bluuebunny/crossref_metadata_2025_split huggingface dataset:
Divertículos en yeyuno
Authors: Navarro Moya Silvia , Ramírez Valverde José Miguel 
Published: September 2016

Paciente masculino de 55 años, costarricense, constructor, con historia de sangrado digestivo alto secundario a consumo de anti-inflamatorios no esteroideos, consulta por cuadro de tres días de evolución de hematoquecia, se realiza gastroscopía que evidencia gastritis erosiva, por lo que paciente es egresado con tratamiento oral. Dos días después paciente reconsulta al servicio de emergencias con cuadro de hematoquecia, se documenta sangrado digestivo bajo, laboratorios evidencian anemia profunda por lo cual amerita transfusión masiva. La colonoscopía documenta divertículos aislados en colon sigmoides, el paciente es dejado en observación, y horasdespués presenta inestabilidad hemodinámica, por lo que se decide llevar a sala de operaciones, se documentan divertículos con sangrado activo en yeyuno y se resecan 80 cm del mismo. Paciente es trasladado a Unidad Cuidados Intensivos en el postoperatorio inmediato y es egresado seis días después sin complicaciones.
ISLA DEL COCO Patrimonio natural y cultural de Costa Rica.
Authors: Briceño Rodríguez Luis Fernando 
Published: September 2016

ISLA DEL COCO – Patrimonio natural y cultural de Costa Rica es un libro que aborda en una forma integral aspectos geográficos, históricos, legales y naturales de la isla; así como la narrativa de las vivencias del autor durante sus viajes a este Parque Nacional costarricense Con esta publicación el autor pretende “trasladar mentalmente” a sus lectores a tan paradisiaco sitio insular y transmitir la importancia que la Isla del Coco representa para Costa Rica
Patogénesis de la enfermedad por virus del dengue. Revisión de la literatura
Authors: Beita Jiménez Josué , Salazar Arias Nazaret , Valverde Gòmez Michael 
Published: September 2016

El virus del dengue (DENV) pertenece a la Familia Flaviviridae, es transmitido por mosquitos del género Aedes; presenta una distribución mundial extensa, por lo que representa un problema de salud pública. Es un virus ARN, con tropismos por múltiples células en el Humano, con un ciclo de reproducción bien establecido y estudiado. Ese ARN codifica para tres proteínas estructurales y siete no estructurales, con diferentes funciones e implicaciones patogénicas. Presenta 5 serotipos, 4 de importancia médica actual. Puede presentarse de manera asintomática o sintomática. Este último se clasifica según la Organización Mundial de la Saludo (OMS) como Dengue y Dengue grave, el primero autolimitado y sin implicaciones severas, y el segundo con consecuencias clínicas que van desde fuga capilar leve, hasta formación de terceros espacios, fenómenos hemorrágicos, alteraciones gastrointestinales y neurológicas e inestabilidad hemodinámica. Se ha identificado una respuesta inmune a una primo infección que por lo general es menos severa que la segunda infección por un serotipo heterólogo. En este último escenario, se puede dar una respuesta intensificada anticuerpo dependiente (traducción del inglés antibodydependent enhancement), que aumenta la respuesta inflamatoria y tiene el potencial de causar un deterioro mayor, favoreciendo las presentaciones clínicas de Dengue severo
ANÁLISIS CLÍNICO: Una remembranza
Authors: Briceño Rodríguez Luis Fernando 
Published: September 2016

Recorrido histórico de Análisis Clínico –interpretación de la información–, desde sus inicios al presente; disciplina que ha fortalecido la formación universitaria de pregrado, grado y posgrado médicos. Se valora la temática de información y formación, y evalúa conceptos actuales sobre la enseñanza-aprendizaje. Un recuerdo para todos aquellos que hemos forjado nuestra formación académica y/o profesional, completa o en parte en el Hospital San Juan de Dios, entre los años setenta al 2016
Nap, Hold, csillagok. A holdciklusok, napkitörések és mágneses viharok hatása az öngyilkosságokra
Authors: Kmetty Zoltán , Bozsonyi Károly , Tomasovszky Álmos 
Published: September 2016

Elméleti háttér
Az öngyilkosság-kutatások nagyon széles bázison vizsgálják a lehetséges rizikófaktorokat. Már az 1960-as években megjelentek olyan kutatások, amelyek a holdciklus öngyilkosságra gyakorolt lehetséges hatását próbálták meg feltárni. Az ezzel foglalkozó eddigi munkák felemás eredményt hoztak, de inkább arra mutattak, hogy a vizsgálatok középpontjába állított teliholdnak nincsen összefüggése a vizsgált kérdéssel. A különböző naptevékenységek (napkitörés) és ezek földi hatása (mágneses vihar) már kevésbé kutatott téma az öngyilkosság szempontjából. Az eddig eredmények viszont arra mutattak, hogy lehet összefüggés a jelenségek között, bár a csatolási mechanizmust már nem érintették ezek a munkák.

Cél
A tanulmány célja megvizsgálni a holdciklus a napkitörések és a mágneses viharok együtt járását az öngyilkossági gyakoriságokkal. A tanulmányunkban felhasznált több mint 30 évnyi napi magyar öngyilkossági idősor lehetőséget teremt számunkra, hogy más munkákhoz képest sokkal részletesebben tudjuk körbejárni a kérdéskört.

Módszer
Tanulmányunkban az 1976 és 2010 közötti magyarországi öngyilkosságok számának napi normált számát (12784 nap) vizsgáljuk meg a holdciklusok, a napkitörések és a mágneses viharok aspektusából. Az öngyilkossági idősor esetében az évi lakosságszámra normált számok mellett a szezonálisan dekomponált idősorokat is vizsgáljuk (amelyekből a trend- és szezonhatásokat már eltávolítottuk). A holdciklus esetében elsősorban a teliholdra koncentrálunk, a napkitörés esetében külön vizsgáljuk az összes mérhető napkitörést és az erősebb (M/X) napkitöréseket, míg a mágneses viharok esetében a közepes (Ap > 39) és erős (Ap > 100) mágneses viharokat különítjük el. Az egyes jelenségek által érintett és nem érintett napok átlagainak különbségét, Student-féle t-próbával, Welch-féle d-próbával, és ezek rang változataival vizsgáljuk.

Eredmények
A telihold esetében az eredményeink arra mutatnak, hogy a jelenség nem függ össze az öngyilkossággal (csak a nők esetében mutatkozik egy gyenge kapcsolat, és az is csak a normált modellekben). A napkitörések és mágneses viharok vizsgálata már több szignifikáns ösz- szefüggést mutatott, mind a teljes, mind a női és férfi idősorban. Ezt azonban okozhatta a szezon komponens együttmozgása is, mivel a detrendelt és deszezonalizált öngyilkossági idősor esetében ezek az összefüggések már nem voltak azonosíthatók.

Következtetés
A napkitörések és mágneses viharok esetében érdemes tovább folytatni a vizsgálatokat komplexebb statisztikai modellekkel is.
Microstructure formation and abrasive wear resistance of a boron-modified superduplex stainless steel produced by spray forming
Authors: Soyama Juliano , Zepon Guilherme , Lopes Thiago Pama , Beraldo Leamar , Kiminami Claudio Shyinti , Botta Walter José , Bolfarini Claudemiro 
Published: September 2016

Abstract
ỨNG DỤNG ĐẠI SỐ GIA TỬ TRONG DỰ BÁO CHUỖI THỜI GIAN MỜ
Authors: Hồ Nguyễn Cát , Điều Nguyễn Công , Lân Vũ Như 
Published: September 2016

Fuzzy time series given by Song & Chissom (1993) in magazine "Fuzzy Sets and Systems" has been widely studied for forecasting purposes. However, the accuracy of forecasts based on the concept of fuzzy approach of Song & Chissom is not high because of such depends on many factors. Chen (1996) proposed an efficient fuzzy time series model which consists of simple arithmetic calculations only. After that, this has been widely studied for improving accuracy of forecasting in many applications to get better results. The hedge algebras developed by Nguyen and Wechler (1990) was completely different from the fuzzy approach. Here the hedge algebras was used to model linguistic domains and variables and their semantic structure is obtained. Instead of performing fuzzification and defuzzification, more simple methods are adopted, termed as semantization and desemantization, respectively. The hedge algebras based fuzzy system is a new topic, which was first applied to fuzzy control 2008 [16]. Hedge algebras applications for some specific problems in the field of information technology and control has a number of important results and confirm advantages of this approach in comparing with fuzzy approach. In continuilty of hedge algebras applications, this paper is mainly focused on the field of fuzzy time series forecasting under hedge algebras approach. In this paper, we present a new approach using hedge algebras to provide a computational model, which is completely different from the fuzzy approach for fuzzy time series forecasting. The experimental results of forecasting enrollments of students of the University of Alabama show that the model of fuzzy time series based on hedge algebras is better than many existing models. We can see that the proposed model gains higher forecasting accuracy than the original model presented by Song and Chissom (1993b), Chen (1996, 2002), or Lee (2009), Qiu (2011), Egrioglu (2012), Ozdemir ( 2012) and Uslu (2013).
The Effect of an LGBTQ Themed Literary Instructional Unit on Adolescents’ Homophobia
Authors: Malo-Juvera Victor 
Published: September 2016

Numerous scholarly works extol the use of LGBTQ themed literature as part of English language arts instruction with the implication that its use may improve the school climate for LGBTQ students; however, there is a dearth of research that empirically examines whether or not this type of instruction measurably impacts adolescents’ homophobia. To address this paucity, this study examined the ability of a dialogically organized, reader response–based instructional unit of the young adult novel Geography Club to reduce adolescents’ homophobia. A quasi-experimental design was used with eighth grade students in seven English language arts classes. Homophobia was measured using a researcher-created scale. Analysis of pretests revealed that girls had lower levels of homophobia than boys and that Black students had higher levels of homophobia than Hispanic students. Posttest results indicated that the intervention was successful in lowering homophobia. Exploratory factor analysis revealed a three factor solution: Interpersonal Homophobia, Attitudes toward Homophobia, and Sexuality as a Choice. Post-hoc tests revealed differing effect sizes for the aforementioned factors as well as showing that there was no backlash to treatment in participants with high pretest homophobia. This paper argues that schools and teacher education programs should make a serious effort to incorporate LGBTQ themed texts into curricula as part of a concerted effort to reduce the culture of homophobic violence that has become institutionalized in many schools.
Labor Contractors, Coyotes, and Travelers: The migration industry in Latin America and the U.S. South
Authors: Griffith David 
Published: September 2016

During the 1990s, migration researchers in sociology and anthropology focused disproportionately on the idea of transnationalism, leading to investigations of critically important phenomena such as transnational parenting, diaspora politics and identity, flexible citizenship, social remittances, and other factors influencing the experiences of international migrants. This work also produced comprehensive ethnographic accounts of families and communities with attachments to places in two or more countries, profiling peoples who had forged dynamic relations between sending and receiving neighborhoods based on economic opportunities, cultural exchanges, and social networks. The argument presented here offers a slightly different perspective on transnationalism, examining managed migration and the migration industry that has emerged around labor contractors, human smugglers (coyotes), and travelers who routinely carry goods between migrant sending and receiving communities. While this industry facilitates transnationalism, like transnationalism it is ultimately a symptom of a process more comprehensive than international migration: capital’s desire for a highly flexible labor force that expands and contractsseasonally and in response to periods of economic growth and decline, is highly mobile, and is largely separated from reproductive settings.
Do arthropod assemblages fit the grassland and savanna biomes of South Africa?
Authors: Botha Monique , Siebert Stefan J. , Van den Berg Johnnie 
Published: September 2016

The long-standing tradition of classifying South Africa’s biogeographical area into biomes is commonly linked to vegetation structure and climate. Because arthropod communities are often governed by both these factors, it can be expected that arthropod communities would fit the biomes. To test this hypothesis, we considered how well arthropod species assemblages fit South Africa’s grassy biomes. Arthropod assemblages were sampled from six localities across the grassland and savanna biomes by means of suction sampling, to determine whether the two biomes have distinctive arthropod assemblages. Arthropod samples of these biomes clustered separately in multidimensional scaling analyses. Within biomes, arthropod assemblages were more distinctive for savanna localities than grassland. Arthropod samples of the two biomes clustered together when trophic groups were considered separately, suggesting some similarity in functional assemblages. Dissimilarity was greatest between biomes for phytophagous and predacious trophic groups, with most pronounced differentiation between biomes at sub-escarpment localities. Our results indicate that different arthropod assemblages do fit the grassy biomes to some extent, but the pattern is not as clear as it is for plant species.

Significance:

Provides the first comparison of arthropod composition between grassland and savanna biomes of South Africa.
Explores whether these two biomes show distinct arthropod assemblages.
Documents the characteristics of arthropod assemblages.
Confirms that plant assemblages of biomes are more distinguishable than arthropod assemblages.
Drought, climate change and sustainability of water in agriculture: A roadmap towards the NWRS2
Authors: Chami Daniel El , Moujabber Maroun El 
Published: September 2016

The frequency and intensity of drought, extreme events and high wind velocities in South Africa are expected to increase in the next century as a result of the changing climate. The National Water Resource Strategy 2 (NWRS2) has set out the general and strategic directions for water resources management in the country for the next 20 years. However, the strategy does not draw a framework tailored specifically for agricultural use, with specific measures and goals. Therefore, to reach sustainability of water in agriculture, four major strategic goals are suggested, on which research institutions can focus and promote through good governance. The strategy emphasises: (1) crop research to find new drought-and heat- tolerant and resistant breeds and varieties; (2) intensified research in agricultural practices; (3) increasing the efficiency of water use within agriculture; and (4) integrating all these strategic goals within a sustainable research framework. Finally, the research calls for rapid action and implementation.

Significance:

The framework is proposed for stakeholders and policymakers in higher education, agriculture and resources management in South Africa for new research horizons at national level to improve overall agricultural sustainability by 2030 as stipulated by the Millennium Development Goals.
CULTURE CONTENT IN CREATIVE WRITING PRODUCT IN ENGLISH LEARNING
Authors: Rizal Sarif Syamsu 
Published: September 2016

Abstrak Muatan Budaya dalam Produk Menulis Kreatif dalam Pembelajaran Bahasa Inggris. Penelitian ini bertujuan untuk membahas muatan budaya dalam produk menulis kreatif dalam pemahaman bagaimana budaya lokal dapat dipromosikan melalui menulis kreatif. Penelitian ini mengeksplorasi unsur-unsur yang berpengaruh dalam proses penulisan kreatif hingga menjadi sebuah karya sastra sebagai sebuah karya utama. Metode penelitian ini berupa desain kualitatif dalam menjelaskan wacana, penelitian kepustakaan dalam mengumpulkan data, dan pendekatan kasual dalam menjawab pertanyaan penelitian yaitu bagaimana dan mengapa menulis kreatif dapat mempromosikan budaya lokal. Analisis unit meliputi faktor dalam unsur-unsur yang membangun karya sastra sebagai produk dari menulis kreatif yang dilakukan oleh penulis. Menulis adalah betuk kebebasan pribadi. Hal ini membebaskan penulis dari identitas massa yang dia lihat di sekitarnya. Pada akhirnya, ia akan menulis tidak untuk menjadi pahlawan penjahat bagi sebagian orang di suatu budaya tetapi terutama untuk menyelamatkan dirinya sendiri, untuk bertahan hidup sebagai individu. Rangkaian analisis dilakukan untuk mendapatkan penjelasan bagaimana budaya lokal dapat dipromosikan melalui menulis kreatif didasarkan pada dua subjek, yaitu penulis sebagai pencipta tulisan kreatif dan karya sastra sebagai produk dari menulis kreatif.Kata kunci: revelancy, culture, creative writing, literary work, author Abstract Culture Content in Creative Writing Product in English Learning. This study aims to discuss culture content in creative writing product as an understanding how local cultures can be promoted through creative writing. The study explores influencing elements in creative writing process up to be a literary work as a masterpiece. Methods of the study consist of qualitative design in explaining discourse, library research in collecting data, and casual approach in answering the problem statement that is how and why creative writing can promote local culture. Units of analysis cover the factors in the elements building the literary work as the product of creative writing conducted by author. Writing is a form of personal freedom. It frees the author from the mass identity he or she sees all around. In the end, he or she will write not to be outlaw hero of some under culture but mainly to save him or herself, to survive as individuals. The work is directly or indirectly related to the universe inclusive of man, material things, events and ideas. The reader somes as the final element. The series of analysis is conducted to find out the explanation how local cultures can be promoted through creative writing based on two subjects; the author as the creator of creative writing and the literary work as the product of creative writing.Keywords: revelancy, culture, creative writing, literary work, author
Aportes a la determinación de paleoambientes, carbones del sinclinal CHECUA-LENGUAZAQUE. Colombia
Authors: Gómez Neita Juan Sebastián , López Carrasquilla Mayra Dayana , Manosalva Sánchez Sandra Rocio , Naranjo Merchán Wilson Enario 
Published: September 2016

El presente estudio, tuvo como objetivo realizar nuevos aportes al conocimiento e interpretación del paleoambiente de los carbones de la Formación Guaduas, de edad Maestrichtiano Superior a Paleoceno. Se realizó el análisis petrográfico de 64 muestras colectadas con el método de canal en tres secciones del sinclinal de Checua-Lenguazaque (Sutatausa, Guachetá y Samacá), estableciéndose que los carbones están compuestos principalmente por macerales del grupo de la vitrinita con porcentajes entre (51.4% - 87%), seguidos por los de la inertinita (5.4% - 43.8%), liptinita (0.2% - 14%), y materia mineral (0.4% - 18%). La reflectancia media de la vitrinita varió de 0,69 a 1,6; con rango de carbones bituminosos C a bituminosos A. La lectura maceral permitió determinar la distribución de los componentes orgánicos del carbón a fin de aplicar la metodología propuesta por Diessel (1992) y la usada por Singh & Singh (2000) para la definición de paleoambientes; concluyéndose que los carbones de los bloques Guachetá y Samacá fueron depositados en ambientes de zonas protegidas por barreras y ciénagas principalmente, mientras que los carbones del bloque Sutatausa se extendieron hasta pantanos de bosque húmedo. La tabla de agua aunque variable cubría la turbera, lo cual favoreció la conservación de la materia orgánica frente a la oxidación.
AMPLIFICADOR OPERACIONAL DE TRANSCONDUCTANCIA CON ALTO RANGO MODO COMÚN Y BAJO CONSUMO DE POTENCIA
Authors: Gómez Ortiz Héctor Iván , Angarita Cediel Francisco , Neira Triana Carlos Andrés 
Published: September 2016

En este artículo se presenta el diseño de un amplificador operacional de transconductancia OTA, operando en la región para bajo consumo de potencia en sub-umbral. Donde se realizaron simulaciones con las herramientas del programa SYNOPSYS para la tecnología de 180nm. El amplificador diferencial es alimentado con un VDD de 600mV, y tiene una capacitancia de carga de 15pF. El amplificador tiene una ganancia de 60,08dB con una frecuencia de ganancia unitaria de 21.7kHz, y margen de fase de más de 50 grados. Alcanzando una amplia operación en modo común por el uso de pares diferenciales de entrada complementarios (NMOS y PMOS) que muestra un rango de operación de 500mV.
Optimization of Apparent Peak Viscosity in Carboxymethyl Cellulose Fracturing Fluid: Interactions of High Total Dissolved Solids, pH Value, and Crosslinker Concentration
Authors: Pica N. E. , Terry C.. , Carlson K.. 
Published: September 2016

SummaryIt has been common practice to use a freshwater source (either ground water or surface water) as the base fluid for hydraulic fracturing with crosslinked-gel fluids. Currently, oil and gas operators are beginning to reuse and recycle the main byproduct of oil extraction, which is produced water. However, because of the high variability of produced-water quality (temporal and spatial), and the high content of total dissolved solids (TDS), the viscosity targets for the fluid can be difficult to achieve. The research described in this paper examines the sensitivity of higher-salinity waters to several variables related to the gel-formation process. The polymer used for the gel fluid was a carboxymethyl cellulose (CMC) derivative, and zirconium (Zr) was used as the crosslinking metal. Rheology experiments were conducted at different pH values, polymer loading, and crosslinker concentrations. The outcome of this research is presented in 3D contour-peak-viscosity maps that can be used by oil and gas operators and service companies to optimize the chemicals that are applied, thus reducing costs.
Positional loss of pacemaker capture in a patient for hemi‐arthroplasty
Authors: Greenlee Hannah , Loukovitis Konstantinos , Drummond Andrew , Sochart David 
Published: September 2016

SummaryWe report the case of a patient where loss of capture by a pacemaker occurred when they were placed in the lateral position for hip surgery. Cardiac output was lost but capture and output were restored on turning the patient back into the supine position for chest compressions. We hypothesise either a pacing wire displacement or possibly a new ischaemic event as the cause. This appears to have been a rare complication in a patient with an established pacemaker.