bluuebunny/crossref_metadata_2025 huggingface dataset:
Managing Surface Water Inputs to Reduce Phosphorus Loss from Cranberry Farms
Authors: Kennedy Casey D. , Kleinman Peter J.A. , DeMoranville Carolyn J. , Elkin Kyle R. , Bryant Ray B. , Buda Anthony R.
Published: November 2017

Cranberry (Vaccinium macrocarpon Ait.) production in Massachusetts represents one‐fourth of the US cranberry supply, but water quality concerns, water use, and wetland protection laws challenge the future viability of the state's cranberry industry. Pond water used for harvest and winter flooding accounts for up to two‐thirds of phosphorus (P) losses in drainage waters. Consequently, use of P sorbing salts to treat pond water holds promise in the mitigation of P losses from cranberry farms. Laboratory evaluation of aluminum (Al)‐, iron (Fe)‐, and calcium (Ca)‐based salts was conducted to determine the application rate required for reducing P in shallow (0.4 m) and deep (3.2 m) water ponds used for cranberry production. Limited P removal (<22%) with calcium carbonate and calcium sulfate was consistent with their relatively low solubility in water. Calcium hydroxide reduced total P up to 49%, but increases in pond water pH (>8) could be detrimental to cranberry production. Ferric sulfate and aluminum sulfate applications of 15 mg L−1 (ppm) resulted in near‐complete removal of total P, which decreased from 49 ± 3 to <10 μg P L−1 (ppb). However, ferric sulfate application lowered pH below the recommend range for cranberry soils. Field testing of aluminum sulfate demonstrated that at a dose of 15 mg L−1 (∼1.4 Al mg L−1), total P in pond water was reduced by 78 to 94%. Laboratory and field experiments support the recommendation of aluminum sulfate as a cost‐effective remedial strategy for reducing elevated P in surface water used for cranberry production.

Core Ideas

Cranberry farming is challenged by water quality regulations for phosphorus.

Five salts were applied to reduce P in pond water used for cranberry production.

Calcium, iron, and aluminum affected P solubility and pH of pond water differently.

Alum appears best suited to the task of removing P from cranberry pond waters.
Evaluation of the APEX Model to Simulate Runoff Quality from Agricultural Fields in the Southern Region of the United States
Authors: Ramirez‐Avila John J. , Radcliffe David E. , Osmond Deanna , Bolster Carl , Sharpley Andrew , Ortega‐Achury Sandra L. , Forsberg Adam , Oldham J. Larry
Published: November 2017

The Agricultural Policy Environmental eXtender (APEX) model has been widely applied to assess phosphorus (P) loss in runoff water and has been proposed as a model to support practical decisions regarding agricultural P management, as well as a model to evaluate tools such as the P Index. The aim of this study is to evaluate the performance of APEX to simulate P losses from agricultural systems to determine its potential use for refinement or replacement of the P Index in the southern region of the United States. Uncalibrated and calibrated APEX model predictions were compared against measured water quality data from row crop fields in North Carolina and Mississippi and pasture fields in Arkansas and Georgia. Calibrated models satisfactorily predicted event‐based surface runoff volumes at all sites (Nash‐Sutcliffe efficiency [NSE] > 0.47, |percent bias [PBIAS]| < 34) except Arkansas (NSE < 0.11, |PBIAS| < 50) but did not satisfactory simulate sediment, dissolved P, or total P losses in runoff water. The APEX model tended to underestimate dissolved and total P losses from fields where manure was surface applied. The model also overestimated sediments and total P loads during irrigation events. We conclude that the capability of APEX to predict sediment and P losses is limited, and consequently so is the potential for using APEX to make P management recommendations to improve P Indices in the southern United States.

Core Ideas

Calibrated APEX reasonably predicted runoff in no‐tillage and conventional tillage fields.

APEX was unsatisfactory in predicting sediment losses, especially from pasture fields.

P loss was inadequately predicted, especially in fields with surface applied manure.

Adding a surface manure P pool to APEX could improve P model predictions.

Improving P model predictions allow it to be used to refine southern region P Indices.
Integrated Crop‐Livestock Systems and Water Quality in the Northern Great Plains: Review of Current Practices and Future Research Needs
Authors: Faust Derek R. , Kumar Sandeep , Archer David W. , Hendrickson John R. , Kronberg Scott L. , Liebig Mark A.
Published: November 2017

Integrated crop‐livestock systems hold potential to achieve environmentally sustainable production of crop and livestock products. Although previous studies suggest that integrated crop‐livestock systems improve soil health, impacts of integrated crop‐livestock systems on water quality and aquatic ecosystems are largely unknown. This review (i) summarizes studies examining surface water quality and soil leachate for management practices commonly used in integrated crop‐livestock systems (e.g., no‐till, cover crops, livestock grazing) with emphasis on the Northern Great Plains ecoregion of North America, (ii) quantifies management system effects on nutrient and total suspended solids concentrations and loads, and (iii) identifies information gaps regarding water quality associated with integrated crop‐livestock systems and research needs in this area. In general, management practices used in integrated crop‐livestock systems reduced losses of total suspended solids, nitrogen (N), and phosphorus (P) in surface runoff and soil leachate. However, certain management practices (e.g., no‐till or reduced tillage) reduced losses of total N (relative median change = −65%), whereas soluble P losses in runoff increased (57%). Conversely, practices such as grazing increased median total suspended solids (22%), nitrate (45%), total N (85%), and total P (25%) concentrations and loads in surface runoff and aquatic ecosystems. An improved understanding of the interactive effects of integrated crop‐livestock management practices on surface water quality and soil leachate under current and future climate scenarios is urgently needed. To close this knowledge gap, future studies should focus on determining concentrations and loads of total suspended solids, N, P, and organic carbon in runoff and soil leachate from integrated crop‐livestock systems.

Core Ideas

Integrated crop‐livestock (ICL) systems may improve agricultural sustainability.

Water quality outcomes from ICL systems, however, are largely undocumented.

Published research on effects of ICL systems on water quality was reviewed.

ICL management practices generally reduced losses of suspended solids and nutrients.

Greater emphasis should be placed on collection of water quality data in ICL systems.
The Promise, Practice, and State of Planning Tools to Assess Site Vulnerability to Runoff Phosphorus Loss
Authors: Kleinman P. J. A. , Sharpley A. N. , Buda A. R. , Easton Z. M. , Lory J. A. , Osmond D. L. , Radcliffe D. E. , Nelson N. O. , Veith T. L. , Doody D. G.
Published: November 2017

Over the past 20 yr, there has been a proliferation of phosphorus (P) site assessment tools for nutrient management planning, particularly in the United States. The 19 papers that make up this special section on P site assessment include decision support tools ranging from the P Index to fate‐and‐transport models to weather‐forecast‐based risk calculators. All require objective evaluation to ensure that they are effective in achieving intended benefits to protecting water quality. In the United States, efforts have been underway to compare, evaluate, and advance an array of P site assessment tools. Efforts to corroborate their performance using water quality monitoring data confirms previously documented discrepancies between different P site assessment tools but also highlights a surprisingly strong performance of many versions of the P Index as a predictor of water quality. At the same time, fate‐and‐transport models, often considered to be superior in their prediction of hydrology and water quality due to their complexity, reveal limitations when applied to site assessment. Indeed, one consistent theme from recent experience is the need to calibrate highly parameterized models. As P site assessment evolves, so too do routines representing important aspects of P cycling and transport. New classes of P site assessment tools are an opportunity to move P site assessment from general, strategic goals to web‐based tools supporting daily, operational decisions.

Core Ideas

Corroboration of decision support tools for controlling phosphorus loss is limited.

Phosphorus Index is often better related to water quality than fate‐and‐transport models.

New site assessment tools for phosphorus must undergo rigorous verification.

Informed calibration of fate and transport models often improves model performance.

Care must be taken not to overparameterize fate‐and‐transport models.
Growth and Transpiration Responses of Elephantgrass and Energycane to Soil Drying
Authors: Liang Xi , Erickson John E. , Sollenberger Lynn E. , Rowland Diane L. , Silveira Maria L. , Vermerris Wilfred
Published: November 2017

Elephantgrass (Pennisetum purpureum Schum.) and energycane (Saccharum spp.) are promising perennial bioenergy crops in the southeastern United States. Despite plentiful rainfall in this region, these perennial grasses have a long growing season and are subject to intermittent drying cycles frequently during summer and fall, yet there is little information on their response to intermittent drought stress. The objectives of this study were to investigate water relations of elephantgrass and energycane genotypes under optimal water inputs and in response to progressive soil drying. Three elephantgrass genotypes (‘UF‐1’, ‘Merkeron’, and ‘PI‐300086’) and three energycane genotypes (‘L79‐1002’, ‘US84‐1047’, and ‘875‐3’) were grown in a greenhouse. Under well‐watered conditions, elephantgrass and energycane exhibited similar daily and total water use, but energycane possessed greater average daily transpiration per unit leaf area (EAVE,leaf) and lower shoot transpiration efficiency (TEshoot) than elephantgrass. Consistent with EAVE, leaf, energycane demonstrated higher stomatal conductance than elephantgrass, but lower assimilation to transpiration ratio (A/T). Among all genotypes, UF‐1 elephantgrass exhibited relatively high A/T, shoot mass production, and TEshoot. In response to progressive soil drying, elephantgrass genotypes closed their stomata at a lower fraction of transpirable soil water and produced higher shoot mass during the drying cycle than energycane genotypes. The different plant water use patterns indicated a species difference in the sensitivity to mild drought stress and could be correlated with their stomatal density and size. The results from this study indicated that elephantgrass is more suited to the frequent mild drought stress between rainfall events common during summer in the southeastern United States.
Resilience in Forage and Grazinglands
Authors: Tracy B. F. , Foster J. L. , Butler T. J. , Islam M. A. , Toledo D. , Vendramini J. M. B.
Published: November 2017

The current reality of population growth, resource scarcity, and climate change requires resilient agroecosystems to sustain food production and protect the environment. This manuscript reflects a combined effort of speakers at the 2017 C6 Forage and Grazinglands Division Symposium, which was titled “Resiliency in Forage and Grazinglands.” The symposium brought together speakers representing a diverse cross‐section of forage systems across the United States. Each speaker discussed resilience‐related topics from their specific region, including: the importance of diversity and use of complementary forages in grazing systems, how grazing and defoliation affect resilience, the importance of soil fertility and pest management, and development of decision aids to evaluate resilience in grazinglands. Several themes emerged that we propose would help improve the resilience of forage and grazingland systems: (i) identifying moderately diverse, site‐specific mixtures (grasses–legumes) for use in specific regions of the United States, (ii) greater use of complementary forage species such as C3 and C4 grasses to lengthen the grazing season and provide a buffer against weather variation, (iii) adoption of moderate defoliation intensities to help stabilize forage production and species composition, (iv) more attention to maintaining and improving soil fertility to improve the productivity of desirable forage species and reduce weed pressure, and (v) increase adoption of assessment tools to evaluate the relative “health” and potential resilience of forage‐livestock systems. An integrative management approach that combines many of these elements would help improve the resilience of forage and grazinglands to sustain high productivity under increasingly erratic and extreme weather.
Rainfall Erosivity: An Overview of Methodologies and Applications
Authors: Yin Shuiqing , Nearing Mark A. , Borrelli Pasquale , Xue Xiaochan
Published: November 2017

Core Ideas

The R factor was developed in the various versions of the USLE.

Research on rainfall erosivity estimation methods, mapping, and temporal trends is summarized.

The RUSLE underestimates R factor values by about 10%.

Three approaches for developing erosivity maps are identified.

The rainfall erosivity factor (R factor) is one of six erosion factors in the Universal Soil Loss Equation (USLE), which together reflect the combined effects that cause soil loss by rill and interrill erosion on hillslopes by precipitation. It is defined as the summation of event EI30 (the product of kinetic energy and maximum 30‐min intensity) over a year and calculated based on rainfall hyetograph data. The R factor was developed in the various versions of the USLE, including the definition of the individual event and the criterion for selecting events used in the calculation, the equation used to estimate the unit kinetic energy from the rainfall intensity, the estimation of erosivity from the snowmelt and thaw, and erosivity mapping. Most research on rainfall erosivity deals with any of three aspects: developing estimation methods for deriving erosivity from courser resolution rainfall data (such as daily, monthly, and annual) but with greater spatial and temporal coverages than those from hyetograph data; preparing erosivity maps including those for annual average, monthly, and 10‐yr recurrence erosivity; and documenting temporal trends in erosivity. Rainfall erosivity research on these three aspects is summarized to provide a greater understanding of the R factor.
Tumor Reversion: Mesenchymal-Epithelial Transition as a Critical Step in Managing the Tumor-Microenvironment Cross-Talk
Authors: Bizzarri Mariano , Cucina Alessandra , Proietti Sara
Published: November 2017

Tumour reversion represents a promising field of investigation. The occurrence of cancer reversion
both in vitro and in vivo has been ascertained by an increasing number of reports. The reverting process may be
triggered in a wide range of different cancer types by both molecular and physical cues. This process encompasses
mandatorily a change in the cell-stroma interactions, leading to profound modification in tissue architecture.
Indeed, cancer reversion may be obtained by only resetting the overall burden of biophysical cues acting on
the cell-stroma system, thus indicating that conformational changes induced by cell shape and cytoskeleton remodelling
trigger downstream the cascade of molecular events required for phenotypic reversion. Ultimately,
epigenetic regulation of gene expression (chiefly involving presenilin-1 and translationally controlled tumour
protein) and modulation of a few critical biochemical pathways trigger the mesenchymal-epithelial transition,
deemed to be a stable cancer reversion. As cancer can be successfully ‘reprogrammed’ by modifying the dynamical
cross-talk with its microenvironment thus the cell-stroma interactions must be recognized as targets for pharmacological
intervention. Yet, understanding cancer reversion remains challenging and refinement in modelling
such processes in vitro as well as in vivo is urgently warranted. This new approach bears huge implications, from
both a theoretical and clinical perspective, as it may facilitate the design of a novel anticancer strategy focused on
mimicking or activating the tumour reversion pathway.
A Biomarker Combining Imaging and Neuropsychological Assessment for Tracking Early Alzheimer's Disease in Clinical Trials
Authors: Verma Nishant , Beretvas S. Natasha , Pascual Belen , Masdeu Joseph C. , Markey Mia K. , The Alzheimer's Disease Neuroimaging Initiative
Published: November 2017

Background:

Combining optimized cognitive (Alzheimer's Disease Assessment Scale-
Cognitive subscale, ADAS-Cog) and atrophy markers of Alzheimer's disease for tracking progression in
clinical trials may provide greater sensitivity than currently used methods, which have yielded negative
results in multiple recent trials. Furthermore, it is critical to clarify the relationship among the subcomponents
yielded by cognitive and imaging testing, to address the symptomatic and anatomical variability
of Alzheimer's disease.

Method:

Using latent variable analysis, we thoroughly investigated the relationship between cognitive
impairment, as assessed on the ADAS-Cog, and cerebral atrophy. A biomarker was developed for Alzheimer's
clinical trials that combines cognitive and atrophy markers.

Results:

Atrophy within specific brain regions was found to be closely related with impairment in cognitive
domains of memory, language, and praxis. The proposed biomarker showed significantly better sensitivity
in tracking progression of cognitive impairment than the ADAS-Cog in simulated trials and a
real world problem. The biomarker also improved the selection of MCI patients (78.8±4.9% specificity
at 80% sensitivity) that will evolve to Alzheimer's disease for clinical trials.

Conclusion:

The proposed biomarker provides a boost to the efficacy of clinical trials focused in the
mild cognitive impairment (MCI) stage by significantly improving the sensitivity to detect treatment
effects and improving the selection of MCI patients that will evolve to Alzheimer’s disease.
Enhanced Phosphorylation of Bax and Its Translocation into Mitochondria in the Brains of Individuals Affiliated with Alzheimer’s Disease
Authors: Henderson L.E. , Abdelmegeed M.A. , Yoo S.H. , Rhee S.G. , Zhu X. , Smith M.A. , Nguyen R.Q. , Perry G. , Song B.J.
Published: November 2017

Background:

Despite increased neuronal death, senile plaques, and neurofibrillary tangles observed in patients suffering from Alzheimer’s disease (AD), the detailed mechanism of cell death in AD is still poorly understood.

Method:

We hypothesized that p38 kinase activates and then phosphorylates Bax, leading to its translocation to mitochondria in AD brains compared to controls. The aim of this study was to investigate the role of p38 kinase in phosphorylation and sub-cellular localization of pro-apoptotic Bax in the frontal cortex of the brains from AD and control subjects. Increased oxidative stress in AD individuals compared to control was evaluated by measuring the levels of carbonylated proteins and oxidized peroxiredoxin, an antioxidant enzyme. The relative amounts of p38 kinase and phospho-Bax in mitochondria in AD brains and controls were determined by immunoblot analysis using the respective antibody against each protein following immunoprecipitation.

Results:

Our results showed that the levels of oxidized peroxiredoxin-SO3and carbonylated proteins are significantly elevated in AD brains compared to controls, demonstrating the increased oxidative stress.

Conclusion:

The amount of phospho-p38 kinase is increased in AD brains and the activated p38 kinase appears to phosphorylate Thr residue(s) of Bax, which leads to its mitochondrial translocation, contributing to apoptosis and ultimately, neurodegeneration.
Orthodontic Treatment Timing and Modalities in Anterior Open Bite: Case Series Study
Authors: Al Hamadi Wisam , Saleh Fayez , Kaddouha Mohamad
Published: November 2017

Objective:

The purpose of this study was to present early and adult cases of anterior open bite that were treated efficiently using different treatment approaches and mechanics.

Materials and Methods:

Five patients of different age groups (from 7 to 27 years), suffering from a clear Anterior open bite deformity, were properly diagnosed and relevant treatment modality for each was selected.

Results:

Positive overbite was efficiently achieved for all patients.

Conclusion:

Patient compliance is a key factor in using removable habit breakers. However, fixed palatal crib gave the same results but in shorter time. Anterior open bite of skeletal components should be thoroughly evaluated before selecting camouflage or orthognathic surgery treatment modality.
A STUDY OF VOCATIONAL INTEREST OF THE ADOLESCENTS IN RELATION TO THEIR INTELLIGENCE AND SOCIO-ECONOMIC STATUS
Authors: Asija Anurag
Published: November 2017

A Society in which people need money and in which there are many ways of earning it, choice of Vocation is a significant decision. Our nation is industrially and technically developing and commerce is advancing, a variety of new vocations have come into existence. So, the factors which influence the adolescents for aspiring any of these vocations need to be analyzed.
Lighting the flame of entrepreneurship among agribusiness students
Authors: Higgins Lindsey M. , Schroeter Christiane , Wright Carlyn
Published: November 2017

Entrepreneurship and innovation play a key role in combating problems facing agribusinesses, including the need for water conservation, sustainable packaging, and environmental protection. These issues have led to an increasing demand for college graduates with technical skills and innovative ways of thinking. The objective of our research is to provide insight into character traits that signal entrepreneurial skills. We conducted a survey to examine entrepreneurial interests and perspectives among U.S. agribusiness students. A cluster analysis revealed that entrepreneurial-minded students were more likely to be male, consider themselves risk takers, and have parents directly engaged in production agriculture. Our results emphasize the importance for universities to build students’ experiences through industry partnerships, where students can interact with entrepreneurial mentors and get hands-on knowledge through applied coursework and internships in entrepreneurship. In addition, our study aids industry managers to learn more about future employees and their perceptions of entrepreneurial activities.
Plano Nacional de Educação e a educação básica em Municípios das Regiões Meio-Oeste e Planalto Serrano Catarinenses
Authors: Pegoraro Ludimar , Ziede Mariangela Kraemer Lenz , Pinto Marialva Moog
Published: November 2017

O texto analisa o sistema de Educação Básica dos municípios pertencentes às Secretarias de Desenvolvimento Regional-SDRs de Santa Catarina, sediadas nos municípios de Caçador, Videira, Campos Novos e Curitibanos, compreendendo 26 municípios. As questões priorizadas pelo trabalho são: qual é a evolução do número de estudantes que frequentam as escolas de educação básica do Meio-Oeste e Planalto Serrano catarinenses, compreendendo as SDRs sediadas em Caçador, Videira, Campos Novos e Curitibanos? Como se dá a permanência desses estudantes nas diferentes etapas da educação básica? Através de pesquisa de campo realizada em 2014, o estudo mapeia a evolução de matrículas em cada SDR, município e escolas, identificando o número de estudantes em seus respectivos anos de escolaridade. Tomando o Plano Nacional de Educação (PNE/2014-2024) como base, a análise tem por finalidade elencar elementos que possibilitem a definição de políticas educacionais coletivas para a melhoria das instituições escolares, na perspectiva da permanência dos estudantes nas escolas, visando o desenvolvimento social nessa região. Na relação entre a educação, desenvolvimento sustentável e outros valores, ressalta-se a importância do desenvolvimento da consciência sobre a sustentabilidade do próprio desenvolvimento local e global.
Clinical performances of EuroSCORE II risk stratification model in Serbian cardiac surgical population: A single centre validation study including 10,048 patients
Authors: Nezic Dusko , Ragus Tatjana , Micovic Slobodan , Trajic Snezana , Spasojevic-Milin Biljana , Petrovic Ivana , Kosevic Dragana , Borzanovic Milorad
Published: November 2017

Background/Aim. The EuroSCORE II has recently been developed with an idea to provide better accuracy in prediction of perioperative mortality in the patients who underwent open heart surgery. The aim of this study was to validate clinical performances of the European System for Cardiac Operative Risk Evaluation (EuroSCORE) II risk stratification model in the Serbian adult cardiac surgical population undergoing open heart surgery. Methods. The Euro- SCORE II values on 10,048 consecutive patients undergoing major adult cardiac surgery from 1st January 2012 to 31st March 2017, were prospectively calculated and entered the institutional database. The discriminative power of the model was tested by calculating the area under the receiver operating characteristic curve (AUC). The calibration of the model was assessed by the Hosmer-Lemeshow (H-L) statistics and the observed to expected (O/E) mortality ratio. The patients with the EuroSCORE II values of 0.5?2.50%, > 2.50?6.50%), and > 6.50% were defined to be at low, moderate, and high perioperative risk, respectively. Results. The observed in-hospital mortality was 3.86% (388 of 10,048) and the mean predicted mortality by the Euro- SCORE II was 3.61%. The discriminatory power was very good for the entire cohort as well as for all subgroups [coronary, valve(s), combined (coronary plus valve), aortic and other] of performed cardiac procedures (all AUCs > 0.75). The H-L test confirmed good calibration only for category other cardiac procedures. The O/E mortality ratio confirmed good calibration for the whole sample [O/E ratio 1.07, 95% confidence interval (CI) 0.96?1.18] and for all subgroups of performed cardiac procedures, excluding significant underprediction of mortality for aortic surgery (O/E ratio 1.64; 95% CI 1.31?1.97). The EuroSCORE II overestimated perioperative risk in a low and underestimated perioperative risk in a high risk group, with acceptable discrimination (both AUCs = 0.72). On the contrary, the O/E mortality ratio confirmed good calibration for all three subcategories of high risk group. Conclusion. The results of our study confirmed acceptable overall performances of the EuroSCORE II risk stratification model in terms of discrimination and the accuracy of model when applied to the contemporary Serbian cardiac surgical cohort undergoing open heart surgery at our Institute.
Isochromosome der(17)(q10)t(15;17) in acute promyelocytic leukemia resulting in an additional copy of the RARA-PML and loss of one p53 gene: Report of two cases and literature review
Authors: Djordjevic Vesna , Dencic-Fekete Marija , Jovanovic Jelica , Virijevic Marijana , Kraguljac-Kurtovic Nada , Jakovic Ljubomir , Bogdanovic Andrija
Published: November 2017

Introduction. The isochromosome of the long arm of derivative chromosome 17, that originates from the translocation t(15;17) [ider(17)(q10)t(15;17), or ider(17q)] in acute promyelocytic leukemia (APL), is a rare chromosome aberration associated with a poor prognosis. Case report. We report the clinical and laboratory data associated with ider(17q) for two APL patients. Cytogenetic analysis of bone marrow cells in both cases showed a mosaic karyotype with the ider(17q); reverse transcription polymerase chain reaction (RT-PCR) was positive for the long (L) isoform of the retionic acid receptor alpha (PML-RARA) fusion transcript in each patient. Fluorescence in situ hybridization (FISH) analysis with the DNA probes for the PML gene on 15q24.1, and the RARA gene on 17q21.2, confirmed the extra copy of the RARA-PML fusion gene or ider(17q). Additionally, the FISH analysis with a DNA probe for the p53 gene on 17p13.1 confirmed loss of one copy of the universal tumor suppressor p53 in both patients. Conclusion. Both reported APL patients with ider(17q) had predominance of the clone with ider(17q) compared to those with t(15;17) and/or the normal karyotype, indicating that duplication of der(17) may provide a growth advantage allowing the relevant clone to become dominant. Moreover, as an important oncogenic event and poor prognostic factor in leukemia, loss of one gene copy of the tumor suppressor p53, may also contribute to this growth advantage. Although the clinical and prognostic significance for the patients with an ider(17q) remains unclear, cytogenetic and molecular-genetic analysis should be combined to reveal more details about this complex and rare chromosomal abnormality.
Congenital hairy polyp - a case report
Authors: Milankov Olgica , Jovic Rajko , Savic Radojica , Bjelica Milena
Published: November 2017

Introduction. Hairy polyp is a rare malformation which consists of mesodermal and ectodermal elements. It is the most common congenital nasopharyngeal tumour. The clinical symptoms depend on the size and localization of the mass. Early surgical excision results in permanent cure. Case report. The child was born from regularly controlled pregnancy. Prenatally, in the 24th week of gestation, epulis gigantocellularis was suspected, magnetic resonance imaging confirmed existence of protruding mass. Immediately after the birth, a tissue formation connected with the hard palate was observed protruding out of the mouth, as well as split of soft palate and tongue. In the first day of life the child was intubated and a mechanical ventilatory support started. In the fourth day of life, tracheostomy was performed. In the 40th day of life, the tumor mass was entirely excised with the reconstruction of the existing deformity of the mouth. The histopathological analysis confirmed the diagnosis of hairy polyp. In the fifth month of life, a percutaneous endoscopic gastrostomy was placed. At the beginning of the second age, the split of tongue and soft palate was sewn. With the establishment of normal swallowing, decannulation and closing of tracheostomy were performed and then gastrostomy was closed. Conclusion. Although the hairy polyp is a rare tumor, it must be included in the differential diagnosis of pharyngeal mass in the neonatal period. If there are no associated anomalies and if complete surgical resection of the tumor is performed, further course of the treatment will be favourable.
IDENTIFICACIÓN DE VARIACIÓN GENÉTICA EN POBLACIONES DE Streptococcus agalactiae MEDIANTE AMPLIFICACIÓN ALEATORIA DE POLIMORFISMOS DE ADN
Authors: Gutiérrez Bernal Wilmer Yobany , Arrieta Violet Leopoldo Antonio , Albesiano Sofía
Published: November 2017

En éste estudio se realizó la caracterización molecular mediante la técnica RAPD, usando los cebadores 10N y 19N, en poblaciones de Streptococcus agalactiae de leche de vacas con mastitis del departamento de Boyacá-Colombia, con el fin de identificar la variabilidad genética intraespecifica. Se realizaron amplificaciones al azar, para 10 aislamientos de ubre, 12 en cantinas de recolección y tres controles negativos (Streptococcus mutans, Streptococcus faecalis, Streptococcus pneumoniae). Se encontraron perfiles más similares para las amplificaciones de las muestras tratadas con los cebadores en la leche de la ubre, que los perfiles en las muestras aisladas de cantinas. El grado de similitud entre las muestras se analizó con UPGMA, mediante el índice de Jaccard, el cual identificó mayores variaciones genéticas en aislamientos bacterianos de cantina de recolección que los de la leche de la ubre. Estas variaciones genéticas surgen de la interacción entre poblaciones de microorganismos de diferentes hatos que logran llegar a estos medios de almacenamiento, aumentando el número de polimorfismos que pueden estar relacionados con la presencia de genes de resistencia a antibióticos.Palabras clave: RAPD, Streptococcus agalactiae, UPGMA y variación genética.
DESEMPEÑO DE UN CORRELADOR HIBRIDO DE TRANSFORMACION CONJUNTA A UNA RAPIDEZ DE PROCESAMIENTO MAYOR A LA VELOCIDAD DE VIDEO,CON UN SOLO PROCESADOR DIGITAL
Authors: Alfonso Joaquín Cornejo Bautista , Torres Moreno Yezid , Lasprilla Alvarez María Del Carmen
Published: November 2017

En este trabajo un correlador híbrido de transformación conjunta JTC de bajo costo que usa de manera complementaria las propiedades ópticas y las electrónicas, es implementado experimentalmente. Este correlador resuelve los mayores inconvenientes de un JTC óptico convencional. El JTC híbrido usa un único procesador digital de señales DSP para procesar la densidad espectral de energía conjunta JPS que es obtenida por vía óptica. La JPS de la escena y la referencia, colocadas en un modulador espacial de luz que actúa como plano de entrada, es obtenida en el plano focal imagen del procesador óptico. La adquisición digital de la JPS se hace mediante un sensor CCD que actúa como entrada al DSP. La reducción del pico central de energía de la JPS se realiza mediante un filtro óptico apodizante justo antes del sensor. Finalmente, el DSP realiza una transformación de Fourier digital de la JPS, controla todo el proceso y calcula las métricas de desempeño del correlador. Los requerimientos computacionales se reducen significativamente con la simetría hermítica de la transformada de Fourier realizada mediante el DSP para imágenes reales, esto es, que su velocidad de procesamiento lo hace hábil también para detectar objetos en escenas móviles.
TENDENCIA DE INVESTIGACIÓN CONTABLE EN COLOMBIA: TEORÍA O PRÁCTICA, UNA MIRADA DESDE LAS REVISTAS CONTABLES COLOMBIANAS 2011 A 2015
Authors: Beltran Jenny Paola Beltran , González Feliciano Luis Alfonso
Published: November 2017

El presente documento pretende identificar la tendencia de investigación en Colombia; teoría y práctica, a partir de la revisión entre el  2011 a 2015 de las revistas indexadas, relacionando temas de las ciencias económicas, administrativas y contables, los cuales abordan temas relacionados a las líneas de investigación en contabilidad. En este sentido, lo que se pretende demostrar a partir del desarrollo del documento es hacia cual tendencia está mas inclinada la investigación contable en Colombia; sí esta encaminada a desarrollo de fundamentos teóricos de la ciencia contable o sí en definitiva se relaciona a temas de carácter aplicado o práctico, dando solución desde la contabilidad a  problemáticas de carácter social y empresarial.
Publicaciones impresas
Authors: Perilla Janeth Bibiana
Published: November 2017

Sin resumen.
Sitios en internet
Authors: Cortés Fandiño Jaime Enrique
Published: November 2017

Sin resumen.
La Antinovela de los sesenta
Authors: Asqueta Corbellini María Cristina
Published: November 2017

La ponencia titulada La antinovela de los sesenta analiza una obra literaria publicada en Montevideo (Uruguay), en 1969 y que recibió un importante premio que otorgaba el reconocido semanario Marcha. La obra presenta características formales que la identifican con la vanguardia en la conformación de un texto cuyas significaciones tienen que ver con la autobiografía de un hombre joven, desde su infancia pueblerina hasta su vida universitaria en la capital uruguaya. Se construye así el contexto de los conflictos socioculturales característicos de los años sesenta en el Río de la Plata, tema que motivó el encuentro organizado por el CELCIRP, en junio de 2002.
Los micromedios: una red social para tejer relaciones de desarrollo comunitario
Authors: Pinto Dueñas Eliécer , Leal Roncancio Giovanny
Published: November 2017

Este texto nos describe un trabajo de campo que se inicio hace más de 15 meses y que actualmente continúa en la localidad cuarta de San Cristóbal, específicamente al interior de las Juntas de Acción Comunal de los barrios La Castaña, Las Amapolas y Ramajal. Lo que se ha logrado hasta el momento, demuestra que las redes sociales y los micromedios como sistema de comunicación participativo, son una alternativa para el desarrollo comunitario, pues, contribuyen a la reconstrucción del tejido social y a reforzar las estructuras de relaciones que se tejen en torno a la dinámica comunitaria de los barrios.El proyecto Red social comunitaria, ha demostrado que las ciencias de la comunicación al servicio de las comunidades de base, contribuyen a generar cambios coyunturales dentro de las dinámicas cotidianas, que presentan fragmentaciones relacionales y que no generan acciones colectivas concretas que lleven a las comunidades a un desarrollo efectivo y coherente con la realidad social del país.
Convocatoria permanente
Authors: Mediaciones Revista
Published: November 2017

Convocatoria permanente de la revista Mediaciones.
Unas rutas “políticamente incorrectas” a través de lo políticamente correcto
Authors: Hall Stuart
Published: November 2017

Lo políticamente correcto fue fiel a aquello que caracterizó al cambiante panorama político de comienzos de los noventa, y por lo tanto, sintomático de tendencias históricas más grandes. Este artículo intenta trazar el camino que lo políticamente correcto ha recorrido a través de sus contradicciones ubicándolo en su contexto histórico.
Cine colombiano: las garras de oro del canon
Authors: Zuluaga Pedro Adrián
Published: November 2017

Este artículo retoma las conclusiones principales del libro Cine colombiano: cánones y discursos dominantes (Pedro Adrián Zuluaga, Idartes, 2013), a la luz de dos hechos periodísticos (sendas publicaciones sobre la cultura y el cine colombianos de las revistas Arcadia y Semana) y un evento cultural (el Festival Internacional de Cine de Cartagena de Indias) posteriores a su publicación, los cuales ratifican esas conclusiones o, de forma parcial, las cuestionan. En el camino de este análisis, aparecen mecanismos de inclusión y exclusión que operan en la tradición cultural y responden a intereses institucionales, geopolíticos y geoestéticos.
Una mirada retrospectiva a la relación comunicación y desarrollo en américa latina después de segunda mitad del siglo XX
Authors: Camacho Alejandro
Published: November 2017

El documento plantea una mirada retrospectiva sobre la modernización y su relación con el concepto de desarrollo instituido de modo dominante en América Latina después de la segunda mitad del siglo XX, rastrea históricamente la manera como recurrentemente se han constituido algunas prácticas y discursos en torno a la comunicación para el desarrollo, ello se realiza también desde el análisis de las prácticas comunicativas, concepción y producción de conocimiento que se deriva de una de las propuestas colombianas pioneras en el ámbito de la comunicación para el desarrollo a nivel latinoamericano, las Radio Escuelas de Acción Cultural Popular ACPO.
Entre aficionados y anti-taurinos apuntes para una discusión sobre la tauromaquia sin esencialismos
Authors: Zapata Cortés Diana Catalina
Published: November 2017

Este artículo reflexiona en torno a la polémica suscitada tras la decisión del gobierno distrital en el año 2012 de prohibir la celebración de eventos taurinos en Bogotá. Se argumenta que la discusión entre los movimientos anti-taurinos y los aficionados a la fiesta brava se establece sobre la episteme binaria civilización/barbarie, articuladora de diferentes experiencias de dominación material y simbólica de la modernidad. La polémica se analiza a partir de algunas intervenciones hechas por representantes de ambas partes encontradas, en foros de opinión y redes sociales. Se llama la atención sobre la necesidad de abordar esta discusión desde una perspectiva de cultura no esencialista, que haga posible dilucidar las bipolíticas que hay tras la conflictiva definición hombre-animal y superar los dogmatismos que permiten su fácil instrumentalización.
Memoria y subjetividad: una relación discontinua entre narrativa y temporalidad para la enunciación del sujeto colectivo
Authors: Sepulveda Alejandro
Published: November 2017

La relación memoria, narrativa y temporalidad para la construcción de subjetividades colectivas no se inscribe necesariamente en el tiempo cronológico de la modernidad. Las múltiples tramas que engranan la posibilidad de una narrativa que se alimenta de la relación entre historia y ficción, permiten la enunciación de las identidades que dan cuenta de una invención del pasado, desde la constitución de un yo, que narra y que está permeado por el juego subjetivo, para dar cuenta de una experiencia que se transmite a partir del relato. Para problematizar el lugar de estas relaciones, se acude a los adelantos del trabajo de investigación con el proceso organizativo Loma Sur, que tiene como intención revisar los acumulados históricos en sus prácticas edu-comunicativas y que permite establecer estas relaciones entre distintas temporalidades y la afirmación de unas identidades constitutivas del sujeto colectivo a partir de la memoria.
La tecnología digital
Authors: Lemrini El-Ouahhabi Mohamed
Published: November 2017

El amplio mundo de las comunicaciones está inmerso en un proceso de digitalización novedoso con relación a la tecnología análoga. Es así como la información, la imagen, los sonidos y múltiples campos de la vida cotidiana, han encontrado en la tecnología digital una herramienta importante en los procesos de información. El presente texto, nos proporciona una comparación concreta entre la tecnología análoga y la digital, el sistema por el cual se rigen cada una y los diferentes componentes que hacen de éstas, instrumentos claves de información en la realidad globalizada de nuestros días.
Comunicación universal en la sociedad global
Authors: Martín Díez Mª Antonio
Published: November 2017

El objeto de este texto es rendir un pequeño homenaje a la Declaración Universal de los Derechos del Hombre. La Declaración se analiza en el contexto de sus valores principales -universalidad y democracia- y su vigencia como principio de ordenación jurídico-social. Desde el enfoque de la comunicación, se contempla el proceso comunicativo en interacción con el sistema informativo internacional. Por último se destaca la necesidad de incorporar el derecho a la comunicación conforme al planteamiento de la UNESCO. Esta necesidad se produce por el advenimiento de las nuevas tecnologías interactivas, especialmente Internet, en la sociedad global.
Digital-Mente
Authors: Cortés Fandiño Jaime E
Published: November 2017

Este artículo tiene como objetivo hacer un acercamiento al fenómeno de la imagen como forma de vida contemporánea. Será un paseo por diferentes estaciones en donde los gráficos ya sean físicos o digitales, se han convertido en elementos obligados del paisaje mediático; la Internet, la televisión, la calle, las narrativas audiovisuales y en general las formas de vida que han sido contagiadas por el virus de imagen entendido no como marca sino como una alternativa de alfabetización visual.
Una década de investigación en comunicación social y periodismo en Uniminuto : una mirada desde los trabajos de Grado
Authors: Rocha Torres César Augusto
Published: November 2017

El presente texto es un análisis sobre el proceso de investigación desarrollado por los estudiantes de Comunicación Social - Periodismo, a lo largo de una década de trabajo continúo en la Facultad de Ciencias de la Comunicación de UNIMINUTO; en él se aprecia cuáles son los enfoques utilizados, las líneas de investigación más desarrolladas y la evaluación de los proyectos en la década que este año celebramos.
Editorial
Authors: Juliao Vargas Carlos Germán
Published: November 2017

Sin resumen.
Los jóvenes peruanos en un país oral y diverso. Tensiones entre la cultura oral, la escritura y la visualidad electrónica
Authors: Quiroz María Teresa
Published: November 2017

Este texto surge a partir de la Investigación: El impacto de las tecnologías del conocimiento y la comunicación en el pensar/sentir de los jóvenes; donde se reflexiona acerca de la forma como las mayorías y los jóvenes de Perú se han incorporado y apropiado de la modernidad, sin dejar su cultura oral, ahora relacionada con una nueva visualidad: la visualidad electrónica, un hecho cultural que es similar en las diversas realidades latinoamericanas.
La radio comunitaria para la construcción de lo público: un análisis de nueve emisoras comunitarias del Huila
Authors: Moreno Elssy Yamile , Rocha César Augusto
Published: November 2017

Este documento recoge la investigación participativa desarrolla en nueve municipios del departamento del Huila, denominada Sonidos de Convivencia. En él, sus autores proponen al conflicto y a la interlocución, como posibilidades de acción colectiva y de desarrollo social y humano. En esta investigación, las emisoras comunitarias problematizaron a sus oyentes y los enfrentaron a la complejidad de un conflicto territorial en el plano de lo público, con miras a construir colectivamente redes de capital social que gestionaran dicha realidad y mejoraran la calidad de vida y la cultura política de los ciudadanos.
Comunicación y ciudad: primeras reflexiones para el desarrollo de una línea de investigación
Authors: Rizo Garcia Marta
Published: November 2017

La ciencia de la comunicación tiene, en las ciudades actuales, una multiplicidad de objetos de estudio interesantes. Este texto es resultado de un trabajo de sistematización bibliográfica en torno al objeto "ciudad", visto desde las aportaciones de la ciencia de la comunicación en sus múltiples enfoques y perspectivas teóricas. La sociología cultural es la fuente teórica más destacada en los estudios sobre la ciudad desde la comunicación, pero no la única. La labor de sistematización ha dado lugar a una serie de premisas y preguntas que pueden ayudar a ordenar y configurar una línea de investigación consistente en torno al tema "Comunicación y ciudad".
Género y medios de comunicación: más allá del sexo
Authors: Rojas Angela
Published: November 2017

En este estudio se examinó la relación de la identidad de género con la selección, interpretación y producción de consumos culturales televisivos en una muestra de jóvenes universitarios. La muestra incluyó 298 jóvenes de ambos sexos, de niveles socioeconómico bajo y medio de Bogotá. Para obtener la información se utilizó un cuestionario de auto-diligenciamiento. Los resultados mostraron que si existe relación entre los indicadores de la identidad de género examinados y la selección, interpretación y producción de consumos culturales televisivos. El presente artículo únicamente menciona los resultados que hacen referencia a las relaciones encontradas más allá del sexo de los participantes. El resto de los resultados serán objeto de un artículo posterior.
Tocar y trastocar una mirada a nuestra cultura del cuerpo
Authors: Cabra Ayala Nina Alejandra
Published: November 2017

El texto presenta los avances de investigación del proyecto Imágenes de cuerpo y sexualidad de los jóvenes bogotanos, adelantado por la carrera de Comunicación Social y Periodismo de la Universidad Central. En este avance se presenta un cruce de los hallazgos de la revisión del estado del arte y las reflexiones realizadas a la luz de la mirada arqueológica de las prácticas de cuerpo, realizada a través de la revisión de investigaciones sobre el cuerpo en la Conquista y la Colonia latinoamericanas. Este trabajo recoge , , el espíritu transdisciplinar en una conexión con algunos postulados de la física de Einstein, en tanto pregunta por el cuerpo. La reflexión sobre el cuerpo está orienta a comprender nuestras tendencias de sensibilidad, afectividad y expresión, como sujetos culturales.
Reseña
Authors: Molina Ibeth Johana
Published: November 2017

Sin  resumen.