bluuebunny/crossref_metadata_2025_split huggingface dataset:
La facilitación como un mecanismo que incrementa la diversidad vegetal en ambientes extremos
Authors: Lasso-Rivas Nilsen L. 
Published: July 2016

Tradicionalmente se consideró que las interacciones negativas entre especies de plantas eran la fuerza modeladora de la estructura y el funcionamiento de los ecosistemas, mientras las interacciones positivas eran de poca importancia en ese sentido. Dicha visión ha cambiado en las últimas décadas y actualmente se considera que las interacciones de tipo positivo, también juegan un papel importante para la estructuración y el funcionamiento de los ecosistemas. La facilitación es un tipo de interacción positiva no trófica, que se produce entre plantas fisiológicamente independientes y que está mediada a través de cambios en el entorno abiótico o a través de otros organismos. La mayor parte de la investigación realizada en el campo de la facilitación en los últimos veinte años se ha desarrollado a partir de la hipótesis del gradiente de estrés (HGE). La facilitación puede actuar directa o indirectamente a través de diferentes mecanismos. Los resultados de múltiples investigaciones, indican que la facilitación puede aumentar la diversidad de las especies vegetales en ambientes extremos, donde la presencia de una especie nodriza modifica el ambiente de manera tal, que resulta en una reducción en la frecuencia e intensidad de alguna perturbación física o estrés, permitiendo que las especies menos tolerantes puedan sobrevivir. Sin embargo, existen pocos estudios que cuantifiquen el número de especies que se agregan a una comunidad debido a la facilitación, así el reto es diseñar experimentos y estudios que permitan cuantificar la importancia relativa de la facilitación para el mantenimiento de la biodiversidad en ecosistemas extremos.
Primer registro de la diatomea Chrysanthemodiscus floriatus Mann 1925, (Chrysanthemodiscaceae) en las costas del Caribe colombiano
Authors: Vidal Luis Alfonso , Quiroga Sigmer , García-Urueña Rocío 
Published: July 2016

From the observation of micropreparations of diatoms of epiphytic habits, deposited as reference material in the collection of macroalgae Germán Bula-Meyer, from the Centro de Colecciones Biológicas de Universidad del Magdalena, we obtained the first record of the benthic diatom Chrisanthemodiscus floriatus Mann 1925, (Chrysanthemodiscaceae), to the Colombian Caribbean, in the Bay of Cinto in the Tayrona National Park , Magdalena-Colombia; its distribution known so far was in the northern hemisphere between 5 and 30°
Comparison of stepwise vs single-step advancement with the Functional Mandibular Advancer in Class II division 1 treatment
Authors: Aras Isil , Pasaoglu Aylin , Olmez Sultan , Unal Idil , Tuncer Ali Vehbi , Aras Aynur 
Published: July 2016

ABSTRACT
Objective: To compare two groups of subjects at the peak of the pubertal growth period treated with the Functional Mandibular Advancer (FMA; Forestadent, Pforzheim, Germany) appliance using either single-step or stepwise mandibular advancement.
Materials and Methods: This study was conducted on 34 Class II division 1 malocclusion subjects at or just before the peak phase of pubertal growth as assessed by hand-wrist radiographs. Subjects were assigned to two groups of mandibular advancement, using matched randomization. Both groups were treated with the FMA. While the mandible was advanced to a super Class I molar relation in the single-step advancement group (SSG), patients in the stepwise mandibular advancement group (SWG) had a 4-mm initial bite advancement and subsequent 2-mm advancements at bimonthly intervals. The material consisted of lateral cephalograms taken before treatment and after 10 months of FMA treatment. Data were analyzed by means paired t-tests and an independent t-test.
Results: There were statistically significant changes in SNB, Pg horizontal, ANB, Co-Gn, and Co-Go measurements in both groups (P &lt; .001); these changes were greater in the SWG with the exception of Co-Go (P &lt; .05). While significant differences were found in U1-SN, IMPA, L6 horizontal, overjet, and overbite appraisals in each group (P &lt; .001), these changes were comparable (P &gt; .05).
Conclusion: Because of the higher rates of sagittal mandibular skeletal changes, FMA using stepwise advancement of the mandible might be the appliance of choice for treating Class II division 1 malocclusions.
Choice of a suitable diabetes risk assessment tool in Nepal – can we learn from Canada?
Authors: Agarwal Gina , Sathian Brijesh , Agrawal Sutapa 
Published: July 2016

If the population can be made more aware about diabetes by the use of a risk assessment tool as an educational tool as well, it could help to curb the diabetes epidemic in Nepal. Education of the masses about diabetes risk factors, prevention, and complications is urgently needed, using clear and simple messages. National policy efforts can be strengthened and health outcomes improved when awareness is increased. Perhaps learning from Canada is a start, and Nepal will be able to make progress with something simple like ‘NEPAL-RISK’?
Beyond the game: the legacy of Bill Masterton
Authors: Bonfield Christopher M. , Kondziolka Douglas 
Published: July 2016

Bill Masterton is the only man to die of injuries sustained in a National Hockey League (NHL) game. He remains the last fatality in any professional team sport involving a direct in-game injury in North America. While Masterton was originally thought to have suffered a fatal brain injury while being checked on the ice, later analysis of the case revealed evidence of second-impact syndrome and the effects of prior concussions. Masterton's death sparked both an immediate debate in the NHL on whether helmets should be compulsory and the NHL's first vote on mandatory helmet use. Although the subject of mandated helmet use met with resistance in the 10 years after Masterton's death, especially from hockey owners and coaches, the NHL finally legislated helmet use by all players entering the league beginning in the 1979–1980 season.
Several awards, including one recognizing the NHL player who best exemplifies the qualities of perseverance, sportsmanship, and dedication to hockey, have been created in memory of Masterton. However, his legacy extends far beyond the awards that bear his name. His death was the seminal event bringing head safety to the forefront of a game that was both unready and unwilling to accept change. An increase in mainstream media attention in recent years has led to unprecedented public awareness of brain injury and concussion in hockey and other sports. Advances in the diagnosis and treatment of head injury in sports have occurred recently, the impetus for which started over 45 years ago, when Bill Masterton died.
Minimally invasive transforaminal lumbar interbody fusion with percutaneous navigated guidewireless lumbosacral pedicle screw fixation
Authors: Chen Kevin S. , Park Paul 
Published: July 2016

This video details the minimally invasive approach for treatment of a symptomatic Grade II lytic spondylolisthesis with high-grade foraminal stenosis. In this procedure, the use of a navigated, guidewireless technique for percutaneous pedicle screw placement at the lumbosacral junction is highlighted following initial decompression and transforaminal interbody fusion. Key steps of the procedure are delineated that include positioning, exposure, technique for interbody fusion, intraoperative image acquisition, and use of a concise 2-step process for navigated screw placement without using guidewires.The video can be found here: https://youtu.be/2u6H4Pc_8To.
Minimally invasive L5–S1 oblique lumbar interbody fusion with anterior plate
Authors: Pham Martin H. , Jakoi Andre M. , Hsieh Patrick C. 
Published: July 2016

Lumbar interbody fusion is an important technique for the treatment of degenerative disc disease and degenerative scoliosis. The oblique lumbar interbody fusion (OLIF) establishes a minimally invasive retroperitoneal exposure anterior to the psoas and lumbar plexus. In this video case presentation, the authors demonstrate the techniques of the OLIF at L5–S1 performed on a 69-year-old female with degenerative scoliosis as one component of an overall strategy for her deformity correction.The video can be found here: https://youtu.be/VMUYWKLAl0g.
Minimally invasive transforaminal lumbosacral interbody fusion
Authors: Chang Peng-Yuan , Wang Michael Y. 
Published: July 2016

In minimally invasive spinal fusion surgery, transforaminal lumbar (sacral) interbody fusion (TLIF) is one of the most common procedures that provides both anterior and posterior column support without retraction or violation to the neural structure. Direct and indirect decompression can be done through this single approach. Preoperative plain radiographs and MR scan should be carefully evaluated. This video demonstrates a standard approach for how to perform a minimally invasive transforaminal lumbosacral interbody fusion.The video can be found here: https://youtu.be/bhEeafKJ370.
Introduction to Lumbosacral and Sacropelvic Fixation Strategies
Authors: Hsieh Patrick C. , Mummaneni Praveen V. 
Published: July 2016

We are pleased to present this Neurosurgical Focus video supplement on lumbosacral and sacropelvic fixation strategies. Despite advancement in surgical techniques and technologies in spine, achieving consistent solid fusion across the lumbosacral junction remains a major challenge. The anatomy of the lumbosacral junction allows for a higher range of motion compared to other areas of the thoracolumbar spine. The L5-S1 interspace is exposed to significant shear forces. As a result, complications such as pseudoarthrosis, screw pull-out, implant fracture, or sacral fractures can occur. Complications are particularly seen in long fusion constructs ending across the lumbosacral junction. To reduce these complications, various lumbosacral and sacropelvic fixation techniques have been developed and utilized.The current supplement is intended to provide instructional videos that illustrate several current techniques for lumbosacral and sacropelvic fixation. The collection includes techniques for anterior L5-S1 interbody fusion, minimally invasive L5-S1 interbody fusions, lumbosacral pedicle screw placement, sacroiliac fusion, and sacro-alar-iliac screw placement. The authors of the videos in the supplement have provided detailed narration and video illustration to describe the nuances of the various open and minimally invasive techniques for lumbosacral and sacral-pelvic fixation. We are pleased to have such a collection of quality video illustration from experts in the field. It's been our privilege to serve as guest editors for this supplement and we believe that you will enjoy the contents of this supplement.
Outcome after conservative management or surgical treatment for new-onset epilepsy in cerebral cavernous malformation
Authors: Dammann Philipp , Wrede Karsten , Jabbarli Ramazan , Neuschulte Salome , Menzler Katja , Zhu Yuan , Özkan Neriman , Müller Oliver , Forsting Michael , Rosenow Felix , Sure Ulrich 
Published: July 2016

OBJECTIVE
The aim of this study was to determine seizure outcome, functional outcome, and the withdrawal of antiepileptic drugs (AEDs) after conservative or surgical treatment of patients with new-onset cavernoma-related epilepsy (CRE).

METHODS
The authors conducted a retrospective comparative observational study of 79 consecutive patients, each with a single sporadic cerebral cavernous malformation (CCM) and new-onset CRE.

RESULTS
Forty-one patients underwent initial surgery (IS), and 38 patients underwent initial conservative (IC) treatment. Of those in the latter group, 19 underwent delayed surgical (DS) treatment. At the last follow-up, 88%, 32%, and 79% of patients in the respective groups had been seizure free for at least 2 years (International League Against Epilepsy [ILAE] Class 1; IS vs IC, p < 0.0001) and 78%, 8%, and 58%, respectively, had been off AEDs (IS vs IC, p < 0.0001). The cumulative probability of staying seizure free (ILAE Class 1) during a 5-year period was 73% (mean seizure-free follow-up 49.8 ± 2.7 months, 95% CI 44.4–55.1 months) for the IS group, 22% (mean 31.8 ± 3.6 months, 95% CI 24.8–38.8 months) for the IC group, and 68% (mean 48.6 ± 4.3 months, 95% CI 40.1–57.1 months) for the DS group (IS vs IC p < 0.001). Long-term operative morbidity was 3%, and long-term morbidity in the conservatively treated group was also 3%.

CONCLUSIONS
Patients with CCM and new-onset CRE who underwent IS treatment showed better results in seizure control and the discontinuation of AEDs than the conservatively treated patients. Operative morbidity was comparable to the morbidity from symptomatic CCM hemorrhage in the conservative group. Half of the patients who started with conservative treatment underwent subsequent surgical treatment; however, a longer duration of epilepsy prior to surgery did not worsen postoperative seizure outcome.
Three-dimensional models: an emerging investigational revolution for craniovertebral junction surgery
Authors: Goel Atul , Jankharia Bhavin , Shah Abhidha , Sathe Prashant 
Published: July 2016

Complex craniovertebral junctional anomalies can be daunting to treat surgically, and preoperative information regarding the osseous abnormalities, course of the vertebral arteries, size of the pedicles, and location of the transverse foramina is invaluable to surgeons operating on these challenging cases. The authors present their experience with the emerging technology of 3D model acquisition for surgery in 11 cases of complex craniovertebral junction region anomalies.
For each case, a 3D printed model was made from thin CT scans using a 64-slice CT scanner. The inclination of the joints, the presence of false articulations, the size of the pedicles, and the course of the vertebral arteries were studied preoperatively on the 3D models. The sizes of the plates and screws to be used and the angle of insertion of the screws were calculated based on the data from the models. The model was scaled to actual size and was kept beside the operating surgeon in its anatomical position during surgery. The potential uses of the models and their advantages over conventional radiological investigations are discussed.
The authors conclude that 3D models can be an invaluable aid during surgery for complex craniovertebral junction anomalies. The information available from a real life-size model supersedes the information available from 3D CT reconstructions and can also be superior to virtual simulation. The models are both cost effective and easy to build and the authors suggest that they may form the basis of investigations in the near future for craniovertebral junction surgery.
Ovarian function suppression is beneficial in some premenopausal women with early breast cancer
Authors: Barton Mary Kay 
Published: July 2016

Key Points

Premenopausal women with HR‐positive early breast cancer benefit from exemestane plus OFS versus tamoxifen with or without OFS.
Results of SOFT and TEXT support the addition of OFS to exemestane or tamoxifen in premenopausal women whose risk of recurrence warrants (neo)adjuvant chemotherapy.
Women with low‐risk early breast cancer derive minimal benefit from the addition of OFS.
RY AQUARIUS A BINARY SYSTEM WITH PULSATING δ-SCUTI PRIMARY COMPONENT
Authors: Manzoori Davood , Salar Abbasvand 
Published: July 2016

ABSTRACT
We present simultaneous new BVI light curves along with radial velocity curve analysis of the RY Aqr system, using the PHysics Of Eclipsing BinariEs code. The analysis indicates that while the primary is completely inside its Roche critical surface, the secondary has filled out its Roche surface. In addition, the positions of the system components on M–R, H–R diagrams are specified, which show that the primary is a main-sequence or nearly main-sequence star while the secondary is an evolved subgiant. In addition, analysis of the period and luminosity variations of the system were carried out. Fourier frequency analysis of light variation indicates that the primary is a pulsating, δ-scuti variable star. Moreover, O–C curve analysis shows that the period of the system is secularly decreasing with a rate of dp/dt = 0.074 s yr−1. This decrease in the orbital period variations was attributed to a mass and angular momentum loss from the system with a rate of

Apart from the secular period decreases, the orbital period of the system is modulated by a cyclic period of 72.69 year, which was attributed to a third body orbiting around the barycenter of the system.
MARKOV PROPERTIES OF THE MAGNETIC FIELD IN THE QUIET SOLAR PHOTOSPHERE
Authors: Gorobets A. Y. , Borrero J. M. , Berdyugina S. 
Published: July 2016

ABSTRACT
The observed magnetic field on the solar surface is characterized by a very complex spatial and temporal behavior. Although feature-tracking algorithms have allowed us to deepen our understanding of this behavior, subjectivity plays an important role in the identification and tracking of such features. In this paper, we study the temporal stochasticity of the magnetic field on the solar surface without relying on either the concept of magnetic feature or on the subjective assumptions about their identification and interaction. The analysis is applied to observations of the magnetic field of the quiet solar photosphere carried out with the Imaging Magnetograph eXperiment (IMaX) instrument on board the stratospheric balloon, Sunrise. We show that the joint probability distribution functions of the longitudinal (

) and transverse (

) components of the magnetic field, as well as of the magnetic pressure (

), verify the necessary and sufficient condition for the Markov chains. Therefore, we establish that the magnetic field as seen by IMaX with a resolution of 0.″15–0.″18 and 33 s cadence, which can be considered as a memoryless temporal fluctuating quantity.
Living with Dying in the Pediatric Intensive Care Unit: A Nursing Perspective
Authors: Stayer Debbie , Lockhart Joan Such 
Published: July 2016

BackgroundDespite reported challenges encountered by nurses who provide palliative care to children, few researchers have examined this phenomenon from the perspective of nurses who care for children with life-threatening illnesses in pediatric intensive care units.ObjectivesTo describe and interpret the essence of the experiences of nurses in pediatric intensive care units who provide palliative care to children with life-threatening illnesses and the children’s families.MethodsA hermeneutic phenomenological study was conducted with 12 pediatric intensive care unit nurses in the northeastern United States. Face-to-face interviews and field notes were used to illuminate the experiences.ResultsFive major themes were detected: journey to death; a lifelong burden; and challenges delivering care, maintaining self, and crossing boundaries. These themes were illuminated by 12 subthemes: the emotional impact of the dying child, the emotional impact of the child’s death, concurrent grieving, creating a peaceful ending, parental burden of care, maintaining hope for the family, pain, unclear communication by physicians, need to hear the voice of the child, remaining respectful of parental wishes, collegial camaraderie and support, and personal support.ConclusionProviding palliative care to children with life-threatening illnesses was complex for the nurses. Findings revealed sometimes challenging intricacies involved in caring for dying children and the children’s families. However, the nurses voiced professional satisfaction in providing palliative care and in support from colleagues. Although the nurses reported collegial camaraderie, future research is needed to identify additional supportive resources that may help staff process and cope with death and dying.
Efeito da fonte de carbono na embriogênese somática em Bactris gasipaes
Authors: Bettencourt Gisela Manuela de França , Zanella Laudiane Bruna , Quoirin Marguerite Germaine Ghislaine , Degenhardt-Goldbach Juliana 
Published: July 2016

A metodologia de camada fina de células foi utilizada com sucesso para indução de embriogênese somática em região do meristema apical de plantas de pupunha mantidas em casa-de-vegetação. O efeito de três fontes de carbono: sacarose, glicose e manitol na indução de embriogênese somática foi avaliado. Embriões somáticos foram observados após a indução apenas nos meios contendo sacarose ou glicose em igual proporção.Effect of carbon source on somatic embryogenesis of Bactris gasipaesThin cell layer of meristematic region was successfully used to induce somatic embryogenesis in greenhouse-grown plants of pejibaye. The effects of three sources of carbohydrates, sucrose, glucose and mannitol on induction of somatic embryogenic calli were evaluated. Somatic embryos were observed on media containing either sucrose or glucose.Index terms: Thin cell layer, Glucose, Sucrose
Reforma Curricular, una oportunidad para repensar el Trabajo Social
Authors: Duarte Hidalgo C. , Mora Castillo A. 
Published: July 2016

<p>El artículo expone la experiencia de renovación curricular en educación superior, basada en cuatro ejes: enfoque basado en competencias, sistema de créditos transferibles, pensamiento crítico y modelo constructivista. Estos ejes se articulan a la luz de los cambios en la formación en trabajo social, la cual se encuentra marcada por dos elementos: un desarrollo histórico particular, marcado por los contextos sociopolíticos, y por parámetros de aseguramiento de la calidad en la educación, los que constituyen la política educativa actual.</p><p>El proceso de renovación curricular, desarrollado en conjunto con los y las estudiantes, permitió reflexionar sobre cuestiones como identidad profesional, pertinencia y particularidad de la formación en el contexto regional, desafíos disciplinares locales, entre otros temas.</p><p>El trabajo revisa el proceso realizado, sistematizado la experiencia con especial énfasis en la formación en trabajo social, fijando la mirada en las formas desde las regiones se enfrentan los diversos y complejos desafíos presentes en educación superior.</p><p>La reflexión sobre una renovación curricular situada y crítica se plantea como un proceso permanente que impacta no sólo en el entorno inmediato, sino también en la construcción conjunta de un proyecto formativo en trabajo social que tenga un correlato con las apuestas éticas y políticas que desarrolla la disciplina, asumiendo el desafío de formar a quienes luchan por las transformaciones necesarias para lograr las mejorías en la región. </p>
Entrevista a Ana Lucía Frega: educar por medio de experiencias que estimulen la creatividad
Authors: García Sempere Pablo , Tejada Romero Pablo Luis 
Published: July 2016

En la entrevista, partiendo de su larga experiencia como docente en diferentes niveles educativos, dirección de instituciones de formación artística y múltiples investigaciones, Ana Lucía Frega aborda diferentes cuestiones relacionadas con la creatividad y la formación artística actual. Uno de los grandes cambios en la educación artística radica en la enseñanza y aprendizaje de la técnica; una nueva concepción de aprendizaje de la misma, desde la motivación y el sentimiento de utilidad. Preocupada por el baño de estereotipos que sufren los niños y jóvenes, incide en la necesidad de conseguir que la espontaneidad que manifiestan se mantenga flexible a través de una acción educativa sistemática. Además, resalta la importancia de generar en las escuelas una estimulación de la búsqueda, de la fluidez, del procesamiento de ideas y especialmente incidir en la elección descartando con fundamento. Igualmente, la educación artística debe contemplar la diversidad de sentimientos y emociones así como su manifestación y construcción simbólica.