bluuebunny/crossref_metadata_2025 huggingface dataset:
Length control of metal particles containing trajectories generated by metal sphere movement and elucidation of the relationship between metal sphere speed and metal addiction
Authors: Nishioka Nobuyasu , Hidai Hirofumi , Matsusaka Souta , Chiba Akira , Morita Noboru
Published: February 2020

High-intensity laser-irradiated metal spheres in glass move toward a light source while leaving the doping metal in their trajectories. A method for controlling the trajectory length, which can be used to produce new optical devices in glass, has not been proposed yet. In-situ observations clarified the relationship, wherein the trajectory length increased with the increasing laser power and irradiation duration; the maximum and minimum being 2.0 and 0.1 mm, respectively. Microscopic observations, elemental analysis, and counting the number of metal particles revealed that the maximum speed metal sphere generated the most metal-containing area with the highest number of metal particles.
Einsatz von Chatbots am digitalen Büroarbeitsplatz – Eine praxisorientierte Betrachtung von Einsatzbereichen, Wirkungen und Handlungsempfehlungen
Authors: Meyer von Wolff Raphael , Hobert Sebastian , Schumann Matthias
Published: February 2020

Chatbots werden heutzutage vermehrt im Unternehmen eingesetzt. Vor allem in Supportbereichen finden sich diese auf künstlicher Intelligenz und Sprachverarbeitung basierenden Technologien als Alternative für bisherige First-Level Kanäle. Dabei helfen Chatbots bei der Beantwortung von Kunden- und Mitarbeiterfragen und führen bereits erste kleine Aufgaben durch. Der Einsatz dieser Technologie am Büroarbeitsplatz zur Unterstützung der einzelnen Mitarbeiter ist jedoch noch kaum untersucht. Basierend auf einer empirischen Interviewstudie mit 29 Praxisvertretern aus 27 Unternehmen verschiedener Branchen soll dieses der folgende Beitrag untersuchen.

Die Ergebnisse zeigen, dass Chatbots sowohl abteilungsintern als auch abteilungsübergreifend für Aufgaben der Informationsbereitstellung sowie Prozessausführung eingesetzt werden können. Die Unternehmen beabsichtigen dabei verschiedene Wirkungen, um schlussendlich die Qualität am Arbeitsplatz zu steigern, Produktivität und Effizienz zu erhöhen, Kosten einzusparen oder das Image zu verbessern. Zusätzlich konnten sowohl technische als auch organisatorische Maßnahmen abgeleitet werden, die für einen erfolgreichen Chatboteinsatz berücksichtigt werden sollten. Der Beitrag liefert somit einen Leitfaden für zukünftige oder aktuelle Chatbotprojekte, sowohl für die Wissenschaft als auch für die Praxis.
Developing and publishing interdisciplinary research: Creating dialogue, taking risks
Authors: Lugosi Peter
Published: February 2020

This article discusses the practicalities of developing interdisciplinary research, identifying associated risks, challenges and opportunities. It reflects on the role of common concepts and contexts for creating intellectual contact zones between disciplinary specialists and colleagues working in applied areas of hospitality and tourism. The article goes on to identify and evaluate different knowledge creation and publication strategies for interdisciplinary research, distinguishing between four types: provocative importation, conservative refinement, provocative exportation and radical pathmaking.
Estampa del Madrid antiguo: el café suizo (1845-1919)
Authors: Vázquez Astorga Mónica
Published: February 2020

En este texto nos centramos en el café Suizo de Madrid, que fue inaugurado en 1845. Los críticos de la época acogieron con grandes elogios su apertura, insistiendo especialmente en el lujo de su instalación. Fue fundado por la sociedad Francisco Matossi, Bernardo Fanconi y compañía ˗que bajo el mismo nombre de Suizos tenía otros en varias ciudades˗ en una de las principales vías, en la calle de Alcalá, esquina con la Ancha de Peligros. Fue uno de los cafés más concurridos y acogió célebres tertulias. Con su desaparición, en 1919, se llevó consigo muchas historias de la vida madrileña.
Uśpiony temat. O (nie)obecności problemu Marca 1968 roku w kinie dokumentalnym okresu PRL
Authors: Pietrzak Maciej
Published: February 2020

Pietrzak Maciej, Uśpiony temat. O (nie)obecności problemu Marca 1968 roku w kinie dokumentalnym okresu PRL [Dormant topic. About the absence of the events of March 1968 in Polish documentary films before 1989]. „Images” vol. XXVI, no 35. Poznań 2019. Adam MickiewiczUniversity Press. Pp. 63–75. ISSN 1731-450X. DOI 10.14746/i.2019.35.03.

The vast majority of documentary films relevant to the events of March ‘68 and its consequences were created after 1989, when the abolition of censorship and the opening of previously hidden archives allowed Polish filmmakers to explore previously prohibited topics. The article focuses on the earlier period, and its main objective is to find echos of this political crisis in documentary films created before the collapse of the communist regime in Poland.
Bunt i nostalgia. Filmy dokumentalne o festiwalu w Jarocinie
Authors: Bitka Stanisław
Published: February 2020

The aim of the article is to present and attempt to classify documentary films about the Jarocin music festival. The films are conventionally divided into those shot during the 1980s editions and those created in our century, which describe them festival in retrospect. By analyzing selected works, the author draws attention to whether and how the approach to the subject and the form of the film change over the years.
An Introduction to Research into Chinese Hunting Language
Authors: Grzybek Joanna
Published: February 2020

The Chinese language of hunters which is unknown in Poland deserves some attention of researchers and translators dealing with Chinese. Chinese hunters and hunting amateurs are going hunting abroad more and more frequently visiting South Africa, Canada or Australia, and sometimes also Poland. The author of the paper would like to inspire Polish researchers to investigate the Chinese language of hunters and turn attention to the fact that it is one of the oldest community languages. First, some information concerning hunting in China is presented, including a brief historical outline and hunting tourism. Next, legal regulations concerning hunting and environment conservation are discussed. Finally, the author focuses on falconry and touches upon falconry- and animal-related terminology
Why Is New Materialism Not the Answer? Approaching Hyper-Matter, Reinventing the Sense of Critique Beyond ‘Theory’
Authors: Krzykawski Michał
Published: February 2020

The article offers a new model of materialist philosophical critique (general technocritique or digital critique) as a critical response to new materialism(s). Drawing on the reinterpretation of the legacy of European philosophies and works by Bernard Stiegler, the article strives to elaborate authentically new theoretical account of matter, notably in relation to the techno-logical mode of its organisation. The critique of new materialism(s) is positioned within the unprecedented crisis of the theoretical model of knowledge. What it is possible to discover by the end of the second decade of the 21st century is that humanities scholars have not managed to confront the central issue for their viable future: the whole theoretical and methodological model, which has so far provided fuel for the contemporary humanities and shaped our social class, postcolonial, gender, queer and other sensibilities, is plunging into a deep epistemological crisis, for having lost its efficient and final cause. In a nutshell, the modelof “doing theory,” is no longer valid, inasmuch as “theory” strangely misrecognized the revolutionary developments in cybernetics, which occurred in the 1950s and radically changed the very nature of knowledge. Therefore, a new epistēmē has to be formed in this new digital condition. However, the formation of this new epistēmē requires for us to radically transform what is referred to as “theory” or “critical theory” and to take into account the developments in the sciences and technology (not necessarily in the methodological framework offered by what is defined as STS) in order to lay the foundations under a new critique of political economy in the hyper-material era.
Materiality of Poetry: Words and Bodies/ Words and Pictures (Ewa Partum, Andrzej Tobis, Adam Kaczanowski)
Authors: Kałuża Anna
Published: February 2020

The article discusses the possibilities of the emergence of a neo-materialistic aesthetics of the poem. Each of the analyzed examples—Ewa Partum’s active poetry, Adam Kaczanowski’s toy-art and Andrzej Tobis’s photographic archive—reveals different aspects of this aesthetics. The case of Partum shows that the material concreteness of poetry—today also associated with virtuality— requires other ways of perceiving / commenting / documenting the “poems” happening between the media. Active poetry consists in drawing the text (which eventually turns out to be a jigsaw made of letters) out of the formula of the finished object and making the medium of writing/language the material from which the object of artistic attention is “made”. I call Tobis’s project neo-materialistic, since it shows how we move from the human hybrid level we move to normalization and stabilization (and vice versa). Tobis seems to reach the moment when this normalization is actually happening and, at the same time, he shows levels of transformations, mutations and deviations. Kaczanowski “invents” for his poetry a medium different from the traditional record and the traditional form of the book. This principle of “invention” turns out to be very important, because it decides whether some materializations are poetic objects or not, without specifying any initial aesthetic, political and ideological criteria. In the most general terms this new-materialist aesthetics has been linked here with the transmedia horizon of art and the transformations of materialistic thinking made under the influence of the non-anthropocentric imagination.
Severidad de dehiscencias y fenestraciones en pacientes orto quirúrgicos con maloclusión Clase III evaluados con tomografía computarizada cone beam
Authors: Vásquez Cabrejos Carol Del Pilar , Romero Tapia Percy , Rivas Romero Gianmarco , Sedano Balbin Gabriela
Published: February 2020

Objetivo. Determinar la frecuencia y severidad de las dehiscencias y fenestraciones vestibulares en las piezas anteriores de pacientes orto quirúrgicos con maloclusión de Angle Clase III evaluados con tomografía computarizada de haz cónico pre quirúrgica o tomografía computarizada cone beam. Métodos. Se evaluaron 30 tomografías de pacientes con maloclusión Clase III esquelética con tratamiento de ortodoncia pre quirúrgica. La muestra fue no probabilística, de casos consecutivos, atendidos en la Facultad de Odontología de la Universidad Nacional Mayor de San Marcos y en el Servicio de Odontología del Hospital Nacional Guillermo Almenara Irigoyen durante el año 2018. Se consideró dehiscencia a la migración apical de la cresta alveolar a partir de 2 mm desde la unión cemento–esmalte y fenestración, a la porción radicular expuesta sin afectar el margen óseo a partir de 0,5 mm. Resultados. Del total de tomografías, 43,3% fueron de mujeres y 56,7% fueron de varones. Se observaron dehiscencias en todas las tomografías, con mayor frecuencia en la mandíbula (91,7%) y caninos inferiores (100%). Las fenestraciones se observaron en el 66,7%, con mayor frecuencia en el maxilar (28,3%) y caninos superiores (31,7%). El grado severo fue más frecuente en dehiscencias (65,8%) y fenestraciones (13,9%), afectando los caninos inferiores (100%) y superiores (26,7%), respectivamente en cada defecto. Conclusiones. Las dehiscencias estuvieron presentes en todas las tomografías, afectando a los caninos inferiores en el grado severo y las fenestraciones estuvieron presentes en la mayoría de las tomografías, afectando con mayor frecuencia a los caninos superiores en el grado severo.
Estereotipos de género y violencia encubierta de pareja en hombres y mujeres de 18 a 24 años
Authors: Quintana Peña Alberto , Grajeda Montalvo Alex , Malaver Soto Carmela , Medina Curi Nicolás , Montgomery Urday William , Ruiz Sánchez Gabriela , Ojeda Mercado Giancarlo
Published: February 2020

Esta investigación tuvo como objetivos determinar las características de los estereotipos de género en la muestra seleccionada según sexo. Identificar creencias emergentes respecto al género, relaciones de pareja y violencia; y finalmente establecer si la violencia encubierta de pareja, en hombres y mujeres presenta diferencias significantes. Para ello se usó la técnica asociativa de las redes semánticas naturales, adaptada para el presente trabajo por el grupo de estudio con la finalidad de estimar el grado en que cada sujeto comparte el estereotipo del grupo en relación a determinadas conceptualizaciones acerca de la mujer, relaciones de pareja y violencia contra la mujer. Por otra parte se aplicó la Escala de Violencia Encubierta, para medir las pautas del comportamiento de pareja. Los resultados obtenidos muestran que ambos sexos poseen características muy particulares en los estereotipos estudiados, describiéndose la existencia de creencias distintas a las tradicionales en relación al género, las relaciones de pareja y la violencia. Finalmente no se hallaron diferencias en la violencia encubierta según sexo.
A Change in the Supply of Professionals in the Health Care Sector and Assessment of the Demand for Physicians and Opportunities for their Integration into the Labour Market
Authors: Pocius Arūnas
Published: February 2020

The article paper analyses the supply of health care professionals in health care sector in Lithuania in terms of demographic change. On the basis of data from different studies and of the analysis carried out in this work by the author, particular attention is given to the problem of the assessment of the demand for health care professionals (physicians) in health care sector in Lithuania. When analysing the integration of health care professionals into the labour market, in addition to sociological surveys, the data of Lithuanian Statistics Lithuania Department on labour force (employment) was were used. This paper investigates explores the possibility of using different data sources for the analysis of the demand for health care professionals (physicians), as well as analyses their situation in the labour market on the basis of the scientific literature review.
Econometric Modelling of Lithuanian Labour Market
Authors: Tendziagolskytė Dalia , Rudzkis Rimantas
Published: February 2020

Lithuanian labour market indicators, such as the total number of employees, the number of employees in the private and public sectors, the number of the unemployed, labour force, employment and unemployment rates, the relative number of employees, average monthly gross income are analysed in the paper. The experience of foreign countries and Lithuania in creating labour market models and econometric methodology has been examined. As a result, a new model of the Lithuanian labour market is produced, comprising ﬁve regressive equations, which are part of the recursive SVAR model, and four identities, which are part of balance equations. According to the logic of economic and other research, relevant connections in the economy have been specified, unknown parameters of equations have been estimated. Finally, forecasts of endogenous indicators for 2014 have been provided, and results have been compared with the projections of the main labour market indicators for 2014−2017, published by the Ministry of Finance. Calculations have been made using a statistical package Gretl.
ARMA Models for Mortality Forecast
Authors: Šiškina Natalja , Šiaulys Jonas
Published: February 2020

In the last several decades, many countries have been paying a lot of attention to mortality forecastingbecause of high longevity risk. The purpose of this paper is to analyze mortality characteristics of Baltic countries andmake predictions using ARMA models. Research shoved that mortality rate distribution is almost the same in Lithuania, Latvia and Estonia and all of them represent longevity trends. It means that men and women, children and adults have thesame mortality structure in all Baltic countries and live longer than before.
Ovatrine, a compound from plant extracts, used for female infertility treatment and increase the number of ovarian follicles
Authors: Hussein Mahmoud Elnahas
Published: February 2020

Background: Recently natural products extracted from medical plants are very important in the field of alternative medicine. Glycosides, flavonoids and polyphenols are components of natural molecules have several health benefits such as anti-inflammatory, anti-oxidants, and have many ameliorative roles against male and female reproductive system intractable disorders. Objective of this study was to the compound of the plant extracts blend which is rich with glycosides, flavonoids and polyphenols was named as Ovatrine. The safety as well as the efficacy of some medical plants extracts on the fertility of the female mice was investigated using Ovatrine.Methods: Firstly, the safety of Ovatrine was evaluated using some mice and the levels of the follicle stimulating hormone in the serum of the treated animals with Ovatrine was evaluated using biochemical tests. Also, the effects of the Ovatrine on the histological parameters of the treated ovary and uterus were evaluated using histological analysis.Results: The animals treated with Ovatrine were healthy and did not show any signs of mortality, toxicities and there were no blood contents changes. Additionally, follicle stimulating hormone level in the serum increased after administration with Ovatrine twice a day for 30 days as compared with the non-treated animals. Furthermore, the histological structures of the ovary and uterus improved in the mice treated with Ovatrine compared with that in the non-treated mice.Conclusions: In general glycosides, flavonoids and polyphenols, which were found in the Ovatrine in a higher concentration, have important health benefits such as antioxidant, anti-inflammatory and improve the fertility in the female mice. In the future this study will be very important for drug development which composed mainly from safe natural products and used for infertility and intractable diseases treatment.
Endometrial cancer with implantation metastasis to vagina: a case report
Authors: Sapiee Muhammad Eimaduddin , Wan Abas Wan Rosmidah , Ramli Roziana , Mohd Yusof Muhd Afif , Nasaruddin Ahmad Fazlin
Published: February 2020

Authors present a case of vaginal implantation metastasis following a diagnosis of endometrial cancer. A 58-year-old lady presented with postmenopausal bleeding and was later diagnosed to have endometrial cancer. She underwent an extra-fascial hysterectomy and bilateral salpingo-oophrorectomy with pelvic lymphadenectomy for Stage 3A endometrioid adenocarcinoma of the endometrium. The lymph nodes and cervix were free from the disease and no lymphovascular invasion was seen on the pathological specimen. She defaulted adjuvant radiotherapy and was lost to follow up. Six months later she had a tumour recurrence at the vaginal introitus just below the urethral orifice and awal from the vaginal vault with similar histopathological findings as previous cancer. This case highlights the rare occurrence of implantation metastasis of endometrial cancer.
Hysteroscopic treatment of cervical pregnancy: case report
Authors: Valdez Aarón Jiménez , Flores Sara Elia Hernadez , Vilchis Jorge Arturo Barbabosa , Calderon Claudia Meixueiro
Published: February 2020

Of ectopic pregnancies, cervical implantation pregnancy is an exceptional entity, corresponding to less than 1% of ectopic pregnancies. With an incidence calculated at 1: 2500 to 1: 12,000 pregnancies. The risk factors for cervical pregnancy are the same as for other ectopic pregnancies. This entity, a difference from tubaric pregnancy where bleeding is within the peritoneal cavity, the main risk is incoercible vaginal bleeding, which usually ends in a hysterectomy, which limits the reproductive future of patients. There are currently no established criteria for candidates for medical versus surgical treatment. This case reports a case of cervical ectopic pregnancy, treated with Methotrexate, and culminating with hysteroscopy resection.
Relation between transcranial doppler findings, neuroimaging and functional state in the first days of acute cerebrovascular accidents- hemorrhagic and ischemic in patients admitted to the Ardabil city hospital during 2015-2016
Authors: Anari Hasan , Ardalani Ghasem Fattahzadeh , Ghoreishi Esmaeil , Reihany Mortaza Delkhosh , Gholizadeh Amir
Published: February 2020

Background: Cerebrovascular accident (CVA) is the third leading cause of death in the United States. Considering the diagnostic and clinical value of sonography of extra cranial vessels of the brain, identifying findings obtained from patients suspected of having CVA and Transient Ischemic Attack (TIA) and their prevalence is of great importance. The aim of this study was to investigate the relation between TCD finding, neuroimaging and functional state of ischemic and hemorrhagic CVA patients.Methods: This was a cross-sectional study that has been done on 100 stroke patients admitted to Ardabil city hospital from March 2015 to March 2016. Patients underwent to CT-scan, doppler sonography, and TCD. The obtained data were analyzed by statistical methods in SPSS version 21.Results: The mean age of the patients was 66.3±11 years and 53% were women. High blood pressure, history of heart disease, smoking, and diabetes were the major risk factors in the present study. Fifty eight percent of the patients had moderate to severe disability in their functional status. Atheroma plaques, intima-media thickening, and the change of speed in the external carotid artery were most frequent in doppler sonography investigations. There was no significant correlation between the obtained results from TCD and the functional status of the patients.Conclusions: Considering the non-significant correlation between TCD results and the functional state of the patients in this study, for exactly study of this topic, study the TCD of patients on several different days and after starting treatment is essential.
Employee recognition policies and programs for medical and non medical staff in a public and a private hospital in a metropolitan city of India: a comparative study
Authors: Tadia Vijay Kumar , Singh Harikant
Published: February 2020

Background: Employee recognition has been linked to such positive outcomes as job satisfaction, organizational and career commitment, cohesion and collaboration, and perceived organizational support. A lack of meaningful recognition has been linked to negative outcomes such as absenteeism and turnover, stress and burnout, and decreased quality of patient care.Methods: A comprehensive descriptive and comparative cross-sectional study on employee recognition policies and programs for medical and non-medical staff in a public and a private hospital in India was conducted from April 2012 to October 2012. A 200 bedded public hospital with the staff strength of 140 and a 110 bedded private hospital with total staff strength of 160 participated in the study.Results: There were no doctors or technicians who did not enjoy their job. There were small number of nurses who didn’t enjoy the job (8% and 10% in public and private hospital respectively). For housekeeping staff, there was much variability in the option for, “Somewhat Enjoy” from 14% to 45% in public and private hospital respectively. Majority of doctors (87.5% and 80%) in public and private hospital respectively, were unhappy with the workload of their job. Also, significant number of nurses (44% and 27.5%) and technicians (20% and 20%) in public and private hospital respectively, were unhappy with the workload of their job.Conclusions: It is well established that good salary structure, good promotion opportunities and good training is important for employee satisfaction, but employee recognition also plays an important role.
Prevalence of anaemia among females in reproductive age group attending a health center in the urban area of Kancheepuram district: a cross sectional study
Authors: Thoufiq A. Abdul Azeez , Johnpaul A. , Umadevi R.
Published: February 2020

Background: Anaemia, which is defined as a low oxygen carrying capacity of blood, is a major public health problem. It is a condition in which there is a decrease in the total number of red blood cells in the blood, either due to decreased production or increased destruction or both. Anaemia, one of the most prevailing nutritional disorders, has a worldwide prevalence of approximately 52%. The burden of anaemia is high especially among females of reproductive age group where India ranks the top. The study is aimed to establish the prevalence of anaemia among female patients of reproductive age group (15-49 years).Methods: A cross sectional study was conducted among 254 females of reproductive age group, attending Anakaputhur, an urban field practice area of Sree Balaji Medical College. Convenient sampling method was used. Data was collected by discussion using a pretested semi-structured questionnare and haemoglobin estimation was done by venous sampling method.Results: The mean age of the study participants were 34.6±12.4 years with 9.05% uneducated and 8.6% graduate females. 26% gave history of symptoms of anaemia and prevalence of anaemia was reported to be 42.12% with 24.4%, 12.2% and 5.5% of mild, moderate and severe anaemia, respectively.Conclusions: Prevention and its treatment in women is much essential at this point, hence programmes and policies should be implemented based on the needs of the community, and health education should be imparted with respect to measures that can prevent and help in early diagnosis of anaemia.
Utilization of antenatal services among mothers and its impact on birth weight: a community based cross-sectional study
Authors: Reddy P. Narmada , Das Sangeeta , Karmee Nivedita , Satapathy Durga Madhab , Bhoi Jugal Kishor
Published: February 2020

Background: Safe motherhood initiatives was a worldwide effort launched by WHO in 1987 with an aim to reduce the number of deaths of women associated with pregnancy and childbirth. Appropriate antenatal care (ANC) is one of the pillars of this initiative and an important component of reproductive and child health. The present study was conducted to assess the utilization of antenatal care services, its contributing factors and its impact on birth weight of new-born.Methods: A community based cross-sectional study was conducted for a period of 3 months at Ankuli, field practice area of urban health training centre, Department of Community Medicine. A total of 138 mothers (delivered within 2 years) were included by cluster sampling. Women who were sick and did not give consent were excluded from the study.  A pre-designed and pre-tested questionnaire was used for data collection and analysed in SPSS version 16. Chi-square test and bivariate logistic regression was applied at p value <0.05.Results: About 55.07% of mothers were in 25-34 years of age group, 47.82% had studied secondary education and 36.23% mothers belonged to lower middle-class socioeconomic status (SES). About 60.87% of mothers had availed antenatal services completely. Education of the participant and her husband, SES and family type were significant contributors of ANC service utilization. There was a significant association between complete ANC utilization and birth weight of the baby (p<0.05).Conclusions: The utilisation of the antenatal services was low among the mothers in our study which can be increased by proper IEC activities.
Estrutura Conceitual de Plataforma de eGov para o Ministério do Turismo (MTur)
Authors: Biz Alexandre Augusto , Pacheco Roberto Carlos dos Santos , Todesco José Leomar
Published: February 2020

As condições políticas e o ambiente de negócios em turismo são espelho da estrutura de governança pública e de governo aberto (eGov) no Brasil, identificados nos estudos de competitividade do turismo pelo WEF e pelo índice de desenvolvimento de eGov pela United Nations. Buscou-se nesta pesquisa apresentar uma estrutura conceitual de plataforma de eGov para o Ministério do Turismo. Pesquisa exploratória de abordagem qualitativa, conceitualmente estruturado em Kalbaska et al. (2016) com conjunto de relacionamentos entre atores via plataforma eGov, em Biz (2014) com elementos e os fatores associados à gestão do conhecimento no setor turístico, em Thomas et al. (2014) com visão dos múltiplos subsistemas associados a plataformas de informação e Pacheco et al. (2015) com a e-governança. Entre os resultados potenciais da aplicação da plataforma proposta estão o apoio intensivo de tecnologias na ampliação de valor agregado dos serviços e bens turísticos, na formação atual e futura de pessoas para atuar no setor, na formalização de MEI e ME, e na busca constante de inovação.
Vigilancia de las agresiones causadas por animales susceptibles a rabia, una lesión de causa externa evitable, Casanare-Colombia, 2012-2016
Authors: Azuero Vargas Yenny Angélica , Castañeda-Porras Oneida , Ramírez Jiménez Olga Lucía
Published: February 2020

La vigilancia, prevención y control de la rabia es una prioridad para la salud pública, especialmente, la rabia transmitida por perros (variante 1) y la rabia silvestre. El objetivo de esta investigación fue describir el comportamiento epidemiológico del evento entre 2012-2016 en el departamento de Casanare-Colombia. El estudio fue descriptivo, retrospectivo a partir de la notificación de casos al Sistema Nacional de Vigilancia en Salud PúblicaSivigila. Variables a estudio: a) características sociodemográficas, b) agresión/contacto, c) exposición, d) inmunización y e) tratamiento. Aplicación de estadística descriptiva y cálculo de indicadores de vigilancia. Datos analizados con el paquete estadístico Epi-Info 7.2.2.2TM. El 98.5% (6036/6131) de casos procedentes de Casanare, distribuidos en 2012 (1229; 20.4 %), 2013 (1180;19.5 %), 2014 (1227; 20.3 %); 2015 (1153;19.1 %), 2016 (1247; 20.7 %); del 72.5 % del área urbana; 55.4 % del sexo masculino; edad promedio 24.3(± 20.7) valor mínimo 0.01 y valor máximo 97 años; 40.7 % de 5-19 años; 37.5 % estudiantes, 13.3 % amas de casa, 5.4 % menores de edad, 19.4 % con registro de ocupación, de ellos, 29.8 % (349/1172) agricultores; 1.5 % hospitalizados; todos vivos. El 80.6 % (721/894) de exposición leve tuvieron tratamiento adecuado, 4.3 % (37/894) se aplicó suero antirrábico; 91.1 % (653/717) de exposición grave con tratamiento adecuado; 26.7 % (1611/6036) de los casos estuvieron expuestos al virus de la rabia. Incidencia por 100.000 habitantes de exposición rábica: 2012-2016 (344.8); tasa de hospitalización 11.5/100 000. Se evidencia el incumplimiento del indicador de tratamiento adecuado, es decir, en los casos clasificados como exposición leve, aplicar únicamente cinco dosis de vacuna antirrábica (esquema de vacunación completo); y, en exposición grave, aplicar el esquema de vacunación completo y suero antirrábico. Se recomienda continuar/mantener las actividades de vigilancia del evento y los esfuerzos para evitar la transmisión de la rabia humana
Desempeño de bancos forrajeros de Cratylia argentea (Desv.) Kuntze, en suelos degradados en el departamento de Casanare
Authors: Navas Panadero Alexander , Daza Cárdenas José Ignacio , Montaña Barrera Víctor
Published: February 2020

Las épocas de sequía o lluvias extremas afectan la eficiencia en los sistemas ganaderos, los cuales basan la producción de forrajes en el monocultivo de gramíneas, estas son más vulnerables a las condiciones climáticas extremas, lo que hace necesario buscar alternativas de plantas más resistentes a estas condiciones. Se determinó el desempeño de Cratylia argentea en bancos forrajeros, establecidos en suelos degradados con alto uso de agroquímicos, bajo condiciones de bosque húmedo tropical. El estudio se realizó durante un año y se estableció en la finca Matapantano, ubicada en Yopal, Casanare (Colombia), se determinó el efecto sobre las propiedades físico-químicas y macrofauna del suelo, producción de forraje verde y materia seca, relación hoja-tallo, calidad nutricional de la planta completa y fracciones (hoja-tallo). Se utilizó un diseño al azar y el software Infostat® para estadística descriptiva y análisis de varianza no paramétrica. Se presentaron incrementos en los contenidos de minerales, materia orgánica, carbono orgánico y macrofauna del suelo, se encontraron diferencias en producción de materia seca de las fracciones de la planta (p < 0.0001), en la producción de materia seca entre cortes (p < 0.0001) y en la relación hoja-tallo (p < 0.0001), el forraje presentó buena calidad nutricional, siendo las hojas la fracción de mejor calidad, C. argentea resistió los cambios drásticos en las condiciones climáticas. Se concluye que esta especie, presenta potencial para la recuperación de suelos degradados con intenso uso de agroquímicos, puesto que produce forraje de buena calidad para la suplementación animal en sistemas ganaderos, aun en épocas de sequía
Role of Tau Protein in Alzheimer Disease and its Inhibitors from Plants
Authors: Dr. Aitazaz Ahsan  , Dr. Humaira Zafar  , Misha Waheed
Published: February 2020

Alzheimer is a common neurodegenerative disease that affects 45 million people worldwide. Pathogenesis usually begins with formation of plaques and neurofibrillary tangles due to abnormal folding of amyloid beta and tau proteins. Tau proteins are important member of microtubule associated proteins and involved in constitution of microtubules network in neurons which play major role in progression of Alzheimer disease. Hyper phosphorylation and aggregation of Tau protein on chromosome 17 may be the sign of several neurodegenerative pathologies like Alzheimer disease (AD), Parkinsonism, fronto-temporal dementia and Pick disease. The complete cure of AD is not possible be with already marketed drugs. From this review article it is concluded that Tau protein is an important biomarker of Alzheimer disease. Usage of extracts from various plants i.e Danggui Longhui Wang, Hymenialdisine, Morin,  Salvia officinalis, Ginseng, helps in effective treatment of disease and hence a step forward to reduce the prevalence of Alzheimer disease.
Charm pendants found among the Roman-time antiquities of the south-eastern Baltic region
Authors: Kulakov V.I.
Published: February 2020

The article is aimed at tracing the origin of Roman pendants (referred to as ‘charms’ in Baltic archaeology), dating them and, if possible, determining their semantic meaning. The analysis of these artefacts, found among the antiquities from the mouth of the Vistula River and south-eastern Baltic states, leads to the following conclu-sions. Hellenistic glass pendants in the form of amphorisks were supposedly the predecessors of charm pendants in question. In the early Roman time, German masters began to imitate them in the form of amber 8-shaped pen-dants. On the western edge of the Baltic world, these pendants appeared in phase C1b. In the Masurian Lake District, bronze charm pendants of the subtypes Mączyńska 530a, 530 spread somewhat earlier. They were a symbol of the divine power of Donar/Heracles, displaying his club. Pendants in the form of pinheads, occasionally found among the antiquities of the Aesti in the final phase of Roman time, are genetically ascending to these finds. Presumably, they can be associated with Scandinavian two-eyed hollow pendants, which were used to keep incense. In the Merovingian era, the tradition of using these types of pendants among the Prussians faded.
Theoretical Approach to the Investigation of Films Occurring at Crude Oil-Water Interfaces
Authors: Harvey Robert R.
Published: February 2020

Published in Petroleum Transactions, AIME, Volume 219, 1960, pages 350–353.

Recent evidence has indicated that the films forming at crude oil-water interfaces are the result of naturally occurring surface-active components in the crude oil rather than oxidation products resulting from exposure of the oil to air. Since the presence of such films may strongly affect the displacement of oil from porous media, a knowledge of their composition and formation is of fundamental importance.

In this study, without the assumption of a specific mechanism, film formation is considered to involve the transfer of a weakly surface-active species in solution in the oil to the oil-water interface. The film gas law and the Gibbs adsorption equation may thus be applied to the system.

The rigid films which form upon decrease of the oil-water interfacial area are considered a result of the very slow rate of re-solution of the film material into the oil. When the shrinkage of the interface is very rapid, the amount of film material leaving the interface is negligible, and the system may then be treated in the same manner as an insoluble film.

The combination of these treatments leads to a new concept of the film factor in which it may be quantitatively related to the concentration of film-forming material at the interface. Suitable experiments can then yield the following information.Original concentration of surface-active species in the oil.The change of concentration with time.Concentration of surface active species at the interface.The change of this concentration with time.Interfacial tension of the System at any time and its variation with time.Equilibrium concentrations for a given set of conditions.Concentration requirements for solid film formation.Molecular diameter of the adsorbed species.

These calculations may be made solely from data taken from measurements on the original oil.
Measurement of the Dynamic Characteristics of Perforating Shaped Charges by the Use of Ultra High-Speed Photographic Techniques
Authors: Brink David E. , Poulter Thomas C. , Caldwell Blake M.
Published: February 2020

Published in Petroleum Transactions, AIME, Volume 219, 1960, pages 257–263.

The flash X-ray has been used more than a decade to study the configuration of the jet from a shaped charge. The high-speed, rotating-mirror smear camera has provided time-distance graphs of detonations and shock fronts in transparent material, and the high-speed framing camera has given pictorial representations of the progress of explosive phenomena.

Adequate means for measuring the paths and velocities of all parts of the shaped-charge cavity liner during the collapse phase have not existed heretofore. A technique enabling the single-lens framing camera to make stereoscopic photographs of the cavity liner while it is collapsing has been developed. Analysis of this photographic record gives the directions and velocities of various parts of the liner surface, permitting direct quantitative measurement where this has previously been impossible. Significant improvements in shaped-charge design are expected to result.

Introduction

The familiar oilwell jet perforating charge, generally referred to as a "shaped charge", is related to the Munroe charge first described by C. E. Munroe in 1888 and later by Neumann in 1910. It differs in construction from the Munroe charge in that its cavity is lined with some inert material (usually metal), and it differs in performance by projecting a fast jet of dense liner material against the target instead of a stream of expanding detonation products.

Fig. 1 represents a typical shaped charge in axial cross section. The charge is circularly symmetrical about its longitudinal axis. The cavity at the right is lined with metal, usually copper; and, with the exception of air, the liner is otherwise completely empty. High-explosive material is intimately in contact with the convex surface of the liner and extends in the other direction to the booster. This is a pellet of high explosive having somewhat different characteristics and serves to couple the detonator to the main charge.
Geology of Southwest Texas
Authors: McClain O.G.
Published: February 2020

Oil Recovery Symposium on Southwest Texas, 29–30 October, Corpus Christi, Texas

Introduction

Since the problems mutually faced by both petroleum geologists and engineers are exploration, development and production of oil and gas, various aspects of the geology of Southwest Texas pertinent to these problems are presented in this paper. Southwest Texas is considered geographically to occupy Railroad Commission Districts 2 and 4 and the southeastern portion of District 1.Structure, stratigraphy and sedimentation are of critical interest to petroleum geologists and petroleum engineers. These will be sketched in broad outline so as to provide a framework and pertinent detail then added.

Structure

Fig. 1 is an outline map of Southwest Texas on which the following data are noted:Railroad Commission Districts 2 and 4 and part of 1.The paths of four cross sections.The producing trends.The Vicksburg Flexure.

To understand the structure and stratigraphy of Southwest Texas a series of cross sections are most helpful. Fig. 2 through 7 are regional cross sections approximately normal to the coast and to the strike. They show coastward dip and coastward thickening of the formations. Fig. 8 is approximately a strike section along the lower coast showing thickening into the Rio Grande Embayment.

In a larger context, Southwest Texas is situated on the southwestern flank of a large basin, the central part of which is now occupied by the Gulf of Mexico. The long axis of this basin is near the shore of and parallel with the present Texas coast line. Strikewise along this southwest flank there are alternating areas that have received a preponderance of sediments, having had a relative subsidence to accommodate them and intervening areas of relative stability which have generally thinner sedimentary sections The Rio Grande Embayment, with the present day Rio Grande River being near or shortly to the south of its axis, has received an added thickness of sediments. During times of advance of the sea it was deeper than the adjacent areas, so that rivers brought more sediments into it and deposited them farther inland. During times of recession the area remained relatively low and the rivers continued to flow into and across it, depositing great quantities of sediments.
The Problem of Determining Petroleum Reservoir Rock Wettability
Authors: Dodd Charles G.
Published: February 2020

Secondary Recovery Conference, 2–3 May, Wichita Falls, Texas

Introduction

Soil scientists were probably the first research investigators to study the role of capillarity and capillary forces in determining the static distribution of water and air in porous rocks. These workers developed the "and pressure" concept, as applied to porous sands, based on the fundamental Laplace equation of capillarity relating the pressure difference across a curved fluid interface to the interfacial tension and principal radii of curvature. In addition to interfacial tension it was recognized that the contact angle at the solid water interface played an important role in determining the distribution of fluids within porous sands or soils, but the assumption generally was made that this contact angle as measured through water was zero. In a petroleum reservoir, however, consisting of a porous rock system containing oil, water, and gas the angle of contact cannot be neglected, when considering the capillary pressure, because there is considerably less certainty that it is always near zero as measured through the water phase.

In 1940 Leverett developed the idealized capillary model of static equilibrium between fluid phases in a sandstone rock. This work, together with that of Buckley and Leverett, has been used as a basis for the approximate solution of reservoir engineering problems involving the calculation of reserves or the advance of a displacing gas or water front.

The displacement of one fluid by another on the surface of the solid involves changes in the energy of the system. In systems such as an interface between two immiscible fluid phases in a capillary tube, contact angle measurements permit the quantitative prediction of the pressure required for one fluid to displace another. When an attempt is made, however, to apply this concept to study the behavior of a petroleum reservoir, numerous difficulties arise which detract from its usefulness.
Reinforced Temperature Activated Polymer Plug Completely Isolates Naturally Fractured Water Producing Sandstone in a High Temperature Environment
Authors: Fazal Adnan , Yousuf Arif , Rehman Azir ur , Dar Afnan , Temuri Saqib Jah , Mahmood Azfar , Sattar Abdul , Akbar Nabeel
Published: February 2020

Water production or cross flow during production phase is highly undesirable as it incurs additional costs of water handling at surface and reduces relative permeability of hydrocarbons to flow. Problems associated with water production or its cross flow escalate in depleted and HT wells limiting water shut-off options. Long-term zonal isolation to prevent unwanted fluids and cross flow is challenging in such wells due to the need of proper placement in the targeted zone, compatibility of fluid/tool with the downhole temperature and its sustainability. The use of mechanical plugs including packing elements have limitation of application in some instances due to high temperature and odd sized tubulars.

Having the abovesaid limitations, an engineering solution was made by testing and implementing reinforced Polymer Gel (a polymer-based gel loaded with silica sand) providing right angle set properties upon exposure to the given temperatures. The aforesaid combination produces a rigid, robust gel structure ideal for shutoff treatments into fractured, vugular and high permeability formations. Such gels can penetrate deep into the matrix or small fissures where the mechanical packers cannot reach to shut off the excess water.

This paper demonstrates the assessments to counter above challenges and application of re-enforced temperature activated anionic polymer for water shut off in candidate wells in Southern & Northern regions of Pakistan.
Mechanism Study on Wettability and Experiments in Removal of Water Blocking in Unconventional Reservoir
Authors: Zhu Qi
Published: February 2020

Hydraulic fracturing and drilling are commonly and widely used in many formations, particularly in unconventional reservoirs, such as tight sandstone reservoirs and so on. Whereas, during the fracturing or drilling process, large quantities of fluids are lost in the formation. Specially, many gas wells suffer a loss in productivity as a result of liquid invasion into the rock matrix. Liquid invasion is referred to as "water blocking", which is the primary damage that occurs in tight reservoirs and in low-permeability and ultra-low-permeability reservoirs. Some methods and materials, like methanol, are used to eliminate "water blocking", but only providing a temporary solution to the problem.

This paper introduces a hydrophobic wettability function and mechanisem that effectively eliminates "water blocking" on the tight sandstone. The results from wettability experiments using tight sandstone show that hydrophobic wettability function on the sandstone surface, making a contact angle greater than 90°. The inner wall of capillary tube changes wettability and the capillary pressure becomes a positive driving force rather than a negative resistance. The experimental studies demonstrate that altering the wettability of tight sandstone to produce a hydrophobic surface is a viable method for recovering permeability and eliminating "water blocking".