico definitivo fue establecido por anatomía patológica. El caso se presenta con el objetivo de realizar una revisión de la literatura respecto al tratamiento.Materiales y métodos: se realizó una búsqueda de la literatura relacionada con el tema en las bases de datos electrónicas PubMed, SciELO, ScienceDirect y MD Consult, utilizando las palabras clave: "glándulas de Bartolino", "quistes" y "marsupialización". Además, se revisaron referencias de libros de textos.Conclusiones: la urgencia en el tratamiento depende de los síntomas de la paciente. Un quiste asintomático podría no requerir tratamiento. Sin embargo, la no mejoría dentro de las primeras 72 horas o la evolución hacia una forma de absceso requerirá un tratamiento quirúrgico de emergencia. Se ha descrito una amplia variedad de tratamientos que incluyen una serie de procedimientos quirúrgicos tales como: 1) incisión simple y drenaje, 2) fistulización o marsupialización, 3) colocación de un catéter de Word, 4) escleroterapia con alcohol, 5) aplicación de nitrato de plata y 6)ablación del quiste utilizando dióxido de carbono (CO2 ) con láser.
Leiomioma uterino en paciente con síndrome de Mayer-Rokitansky-Küster-Hauser: reporte de caso
Authors: González Mariño Mario Arturo , Pérez-Solano Mario 
Published: February 2020

Objetivo: el síndrome de Mayer-Rokitansky-Küster-Hauser (MRKH) es una malformación congénita del útero y la parte superior de la vagina en las mujeres que muestran características sexuales secundarias normales y cariotipo 46 XX. Puede ocurrir aplasia completa del útero en presencia de dos cuernos rudimentarios o hipoplasia uterina simétrica o asimétrica acompañada por aplasia de uno de los dos cuernos. Es poco frecuente la aparición de tumores en los rudimentos uterinos. Este caso se presenta con el objetivo de hacer una revisión de la literatura respecto a la asociación de leiomioma uterino y síndrome de MRKH.Materiales y métodos: se presenta el caso y se realiza búsqueda a través de MEDLINE en la página de PubMed con los términos "leiomyoma" y "Mayer-Rokitansky-Küster-Hauser syndrome". Se obtuvieron 8 referencias, de las cuales 7 se identificaron como pertinentes y se incluyeron en la revisión. Además, se hace una búsqueda manual de publicaciones relacionadas con la patología de base.Conclusión: el hallazgo de un leiomioma en el remanente uterino en el síndrome de MRKH es muy poco frecuente, con apenas unas cuantas publicaciones en la literatura médica. En esta paciente, con la impresión diagnóstica de leiomioma uterino, se prefirió realizar laparotomía dado el tamaño del tumor, donde se reportó la patología de biopsia por congelación y la definitiva como leiomioma.
AN IMPROVED PRE-FORECASTING ANALYSIS OF ELECTRICAL LOADS OF PUMPING STATION
Authors: Voloshko Anatolii V. , Bederak Yaroslav S. , Kozlovskyi Oleksandr A. 
Published: February 2020

Relevance of research. In order to reduce energy losses, an accurate and timely forecast of the amount of consumed electricity is necessary. Accurate forecasting of electrical loads of industrial enterprises and their divisions (productions, workshops, departments etc.) allows planning of normal operating conditions, concluding contracts for the electricity supply with the electricity supply company under more favorable conditions, and improving the electricity quality, which ultimately affects the final cost of the products produced by an enterprise. So far, more than 150 forecasting methods of electrical loads have been developed. Usually, the most convenient one is selected based on the forecaster experience by creating and analyzing several forecasting models in order to identify the best. Therefore, in order to simplify the forecasting procedure, it is necessary to develop the methodology for forecasting analysis. This methodology should enable canceling forecasting algorithms that will create lower quality forecasts. The main objective is to develop the methodology for making a forecasting analysis of power consumption on the example of a pumping station of an enterprise with a continuous cycle of work to increase the efficiency of energy consumption and implementation of energy-saving measures. Objects of research: the process of forecasting electrical loads of a pumping station of the enterprise with a continuous cycle of work. Methods of research: fundamental principles of the theory of electrical engineering, statistical methods for power consumption forecasting, the method for detecting the trend of radio signals, and fractal analysis of time series. Research results. The methodology for forecasting analysis of power consumption, which makes it possible to apply the most appropriate methods to forecast the operational power consumption, is developed. For the first time, the radio signal trend detection method is applied to identify the trend of electrical loads. The variation ranges of the fractal parameters of time series of electrical loads are established depending on the variation coefficient of the time series for different periods of time. The Brown method of exponential smoothing that is used to forecast the electrical loads, in the case of identifying the smoothing constant α is in the beyond set ( ), is further improved. The regularity of changes in the fractal parameters of time series of power consumption of a pumping station with an increase in the time series duration and their field of application are explained.
The Central-Splitting Approach for Achilles Insertional Tendinopathy and Haglund Deformity
Authors: Ricci A. Gianni , Stewart Matthew , Thompson David , Watson Benjamin Collier , Ashmyan Roman 
Published: February 2020

Background:
Insertional Achilles tendinopathy causes posterior heel pain at the insertion of the Achilles tendon, often in combination with a calcaneal exostosis, or Haglund deformity. Insertional Achilles tendinopathy often presents with a posterior osseous prominence and leads to calcification of the Achilles tendon
1
. Nonoperative treatment of these conditions includes activity modification, nonsteroidal anti-inflammatory agents, heel lifts, shoe modification, physical therapy focused on eccentric strengthening exercises, iontophoresis, and shock wave therapy. Nonoperative treatment will fail in approximately 50% of these cases, and such patients become candidates for surgical intervention
2,3
. Multiple surgical approaches have been described, including the medial J-shaped, lateral, Cincinnati transverse, double incision, and central-splitting approaches
4
. Currently, there is no consensus regarding the ideal approach. Recent literature has suggested that the central-splitting approach allows for adequate exposure of both the most commonly diseased area of the tendon and the calcaneal exostosis, with excellent postoperative pain and functional results
5–13
.

Description:
Place the patient in the prone position with the feet at the edge of the operating table. Make a full-thickness, 5 to 7-cm longitudinal incision centered over the Achilles tendon and the posterior aspect of the calcaneus. Make a central incision through the Achilles tendon. Sharply mobilize the medial and lateral slips and excise the diseased portion of the Achilles tendon. Expose the calcaneal exostosis and perform the calcaneal exostectomy with a microsagittal saw. Repair the remaining healthy-appearing Achilles tendon to the calcaneus with 2 suture anchors. An additional suture anchor or, alternatively, the double-row technique for the Achilles tendon repair may be used. Repair the central split in the Achilles tendon with absorbable suture. Close the soft tissue and skin in layers.

Alternatives:
Alternative approaches include the medial, lateral, or Cincinnati transverse incisions. The central-splitting approach is favored because of the excellent exposure of both the diseased tendon and the calcaneal exostosis. Additional augmentations to this procedure include a flexor hallucis longus transfer and a gastrocnemius recession.

Rationale:
This technique provides adequate exposure to the diseased Achilles tendon, calcific deposits, and calcaneal exostosis. Recent studies have demonstrated it to be a safe and effective technique with high patient-satisfaction scores
5–13
.
El leprosario de José Revueltas
Authors: Martínez Torres José 
Published: February 2020

Este artículo se enfoca en analizar ciertos aspectos técnicos de lo que José Revueltas denominó «realismo dialéctico-materialista», que consistía en mostrar las escenas y los personajes de mayor crudeza de la sociedad desde la perspectiva de un militante comunista. Esta poética la expuso en un breve ensayo que aparece como prefacio de la edición de 1961 de Los muros de agua y que el autor consideraba el aniversario número veinte de su carrera de escritor, ya que este, su primer libro, había aparecido en 1941. Se ejemplifican los principios literarios aludidos con algunos pasajes de la misma novela y se aprovecha una idea de Virginia Woolf a propósito de la enfermedad en la literatura.
A Holistic Approach in Establishing a Structured Framework to Maximize Production Availability through Integrated ESP Key Performance Indicators
Authors: Al-Khalaf Ahmed , Alquwizani Saud , AlSadah Hashim , Flippin Cleavant 
Published: February 2020

Summary
Managing large-scale electrical submersible pump (ESP) operations and assessing their performance can be a challenging task. Diverse operational environments, widely spread geographical areas, large ESP populations, and different service providers are some of the complications facing operators. Nonetheless, it is vital to the success of any artificial lift project to establish a performance evaluation structure that can effectively capture deficiencies and highlight improvements.
While many operators focus on run life statistics as the central key performance indicator (KPI) for ESPs, these types of statistics may not be sufficient in providing meaningful information to decision makers. Other important ESP performance parameters include ESP shutdowns (both planned and unplanned), restart time of tripped ESPs, commissioning time, failure rate, and the number of premature ESP failures. Thus, a comprehensive study was jointly initiated between an oil operator and ESP vendors to establish KPIs that drive improvements in all aspects. The selected KPIs were developed in a structure that ultimately focuses on maximizing production availability and revenue generation.
By constructing the ESP KPI framework, subpar performance areas were clearly visible by both the operator and the service provider. Decision makers were able to identify and act on fields that lag in performance while exerting efforts to improve underperforming service providers. Furthermore, regular meetings were conducted to review the established KPIs and recommend some action items, which might focus on either technical or operational solutions. Finally, KPI targets were set on the basis of the review of historical trends and were assigned to be challenging yet relevant and attainable. The followed practice can prove to be successful in forming a common ground where service providers can quantify losses by the operator as a result of ESP performance deficiencies.
Comprehensive data collection and keeping of ESP trips, failures, and replacements are critical to the success of this work. Regular review of field reports and well performance are imperative to accurately compute the various KPI formulas. In fact, many of the KPI calculations can be automated to capitalize on the available communication networks installed in the field to improve ESP monitoring and accurately assess their performance.
Effect of arsenic stress on 5-methylcytosine, photosynthetic parameters and nutrient content in arsenic hyperaccumulator Pteris cretica (L.) var. Albo-lineata
Authors: Zemanová Veronika , Popov Marek , Pavlíková Daniela , Kotrba Pavel , Hnilička František , Česká Jana , Pavlík Milan 
Published: February 2020

Abstract
Background Arsenic toxicity induces a range of metabolic responses in plants, including DNA methylation. The focus of this paper was on the relationship between As-induced stress and plant senescence in the hyperaccumulator Pteris cretica var. Albo-lineata (Pc -Al). We assume difference in physiological parameters and level of DNA methylation in young and old fronds as symptoms of As toxicity. Results The As accumulation of Pc -Al fronds, grown in pots of haplic chernozem contaminated with 100 mg As kg -1 for 122 days, decreased with age. Content of As was higher in young than old fronds. The highest As content was determined in old fronds of Pc -Al grown in pots with 250 mg As kg -1. The increase with age was confirmed for determined nutrients – Cu, Mg, Mn, S and Zn. A significant elevation of analysed nutrients was showed in old fronds. Arsenic accumulation affected DNA methylation status in fronds, but content of 5-methylcytosine (5mC) decreased only in old fronds of Pc -Al (from 25% to 12%). Determined photosynthetic processes showed a decrease of fluorescence, photosynthetic rate and chlorophylls of As treatments in both fronds. Water potential was decreased by As in both fronds. Thinning of the sclerenchymatous inner cortex and a reduction in average tracheid metaxylem in the vascular cylinder was showed in roots of As treatment. Irrespective to fronds age, physiological parameters positively correlated with a 5mC while negatively with direct As toxicity. Opposite results were found for contents of Cu, Mg, Mn, S and Zn. Conclusions The results of this paper point to changes in the metabolism of Pc -Al, upon low and high exposure to As contamination. The significant impact of As on DNA methylation was found in old fronds. Irrespective to fronds age, significant correlations were confirmed for 5mC and As toxicity. Our analysis of the very low water potential values and lignification of cell walls in roots showed that transports of assimilated metabolites and water between roots and fronds were reduced. As was showed by our results, epigenetic changes could affect studied parameters of As hyperaccumulator Pc -Al, especially in old fronds.
Multiple association analysis of loci and candidate genes that regulate body size at three growth stages in Simmental beef cattle
Authors: An Bingxing , Xu Lei , Xia Jiangwei , Wang Xiaoqiao , Miao Jian , Chang Tianpeng , Song Meihua , Ni JunQing , Xu Lingyang , Zhang Lupei , Li Junya , Gao Huijiang 
Published: February 2020

Abstract
Background: Body size traits as one of the main breeding selection criteria was widely used to monitor cattle growth and to evaluate the selection response. In this study, body size was defined as body height (BH), body length (BL), hip height (HH), heart size (HS), abdominal size (AS), and cannon bone size (CS). We performed genome-wide association studies (GWAS) of these traits over the course of three growth stages (6, 12 and 18 months after birth) using three statistical models, single-trait GWAS, multi-trait GWAS and LONG-GWAS. The Illumina Bovine HD 770K BeadChip was used to identify genomic single nucleotide polymorphisms (SNPs) in 1217 individuals.
Results: In total, 19, 29, and 10 significant SNPs were identified by the three models, respectively. Among these, 21 genes were promising candidate genes, including SOX2, SNRPD1, RASGEF1B, EFNA5, PTBP1, SNX9, SV2C, PKDCC, SYNDIG1, AKR1E2, and PRIM2 identified by single-trait analysis; SLC37A1, LAP3, PCDH7, MANEA, and LHCGR identified by multi-trait analysis; and P2RY1, MPZL1, LINGO2, CMIP, and WSCD1 identified by LONG-GWAS.
Conclusions: Multiple association analysis was performed for six growth traits at each growth stage. These findings offer valuable insights for the further investigation of potential genetic mechanism of growth traits in Simmental beef cattle.
The influence of balanced complex chromosomal rearrangements on preimplantation embryonic development potential and molecular karyotype
Authors: Li Gang , Shi Weiyi , Niu Wenbin , Xu Jiawei , Guo Yihong , Su Yingchun , Sun Yingpu 
Published: February 2020

Abstract
Background: Balanced complex chromosome rearrangements (BCCR) are balanced chromosomal structural aberrations that involve two or more chromosomes and at least three breakpoints. It is very rare in the population.The objective is to explore the difference of influence of three types of BCCR on early embryonic development and molecular karyotype.Results:Twelve couples were recruited including four couples of three-way rearrangements carriers (group A), three couples of double two-way translocations carriers (group B) and five couples of exceptional CCR carriers (group C). A total of 243 oocytes were retrievedin the seventeen preimplantation genetic testing (PGT) cycles, and 207 of these were available for fertilization.After intracytoplasmic sperm injection, 181oocytes normally fertilized. The rates of embryos forming on day3 in three groups were 87.88%, 97.78% and77.14%, which was significantly different (P=0.01). Compared with group B, the rate of embryo formation was statistically significantly lower in group C(P=0.01).Furthermore, the rates of high-quality blastocysts in three group were 14.71%, 48.15% and 62.96%, respectively, which was significantly different (P=0.00). Compared with group B andC, the rate of high-quality blastocysts in group A was statistically significantly lower (P=0.00;P=0.00).Comprehensive chromosome analysis was performed on 83 embryos, including 75 trophectodermcellsand 8 blastomeres. Except 7 embryos failed to amplify, 9.01%embryos were diagnosed as euploidy, and 90.91% were diagnosed as abnormal. As for group A, the euploid embryo rate was 10.71%and the abnormal embryo rate was 89.29%. In group B,the euploid embryo rate was 3.85%, the abnormal embryo rate was 96.15%. The euploid embryo rate was 13.04%, the abnormal embryo rate was 86.96% in group C.There were no significant differences among the three groups (P = 0.55).Conclusions:The lowest rate of high quality blastocysts has been for three-way rearrangements and the lowest rate of euploidy has been for double two-way translocations, although no significant difference. Different types of BCCR maybe have little effect on the embryonic molecular karyotype. The difference of influence of BCCR on early embryonic developmentandmolecular karyotypeshould be further studied.
Psychiatric disorders in children and adolescents in a middle-income Latin American country
Authors: Caqueo-Urízar Alejandra , Flores Jerome , Escobar Carolang , Urzúa Alfonso , Irarrázaval Matías 
Published: February 2020

Abstract
Background: Child and adolescent mental health has scarcely been studied in developing countries, though it is an important aspect of health. Mental health problems in youth often continue into adulthood if not diagnosed or treated in time.Methods: The Sistema de Evaluación de Niños y Adolescentes (SENA) [Child and Adolescent Evaluation System] was used to evaluate mental health indicators in a sample of students in Northern Chile. Two age-appropriate versions of the assessment were applied to a total sample of 5,043 students, which included an elementary education sample of 1,953 schoolchildren from fourth grade through sixth grade (ages 8 to 13 years), and a Secondary School sample of 3,090 schoolchildren from seventh grade (the last year of elementary school) through the last year of Secondary school (senior high school) (ages 12 to 19 years). For each group, the version of the assessment used was determined by the students’ grade level. Both samples included municipal, government-subsidized, and private schools.Results: In this student population, depression, anxiety, and behavioral disorders were the main mental health problems identified, and indicators revealed a progressive increase in cases over the years, coinciding with the global epidemiological scenario. Males showed a greater presence of externalizing behaviors related to mental health problems associated with aggression and defiant behavior. However, females showed the highest number of mental health issues overall, especially regarding problems related to internalization. There are significant differences between school types.Conclusions: Our sample population analysis indicates that early intervention is necessary for the diagnosis and treatment of youth, with the goal of reducing the probability that psychiatric disorders will be prolonged, evolving, and worsening in adulthood.
Psychometric Properties of Instrumented Postural Sway Measures Recorded in Community Settings in Independent Living Older Adults
Authors: Alqahtani Bader , Sparto Patrick J. , Whitney Susan L. , Greenspan Susan L. , Perera Subashan , Brach Jennifer S. 
Published: February 2020

Abstract
Background: In the last few decades, research related to balance in older adults has been conducted in lab-based settings. The lack of portability and high cost that is associated with the current gold standard methods to quantify body balance limits their application to community settings such as independent living facilities. The purpose of the study was to examine the relative and absolute reliability and the convergent validity of static standing balance performance using an accelerometer device .
Methods: A total of 131 participants (85% female, mean age 80 ± 8 years) were included for the validity aim, and a subsample of 38 participants were enrolled in the reliability testing (89% female, mean age 76 ± 7 years). The root-mean-square (RMS) and normalized path length (NPL) for sway in antero-posterior (AP) and medio-lateral (ML) directions were calculated for different standing balance conditions. Test-retest reliability was assessed over two testing visits occurring one week apart using the intraclass correlation coefficient (ICC) for relative reliability, and the minimal detectable change (MDC) was calculated for the absolute reliability. Spearman’s rank correlation coefficient was used to test convergent validity at baseline between balance measurements and related mobility measures.
Results: Reliability of balance performance using accelerometers was good to excellent with ICC values ranging from 0.41 to 0.83 for RMS sway and from 0.49 to 0.82 for NPL sway. However, the ICC during semi-tandem stance in A-P direction was 0.35, indicating poor reliability. The MDC of the sway measurements ranged from 2.4 to 9.4 for the RMS and 5.2 to 13.8 for the NPL. Balance measurements were correlated with mobility measurements.
Conclusions: Using a portable accelerometer to quantify static standing postural control provides reliable measurements in community settings.