bluuebunny/crossref_metadata_2025_split huggingface dataset:
Serological and Molecular Biological Studies of Parvovirus B19, Coxsackie B Viruses, and Adenoviruses as Potential Cardiotropic Viruses in Bulgaria
Authors: Ivanova Stefka Kr. , Angelova Svetla G. , Stoyanova Asya P. , Georgieva Irina L. , Nikolaeva-Glomb Lubomira K. , Mihneva Zafira G. , Korsun Neli St. 
Published: January 2017

AbstractBackground:Inflammatory diseases of the heart (myocarditis, pericarditis) are commonly caused by viruses. Among the human cardiotropic viruses, parvovirus B19, Coxsackie B viruses, and adenoviruses play a leading role.Aim:The aim of the present study was to determine the presumptive causative role of parvovirus B19, Coxsackie B viruses, and adenoviruses in the development of myocarditis, pericarditis and dilated cardiomyopathy by demonstrating the presence of specific antiviral antibodies or viral DNA in patients’ serum samples.Materials and methods:We tested serum samples collected between 2010 and 2014 from 235 patients with myocarditis (n=108), pericarditis (n=79), myopericarditis (n=19), dilated cardiomyopathy (n=7), and fever of unknown origin accompanied by cardiac complaints (n=22). The mean age of patients with the standard deviation was 33 ± 18 years. Serological and molecular methods (ELISA for specific IgM/IgG antibodies to parvovirus B19 and IgM antibodies to Coxsackie B viruses and adenoviruses, and PCR for detection of parvovirus B19 in serum samples, respectively) were used in the study.Results:Of all tested 235 serum samples, in 60 (25.5%) positive results for at least one of the three tested viruses were detected. Forty out of these 235 serum samples (17%) were Coxsackie B virus IgM positive. They were found in 17% (18/108) of the patients with myocarditis, in 15% (12/79) of those with pericarditis, in 16% (3/19) of those with myopericarditis and in 32% (7/22) in those with fever of unknown origin. The 63 Coxsackie B virus IgM negative patient’s serum samples were tested by ELISA for presence of adenovirus IgM antibodies. Such were found in 4 patients with pericarditis and in 2 patients with fever of unknown origin. Every IgM negative sample (n=189) for Coxsackie B and adenovirus was further tested by ELISA for parvovirus B19 IgM/IgG antibodies. B19-IgM antibodies were detected in 14 patients (7.4%). The percentages for B19-IgM antibodies was 8% (7/90), 5% (3/63) and 31% (4/13) in the patients affected with myocarditis, pericarditis, and fever of unknown origin, respectively. Protective B19-IgG antibodies were found in 108 (57%) of the samples. A B19-PCR signal was detected in all the patients who were B19-IgM positive, and in only 1 patient with positive B19-IgG result, the latter presenting with dilated cardiomyopathy.Conclusion:The present study shows the involvement of Coxsackie B, parvovirus B19 and adenoviruses in the development of inflammatory diseases of the heart (myocarditis and pericarditis). It is the first ever study in the country that simultaneously analyzes the prevalence of the three major human cardiotropic viruses.
Finite Population Mean Estimation through a Two-Parameter Ratio Estimator Using Auxiliary Information in Presence of Non-Response
Authors: Pal S. K. , Singh H. P. 
Published: January 2017

Abstract
In surveys covering human populations it is observed that information in most cases are not obtained at the first attempt even after some callbacks. Such problems come under the category of non-response. Surveys suffer with non-response in various ways. It depends on the nature of required information, either surveys is concerned with general or sensitive issues of a society. Hansen and Hurwitz (1946) have considered the problem of non-response while estimating the population mean by taking a subsample from the non-respondent group with the help of extra efforts and an estimator was suggested by combining the information available from the response and nonresponse groups. We also mention that in survey sampling auxiliary information is commonly used to improve the performance of an estimator of a quantity of interest. For estimating the population mean using auxiliary information in presence of non-response has been discussed by various authors. In this paper, we have developed estimators for estimating the population mean of the variable under interest when there is non-response error in the study as well as in the auxiliary variable. We have studied properties of the suggested estimators under large sample approximation. Comparison of the suggested estimators with usual unbiased estimator reported by Hansen and Hurwitz (1946) and the ratio estimator due to Rao (1986) have been made. The results obtained are illustrated with aid of an empirical study.
Changes in water quality of a small urban river triggered by deep drainage of a construction site
Authors: Bartnik Adam , Moniewski Piotr 
Published: January 2017

AbstractThe paper presents the results of the monitoring of the selected physicochemical properties of the Jasień River waters (in Łódź, the third biggest city of Poland) and their changes under the influence of drainage of a railway station Łódź Fabryczna construction site. Even 25 years ago the Jasień River was a receiver for the sewage from the Łódź textile factories. The drainage of the excavations and disposal of the water into the Jasień River was started on January 2014 and changed stable hydrological, physical and chemical regime of the river once again. In a consequence, average monthly flows exceeded the Jasień River flow in its upper section by six times, and at the beginning by even ten times. Chloride concentration was systematically growing over the study period. This growth and higher water pH were probably associated with increasing level of contaminants in the discharged water and its gradually decreasing uptake. Average annual water temperature increased and a decrease in its amplitude was observed. The annual conductivity and pH patterns became more uniform and the changes in pH followed a clear trend of monthly changes. Water turbidity increased by two times and during summer floods this parameter was often even a few times higher than before the drainage commenced. Chlorides improved water conductance and sodium and potassium increased basicity.
Features of application of the Penman–Monteith method for conditions of a drip irrigation of the steppe of Ukraine (on example of grain corn)
Authors: Romashchenko Myhailo , Shatkowski Andrzej , Zhuravlev Olexandr 
Published: January 2017

AbstractIn the article presented the features of application and adaptation of the calculation method for determination of evapotranspiration Penman–Monteith. With the purpose of effective use of this method in the practice of a drip irrigation in the steppe zone of Ukraine, on the base of the field’s experiments results were conducted correlation ofKcwith a taking into account deviations from standard conditions (on the example of grain corn).
Dynamics of the daily course of water temperature in Polish lakes
Authors: Skowron Rajmund , Piasecki Adam 
Published: January 2017

AbstractThe study focuses on short-term changes in surface water temperature in Polish lakes, and is based upon the experimental measurements of water temperature conducted every 60 minutes during the years 1971–2015. 19 lakes were selected on the grounds of their morphometric properties. The examinations were carried out in the system of expeditionary measurements (up to 8 days) and stationary measurements (over 2 months), and included temperature of surface water and its vertical distribution. The analysis of the results showed that temperature differences of water (daily amplitudes) were observed in both time and spatial distribution. The biggest differences in water temperature occurred during spring warming, and often reached 4–5°C, while rarely exceed 2°C in the remaining periods of the yearly cycle. The mean day value occurs twice; in the morning between 8:00 (7:00 GMT) and 11:00 (10:00 GMT), and in the evening at 20:00 (19:00 GMT) and 22:00 (21:00 GMT). Daily changes in the vertical distribution of water temperature are clearly visible down to the depth of 2.5–3.5 m, whereas are just perceptible to the depth of 5.5–7.0 m.
Condiciones relacionadas con el desarrollo de septos en la cavidad abdominal de pacientes pediátricos en diálisis peritoneal
Authors: Patiño-García G , Sepúlveda-Hernández M T , Martínez-Sagredo E J , Barrera de León J C 
Published: January 2017

INTRODUCCIÓN: en nuestro hospital la diálisis peritoneal es el método de sustitución renal de primera instancia. Los septos en la cavidad abdominal en niños con insuficiencia renal crónica son complicaciones por repetidos cuadros de peritonitis.OBJETIVO: determinar las condiciones relacionadas con el desarrollo de septos en la cavidad abdominal en pacientes pediátricos con diálisis peritoneal.MATERIALES Y MÉTODOS: estudio observacional retrospectivo, de marzo del 2012 a octubre del 2014, incluyendo pacientes pediátricos con enfermedad renal crónica con diálisis peritoneal. Los septos fueron diagnosticados por medio de ultrasonido abdominal. Estadística inferencial con exacta de Fisher y U de Mann Whitney, asociación de riesgo con razón de momios (OR). Se incluyeron 60 pacientes en dos grupos: con septos (n=20) y sin septos (n=40): sexo masculino n=11 (55%) y n=25 (62%); edad en años (mediana) 8 (0.5-15) y 9 (0.5-16),respectivamente (p = 0.756); duración de diálisis (mediana) 12 (4 60) y 16 (2-81) meses, también respectivamente (p = 0.653). RESULTADOS: no se encontró la causa de la insuficiencia renal en 13 (65%) de los pacientes del grupo con septos y en 25 (62%) del grupo sin septos; factores relacionados: solución glucosada hiperosmolar n=5 (25%) y n=11 (28%) (p = 0.917); cirugía abdominal posterior a Tenkoff n=3 (15%) y n=7 (18%); cuadros de peritonitis n=20 (100%) y n=29 (72%) (p = 0.025); necesidad de tratamiento sistémico n=19 (95%) y n=22 (55%) (p = 0.004), todos los datos para los grupos con y sin septos, respectivamente. CONCLUSIONES: dos o más eventos de peritonitis y necesidad de tratamiento sistémico son factores relacionados con el desarrollo de septos abdominales en niños con insuficiencia renal crónica en diálisis peritoneal.
Estudio químico de la fracción de acetato de etilo del hongo Ganoderma lucidum cultivado en desechos agroindustriales
Authors: Salgado Ordosgoitia Rodrigo Daniel , Arias Martínez Johanna Milena , Acosta Chavez Amparo Del Cristo , Rodriguez - Manrique Jhonatan Andres , Pérez Pérez Mario Frank 
Published: January 2017

<p>Estudios en hongos han revelado que poseen un alto valor nutricional, comprobada acción farmacológica de los metabolitos secundarios producidos en sus cuerpos fructíferos, siendo muchas las especies estudiadas, destacando entre estas el hongo macromiceto <em>Ganoderma Lucidum</em>, del cual se han aislado compuestos tipo lanostenoides y terpenoides, de importancia química y biológica, mostrando efectividad en la disminución de la presión sanguínea, propiedades antinflamatorias, antivirales, hipoglicémicas e inmunoprotectoras. Por otro lado, el cultivo de hongos promueve la solución a problemas de tipo ambiental, ya que puede hacerse en desechos agroindustriales. El objetivo fue estudiar la composición química del hongo <em>Ganoderma Lucidum, </em>cultivado en desechos agroindustriales y determinar diferencias entre los metabolitos obtenidos, con respecto a los de la especie del hongo en su estado silvestre. Para ello, se cultivó <em>Ganoderma Lucidum</em>, en desechos agroindustriales y se estudió químicamente la fracción de acetato de etilo (AcOEt), mediante cromatografía de columna (CC), cromatografía de capa fina (CCF), cromatografía en capa gruesa (CCP). Además de técnicas de análisis de estructuras CG-EM, RMN-<sup>1</sup>H, IR. Los resultados indicaron que se obtuvieron 674 fracciones, agrupadas como A-L por comportamiento cromatográfico similar, de estas se estudiaron las fracciones B, F e I, las cuales se sometieron a análisis espectroscópicos para elucidar las estructuras presentes, obteniéndose un total de siete compuestos presentes en ambas especies. De forma general, se puede concluir que al comparar el hongo cultivado con la especie silvestre, se establece que presentan una composición de metabolitos secundarios similar, donde el compuesto mayoritario fue el Ganoderiol B. © 2016. Acad. Colomb. Cienc. Ex. Fis. Nat.</p>
Análise semiolinguística do gênero editorial
Authors: Freitas Ernani Cesar de , Fumagalli Rita de Cássia Dias Verdi 
Published: January 2017

RESUMO:
Este estudo de caráter descritivo-qualitativo reflete sobre o discurso de um texto do jornal Zero Hora (ZH) caracterizado como editorial jornalístico. O marco teórico e metodológico de análise fundamenta-se na perspectiva semiolinguística de Patrick Charaudeau (2009, 2014, 2015), com o objetivo de descrever e analisar os procedimentos linguísticos pelos quais o jornalista imprime suas marcas no enunciado. Constatamos, através das pistas situacionais encontradas no gênero de informação midiática em análise, que as marcas do sujeito comunicante (EUc), a ideologia e a visão de mundo são inerentes ao texto e ao discurso, essas marcas são estratégias utilizadas pelo sujeito enunciador (EUe) que contribuem para persuadir o leitor e convencê-lo da veracidade do que diz.

PALAVRAS-CHAVE: Análise Semiolinguística; Gênero Editorial; Discurso Jornalístico; Zero Hora.
A concepção de aula como acontecimento e as práticas de multiletramento: um discurso pedagógico polêmico
Authors: Rezende de Oliveira Barboza Sandra Noeli , Teno Neide Araujo Castilho , Freitas Silvane Aparecida 
Published: January 2017

RESUMO:
O objetivo deste artigo é realizar um estudo teórico acerca da concepção de aula como acontecimento e a relação com a Pedagogia dos Multiletramentos, propondo uma reflexão acerca do discurso pedagógico. Dessa relação emerge um discurso polêmico, envolvendo professores e alunos como interlocutores, produtores e coprodutores de seus discursos, dentro e fora das salas de aula. Como metodologia de pesquisa, recorremos à pesquisa explanatória de cunho bibliográfico com teóricos como: Bakhtin (1996), Geraldi (2015), Rojo (2012), Orlandi (1996) e outros. Nessa perspectiva a reflexão sobre a aula torna-se uma possibilidade de discussão das novas práticas pedagógicas, de Língua Portuguesa no Ensino Médio.

PALAVRAS-CHAVE: discurso pedagógico polêmico; acontecimento; multiletramentos;
VIABILITAS BENIH PURWOCENG (Pimpinella pruatjan) PADA BERBAGAI PERLAKUAN STIMULASI PERKECAMBAHAN
Authors: Rusmin Devi , Darwati Ireng , Suwarno Faiza C , Ilyas Satriyas 
Published: January 2017

<p class="IsiabstrakIndonesia">Permasalahan dalam perbanyakan tanaman purwoceng adalah viabilitas benih yang sangat rendah (≤ 20%). Untuk mengatasi permasalahan tersebut dilakukan penelitian yang bertujuan mendapatkan metode stimulasi per-kecambahan yang dapat meningkatkan viabilitas dan vigor benih purwoceng. Penelitian dilaksanakan di Laboratorium Fisiologi Tanaman, Balai Penelitian Tanaman Rempah dan Obat, Bogor, sejak Juli sampai November 2009. Rancangan yang digunakan adalah rancangan acak lengkap (RAL), satu faktor dengan empat ulangan. Perlakuan yang diuji adalah stimulasi perkecambahan yang terdiri atas 13 macam yaitu: T1=kontrol, (2) T2=stratifikasi dengan suhu 10<sup>0</sup>C (2 minggu), (3) T3=<em>stratifikasi</em> dengan suhu 5-10<sup>0</sup>C (4 minggu), (4) T4=penyimpanan kering pada suhu ruang (2 minggu), (5) T5=penyimpanan kering pada suhu ruang (4 minggu), (6) T6=pencucian dengan air mengalir (24 jam), (7) T7=pencucian dengan air mengalir (48 jam), (8) T8=imbibisi dengan GA<sub>3</sub> 100 ppm (24 jam), (9) T9=imbibisi dengan GA<sub>3</sub> 200 ppm (24 jam), (10) T10=imbibisi dengan GA<sub>3</sub> 400 ppm (24 jam), (11) T11=imbibisi dengan KNO<sub>3</sub> 0,2% (24 jam), (12) T12=pemanasan pada suhu 50<sup>0</sup>C (24 jam), dan (13) T13=pemanasan pada suhu 50<sup>0</sup>C (48 jam). Hasil penelitian menunjukkan stimulasi perkecambahan dengan pemanasan suhu 50°C selama 48 jam merupakan perlakuan terbaik dalam meningkatkan viabilitas dan vigor benih purwoceng dengan daya berkecambah 51,5% dan kecepatan tumbuh benih 1,74% etmal<sup>-1</sup> dari semua perlakuan yang diuji. Hasil tersebut mengindikasikan masih perlu penelitian peningkatan viabilitas benih purwoceng untuk mendukung pengembangan tanaman purwoceng di Indonesia. Beberapa langkah yang dapat dilakukan untuk meningkatkan viabilitas benih purwoceng selanjutnya adalah: (1) menggabungkan metode pemanasan dengan pemberian GA dan (2) menggabungkan metode pemanasan dengan penyimpanan kering pada 18-20°C.</p>
Improving Quantitative Analysis of Frac-Hits and Refracs in Unconventional Plays Using RTA
Authors: Yadav Himanshu , Motealleh Siyavash 
Published: January 2017

Abstract
One of the most common field development plans in shale plays involves drilling lease/acreage retention wells in different areas followed by coming back and drilling infill wells. In majority of these shale plays, job sizes for hydraulic fracturing treatment are getting bigger over time in order to achieve more volume as well as value. However, due to depletion, there exists a pressure sink around the older existing producers and that significantly increases the possibility of older well getting "frac-hit" by new stimulation, and receiving large volume of frac fluid. Frac-hits can easily be seen using pressure gauges in older wells, and other surveillance techniques including chemical/RA tracers, microseismic, etc. One of the other "interference" effects that change the behaviour of parent well is refracturing. Operators are identifying candidates that were either poorly stimulated initially or have lost productivity over their life, and are refracturing those wells. In both frac-hits and refracs, there is a change in well productivity; and understanding and quantifying this loss/gain in production still remains challenging.
In this paper, both analytical and numerical modeling techniques were used to explore the existing workflows and techniques in the literature to study frac-hits and refracs. Rate transient analysis (RTA) was used to complement the numerical reservoir simulation models. Flow regimes were identified on superposition time plots using RTA (linear flow regime, boundary-dominated regime), and numerous sensitivities were run on the frac-hit/refrac timing, reservoir matrix permeability. Frac-hit examples from Eagle Ford shale were examined.
This paper studies the existing RTA techniques to model frac-hits/refracs and compares them with the new technique proposed herein. It was observed that RTA models needed to be re-initialized to model post frac-hit or refrac behaviour to correctly quantify the changes in SRV. It is shown that although the existing techniques work reasonably well at low matrix permeability, the error margin goes up as the permeability increases. In Eagle Ford, the permeability is high enough to warrant using this new analysis method.
Existing analyses methods primarily use diagnostic plots (superposition time) and are only applicable to frac-hits or refracs prior to boundary dominated flow (BDF) regime. This proposed method is valid over different flow regimes & larger permeability ranges. The analysis method recommended in this study allows the operators to better analyse the efficiency and benefits of their refracs, as well as detrimental impact of frac-hits from infilling and downspacing the wells.
Long Term Conductivity vs. Point Specific Conductivity
Authors: Renkes I. , Anschutz D. , Sutter K. , Rickards A. 
Published: January 2017

Abstract
Long term conductivity of proppants, currently defined by API RP 19D, has been used since the early 1970's as the standard for evaluating the conductivity and permeability of proppants for use in hydraulic fracturing. Proppants are typically tested across their useful range in 2,000-psi (137.89-bar) increments (i.e. 2-4-6-8K-psi…) and held 50 hours at each stress level, ramp rates between each stress and the test temperatures are also defined by API RP 19D. Frac sand is tested at 150°F (65.5°C) and ceramic proppants at 250°F (121.11°C). Proppant suppliers use this, among other testing parameters, to develop data to market their products to the industry. As with any standard, the test has its limitations. The test is expensive, time consuming and in many cases does not match the application.
Point specific 50 hour (PS50) conductivity tests follow the procedures outlined in API RP 19D but use a point specific stress and point specific temperature, modeling a specific application. Although not yet sanctioned by the API, the test can generate meaningful data in less time, for a specific purpose and save money. Point specific testing has maximized Research & Development budgets and increased the time to market for new products. Operators have benefited by tailoring proppants for their specific well conditions.
In this work we plan to compare point specific test data to API RP 19D data over a range of stress and time as the industry pushes the envelope on the applicable stress for proppants. Aven, Tang and Weaver brought out that "it is normal to observe a continuous decline in conductivity, although less than 5% on a daily basis, if the measurement is carried longer than two days. It is rare that the system actually achieves equilibrium conductivity during that time, but the rate of change of conductivity does slow down1."
Could the point specific test be extended to achieve equilibrium and still be comparable to existing data from the standardized test? Multiple tests were conducted to compare these two methods of conductivity tests at normal duration, a point specific 50 hour (PS50) conductivity test and the API RP 19D conductivity test which the test spends 50 hours at each 2,000 psi (137.89-bar) increment. Results presented in this paper will help answer these questions and aid engineers make more informed decisions faster and with a lower economic cost.