bluuebunny/crossref_metadata_2025_split huggingface dataset:
Applicability of soil column incubation experiments to measure CO2 efflux
Authors: Guo Linlin , Nishimura Taku , Imoto Hiromi , Sun Zhigang 
Published: November 2015

Abstract
Accurate measurements of CO2 efflux from soils are essential to understand dynamic changes in soil carbon storage. Column incubation experiments are commonly used to study soil water and solute transport; however, the use of column incubation experiments to study soil CO2 efflux has seldom been reported. In this study, a 150-day greenhouse experiment with two treatments (no-tillage and tillage soils) was conducted to evaluate the applicability of soil column incubation experiments to study CO2 efflux. Both the chamber measurement and the gradient method were used, and results from the two methods were consistent: tillage increased soil cumulative CO2 efflux during the incubation period. Compared with fieldwork, incubation experiments can create or precisely control experimental conditions and thus have advantages for investigating the influence of climate factors or human activities on CO2 efflux. They are superior to bottle incubation because soil column experiments maintain a soil structure that is almost the same as that in the field, and thus can facilitate analyses on CO2 behaviour in the soil profile and more accurate evaluations of CO2 efflux. Although some improvements are still required for column incubation experiments, wider application of this method to study soil CO2 behaviour is expected.
Morpho-anatomical traits of two lowest internodes related to lodging resistance in selected genotypes of Triticum
Authors: Packa Danuta , Wiwart Marian , Suchowilska Elżbieta , Bieńkowska Teresa 
Published: November 2015

Abstract
The cross-sections of first and second internodes were analyzed under a light and fluorescence microscopes in six varieties of Triticum spelta, two varieties of T. polonicum, and one variety of T. aestivum. The morphometric parameters of stem cross-sections were measured. The analyzed wheats were characterized by significant differences in traits associated with lodging resistance ie: internode diameter, lumen diameter, stem wall thickness, mechanical layer thickness, area of transverse section, and area of lumen for the first and second internode and between the internodes. In all varieties, the values of internode diameter, lumen diameter, area of transverse section and area of lumen were higher for the second internode than for the first internode, whereas the reverse was reported for stem wall thickness and mechanical layer thickness The results of the principal component analysis and section modulus values revealed similarities between spring spelt Wirtas and Rubinas and between common wheat Kontesa and winter spelt Poeme and Epanis. The number of large vascular bundles varied across the studied varieties. The average number of vascular bundles in common wheat Kontesa was significantly higher than in spring spelt Rubinas and Wirtas and significantly lower than in Polish wheat Pol-3 and winter spelt Epanis and Poeme.
Impact of maternal age on delivery outcomes following spontaneous labour at term
Authors: Omih Edwin Eseoghene , Lindow Stephen 
Published: November 2015

AbstractAim:Pregnancy in women of advancing maternal age is linked to incrementally worsening perinatal outcome. The aim of this study is to assess the impact of maternal age on delivery outcome in women that spontaneously labour at term.Methods:This was a retrospective study of women that spontaneously labour at term. Women with singletons in spontaneous onset labour beyond 37 weeks of gestation were divided into five maternal age groups: <19 years, 20–24 years, 25–29 years, 30–34 years and >35 years by their age at delivery. The main outcome variables are augmentation of labour, caesarean section, assisted vaginal delivery, and perineal trauma, while admission of the newborn into the neonatal unit within 24 h following delivery was the secondary outcome measure.Results:A total of 30,022 met the inclusion criteria with primiparae and multiparae accounting for 46 and 54%, respectively. Increasing age in primiparae was associated with; augmentation of labour OR 2.05 (95% CI 1.73–2.43), second degree perineal tear 1.35 (1.12–1.61), assisted vaginal delivery 1.92 (1.53–2.41) and caesarean section 4.23 (3.19–5.12). While that for multiparae; augmentation of labour OR 1.93 (1.05–3.52), perineal trauma 2.50 (1.85–3.34), assisted vaginal delivery 4.95 (91.82–13.35) and caesarean section 1.64 (1.13–2.38). The secondary outcome measure did not reach statistical significance.Conclusion:Increasing maternal age is an independent risk factor for operative delivery, and perineal trauma. However, maternal age has no significant effect on admission of infants into the NICU during the first 24 h following delivery.
Intertwin estimated fetal weight or crown rump length discordance and adverse perinatal outcome
Authors: Kaponis Apostolos , Thanatsis Nikolaos , Papadopoulos Vassilis , Decavalas George 
Published: November 2015

Abstract

Aim:
In the current review study, we present recent data regarding the importance of intertwin estimated fetal weight (EFW) and crown rump length (CRL) discordance for the prediction of adverse perinatal outcome both in monochorionic and in dichorionic diamniotic gestations.

Results:
Twins with significant weight disparity are associated with higher rates of perinatal morbidity and mortality, regardless of gestational age at delivery. However, there is no agreement regarding as to the cut off value above which the perinatal outcome is unfavorably affected and the threshold range from 10 to 30%. On the other hand, CRL discrepancy has proved to be a weak predictor of adverse outcomes, such as fetal or neonatal death in fetuses without chromosomal and structural abnormalities. In clinical practice, decisions about obstetric surveillance of discordant twin gestations, frequency of fetal sonographic monitoring and time of delivery are usually based on amniotic fluid volume and Doppler assessments on a weekly basis.

Conclusion:
Significant EFW discordance leads to adverse perinatal outcome, although the cut-off value has not yet been estimated. CRL discrepancy is not correlated well with adverse perinatal outcome. However, increased monitoring of women with EFW and CRL discrepancy is suggested.
Geographic distribution of the European hare (Lepus europaeus) in Brazil and new records of occurrence for the Cerrado and Atlantic Forest biomes
Authors: de Faria Gabriel Messias Moura , Rosa Clarissa Alves , Castro Corrêa Guilherme Leandro , Puertas Fernando , Olarte Jiménez Karem Manuelita , Perillo Lucas Neves , Hufnagel Ludmila , Leles Bruno , de Paula Rogério Cunha , Guimarães Rodrigues Flávio Henrique , Passamani Marcelo 
Published: November 2015

AbstractThe introduction of alien species is among the main causes of biodiversity loss. There are many documented cases of introduced mammals having severe impacts on the ecosystem. The European hare (
Modification of chemical, optical and structural properties of Bayfol CR-6-2 using gamma and neutron irradiation
Authors: Shehata Mohamed M. , Waly Sayed A. , Radwan Samh I. , Badawy Zaynab M. , Hassan Amin 
Published: November 2015

Abstract
The effects of gamma and neutron irradiations on the chemical, optical and structural properties of Bayfol CR-6-2 were
investigated. The samples were irradiated by γ-rays from a 60Co source at various doses ranging between 16 and
900 kGy at room temperature in atmospheric air. For neutrons, an Am-Be neutron facility was used for the sample irradiation
in thermal mode which had an activity of 185 GBq. Samples were irradiated with different doses of neutrons ranging from
15.7 to 564.2 mGy. The changes induced were analyzed using UV-Vis and Fourier transform infrared (FTIR) spectrometry. The
results demonstrated an occurrence of oxidative degradation, resulting in the formation of carbonyl groups at
1700 cm
–1. Simultaneous thermo-gravimetric investigation (TGA) has been performed on the samples of 0.3 mm
thickness. The results obtained indicate that cross-linking predominates at small neutron doses and main chain scission happens at
higher doses.
The functional role of all postsynaptic potentials examined from a first-person frame of reference
Authors: Vadakkan Kunjumon I. 
Published: November 2015

AbstractWhen assigning a central role to the neuronal firing, a large number of incoming postsynaptic potentials not utilized during both supra- and subthreshold neuronal activations are not given any functional significance. Local synaptic potentials at the apical dendrites get attenuated as they arrive at the soma to nearly a twentieth of what a synapse proximal to the soma produces. Conservation of these functions necessitates searching for their functional roles. Potentials induced at the postsynapses of neurons of all the neuronal orders activated by sensory inputs carry small bits of sensory information. The activation of these postsynapses by any means other than the activation from their corresponding presynaptic terminals, that also contribute to oscillating potentials, induce the semblance of the arrival of activity from their presynaptic terminals. This is a candidate mechanism for inducing the first-person internal sensory elements of various higher brain functions as a systems property. They also contribute to the firing of subthreshold-activated neurons, including motor neurons. Operational mechanism of inter-postsynaptic functional LINKs can provide necessary structural requirements for these functions. The functional independence of the distal dendritic compartment and recent evidence for in vivo dendritic spikes indicate their independent role in the formation of internal sensory elements. In these contexts, a neuronal soma is flanked by a large number of quasi-functional internal sensory processing units operated using very little energy, even when a neuron is not firing. A large number of possible combinations of internal sensory units explains the corresponding number of specific memory retrievals by the system in response to various cue stimuli.
Numerical Study of the Propulsive Performance of the Hollow Rotating Detonation Engine with a Laval Nozzle
Authors: Yao Songbai , Tang Xinmeng , Wang Jianping 
Published: November 2015

AbstractThe aim of the present paper is to investigate the propulsive performance of the hollow rotating detonation engine (RDE) with a Laval nozzle. Three-dimensional simulations are carried out with a one-step Arrhenius chemistry model. The Laval nozzle is found to improve the propulsive performance of hollow RDE in all respects. The thrust and fuel-based specific impulse are increased up to 12.60 kN and 7484.40 s, respectively, from 6.46 kN and 6720.48 s. Meanwhile, the total mass flow rate increases from 3.63 kg/s to 6.68 kg/s. Overall, the Laval nozzle significantly improves the propulsive performance of the hollow RDE and makes it a promising model among detonation engines.
Hydrofluoric Acid – Simple Things You May Do Not Know About Something You Are So Habituated To Use
Authors: Carpena Guilherme , Ballarin Adressa 
Published: November 2015

<p>Hydrofluoric Acid (HF) acid usually is used to etch the internal surface of the ceramic restoration. This acid increases surface relief in micromechanical bonding of resin cement to ceramic restoration Pre-treatment conditioning with HF in feldspathic ceramic and leucita reinforced glass-ceramic will result in an internal surface with white-opaque appearance. In this brief new perspective article we would discuss some important issues regarding HF use in dentistry.</p>
Mediciones y análisis de vibraciones en el puente Virilla, ruta nacional N° 1
Authors: Navarro-Henríquez Francisco , Ureña-Muñoz Daniel 
Published: November 2015

<p class="p1">Este artículo presenta la experiencia generada durante la inspección detallada de la superestructura del puente Virilla, ruta nacional N° 1, como parte del proyecto de investigación <em>eBridge 2.0: sistema integrado para el desempeño de puentes </em>y a solicitud del Consejo Nacional de Vialidad (CONAVI), con base en el Contrato interadministrativo entre el CONAVI y el Tecnológico de Costa Rica (TEC). </p><p class="p1">En este trabajo se realiza una descripción general del puente en estudio, así como una inspección inicial de la estructura y se dispone de un modelo analítico del puente para el análisis estructural. </p><p class="p1">Las mediciones realizadas permitieron cuantificar las magnitudes vibratorias y la deformación en varias secciones del puente, en condición de tránsito vehicular en servicio (comportamiento ambiental). Los resultados experimentales obtenidos se comparan con el modelado analítico computacional de la estructura y este a su vez con normas nacionales e internacionales. </p>
Aislamiento de una bacteria endófita de vainilla (Vanilla planifolia) con actividad biocontroladora in vitro contra Fusarium oxysporum f. sp. Vanillae
Authors: Jiménez-Quesada Karol , Schmidt-Durán Alexander , Quesada-Montero Kevin , Moreira-González Ileana 
Published: November 2015

<p class="p1">El género <em>Vanilla </em>pertenece a la familia Orchidaceae. Algunas de sus especies con interés comercial son <em>V. planifolia</em>, <em>V. pompona </em>y <em>V. tahitensis</em>. La clasificación de la calidad de la vainilla se efectúa según el largo de la cápsula y el contenido de vainillina, la cual se utiliza para elaborar alimentos y bebidas, como materia prima en la industria farmacéutica y en la producción de cosméticos y perfumes, entre otros usos. Se considera que el mayor problema que enfrenta la producción de vainilla es la pudrición de la raíz ocasionada por el hongo <em>Fusarium oxyporum </em>f. sp. Vanillae, que provoca entre 30-52% de la muerte de las plantas al atacar las raíces adventicias, impidiéndoles absorber agua y nutrientes. El hongo no puede erradicarse por la acción de agroquímicos ya que dañan la viabilidad de las plantas; además, el cultivo de vainilla sin la aplicación de agroquímicos de manera orgánica en sistemas agroforestales es una actividad que está cobrando gran interés entre los pequeños productores del país. Es por tal razón que en esta investigación se evaluó la capacidad de control de bacterias endófitas aisladas de muestras de vainilla procedentes de Corcovado, Puriscal, Dota y Guápiles, mediante pruebas de antagonismo in vitro entre la bacterias aisladasy el hongo <em>F. oxysporum</em>. El resultado es que la cepa bacteriana B1M11 es una candidata promisoria para responder al ataque del patógeno<em>, </em>lo que se corroboró con la aparición de un halo de inhibición del crecimiento del hongo en placa. </p>
Geovisión: una infraestructura abierta de datos espaciales
Authors: Campos-Vargas Carlos A. , Mora-Zamora Rodolfo , Segura-Castillo Andrés 
Published: November 2015

<p class="p1">La Universidad Estatal a Distancia (UNED) ha buscado recientemente incorporar el uso de información georeferenciada como una buena práctica en su quehacer investigativo. Para ello se dió a la tarea de implementar una Infraestructura de Datos Espaciales (IDE) Abierta denominada Geovisión. Se presenta el proceso y los resultados de su desarrollo, desde la conformación inicial de una red de suministradores y usuarios de geoinformación, hasta la habilitación y publicación de servicios de geoinformación en línea. Geovisión se concibe como una IDE abierta tanto en términos de participación, ya que no es necesario pertenecer a la UNED para acceder a la IDE, como en el uso de plataformas de <em>software </em>y protocolos abiertos que facilitan las herramientas necesarias para publicar y compartir información espacial en un formato amigable para usuarios sin experiencia a nivel técnico, así como en formatos más complejos para usuarios especializados. </p>
Síntesis de nanopartículas magnéticas de óxido de hierro para la remoción de arsénico del agua de consumo humano
Authors: Starbird-Pérez Ricardo , Montero-Campos Virginia 
Published: November 2015

<p class="p1">El objetivo de este estudio consiste en proveer un material de alta área de contacto, para ser empleado en el tratamiento de aguas contaminadas con arsénico. Se reporta la síntesis de nanopartículas de hierro con propiedades superparamagnéticas, estabilizadas con ácido esteárico, así como su respectiva caracterización a través de técnicas espectrofotométricas, termogravimétricas y trasmisión electrónica, siendo evidente que la presencia de un emulsificante es determinante para la estabilización de la fase del óxido de hierro (maghemita o magnetita) con propiedades magnéticas. El material obtenido muestra adecuadas propiedades para ser utilizado en el tratamiento de agua de consumo humano. </p>
High Glucose Concentrations Suppress the Proliferation of Human Periodontal Ligament Stem Cells and Their Differentiation Into Osteoblasts
Authors: Kato Hirohito , Taguchi Yoichiro , Tominaga Kazuya , Kimura Daisuke , Yamawaki Isao , Noguchi Masahiro , Yamauchi Nobuhiro , Tamura Isao , Tanaka Akio , Umeda Makoto 
Published: November 2015

Background: Diabetes mellitus (DM) is a major risk factor for periodontal disease and affects various cellular functions. Periodontal ligament stem cells (PDLSCs) play an important role in periodontal tissue regeneration; however, the effect of hyperglycemia on PDLSCs is unclear. The aim of this study is to investigate whether hyperglycemia affects periodontal tissue regeneration, using human PDLSCs and high‐glucose medium as a model of DM.Methods: PDLSCs were obtained from healthy adult human mandibular third molars. Cell proliferation, osteoblastic differentiation, and proinflammatory cytokine expression were investigated by culturing PDLSCs in media supplemented with four different glucose concentrations representative of control patients (5.5 mM), patients with postprandial or controlled DM (8.0 mM), and patients with uncontrolled DM (12.0 and 24.0 mM). The molecular effects of hyperglycemia on PDLSC physiology were examined with a focus on the nuclear factor (NF)‐(κB signaling pathway. The involvement of NF‐κB was investigated with a specific NF‐κB inhibitor in PDLSCs under hyperglycemic conditions.Results: High glucose levels inhibited PDLSC proliferation and differentiation into osteoblasts but induced NF‐κB activation and subsequent interleukin (IL)‐6 and IL‐8 expression. Treatment with an NF‐κB inhibitor rescued the defects in cell proliferation and osteoblastic differentiation and inhibited the IL‐6 expression caused by the high‐glucose environment.Conclusion: The results of this study demonstrate that hyperglycemia inhibits human PDLSC proliferation and osteoblastic differentiation.
Structural Integrity Management of ADMA OPCO Critical Wellhead Conductors
Authors: Al Sayed Talal , Alshehhi Ebrahim S. , Al Hammadi Hassan , Al Shehhi Saif , Terchoun Slimane , AL Dhanhani Khalfan , Tayel Mohamed , Maleki Shervin , Jamshidi Payam , Gray Malcolm 
Published: November 2015

Abstract
The Abu Dhabi Marine Operating Company (ADMA-OPCO) is a major producer of oil and gas from the offshore areas of the Emirate of Abu Dhabi. It is Operating on behalf of Shareholders ADNOC, BP and TOTAL & JODCO, having completed over 50 years of oil and gas production.
ADMA OPCO is currently producing over 650 MBD from two main off shore fields, Umm Shaif and Zakum, through over 560 Offshore Well Conductors. Also, ADMA OPCO is expanding to produce 1000 MBD by 2020 once the new 3 fields (Umm Lulu, SARB & Nasr) are on line. The Magnitude of the well conductors will increase to over 600.
Production assurance integrity review has dictated to ADMA OPCO to check all the assets integrity from the reservoir to the loading terminal. This has captured all the gaps and one of this was integrity assurance of the Well conductor. This had ADMA OPCO to review the inspection Methodology and assessment in order to have a comprehensive integrity assumption and a quantitative approach of recommendation.
Evaluating four –variable screening tool in european population of a sleep clinic for assessing obstructive sleep apnea syndrome
Authors: Pataka Athanasia , Kotoulas Seraphim , Sourla Evdokia , Akritidou Sofia , Panagiotidou Evangelia , Kalamaras George , Fekete Katalin , Argyropoulou Paraskevi 
Published: November 2015

Background: Different questionnaires have been used to evaluate patients with Obstructive sleep apnea/hypopnea syndrome (OSAHS). The 4-Variable screening tool (4-V) was developed and validated in Asian population for identifying moderate to severe OSAHS.Aims and Objectives: To evaluate the ability of 4-V to identify patients at high risk for OSAHS in a European Population visiting a Sleep Clinic. Methods: 1057 (73.8% males), 52±14 years, BMI 33±7kg/m2, Epworth Sleepiness Scale (ESS) 11.5±5.4 and Apnea Hypopnea Index (AHI) 32.7±26.5 were included. All patients had an in laboratory sleep study and 4-V was calculated.Results: The mean 4-V score was 13.3±2.5. Sensitivities of 4-V≥11 for AHI ≥5, ≥15 and ≥30 were 78%, 79% and 81%, respectively; specificities 40.8%, 36%, 32%; positive predictive values (PPV) 84.3%, 71%, 52%; negative predictive values (NPV) 31% , 46.5%, 65% and area under the ROC curve at AHI≥ 15 was 0.58. For 4-V ≥14, sensitivities for AHI ≥5, ≥15 and ≥30 were 50.7%, 55% and 61%, respectively; specificities 78%, 74.4%, 69%; PPV 90.3%, 81%, 64%; NPV 27.9%, 45%, 66% and area under the ROC curve at AHI≥ 15 was 0.68. The 4-V differed significantly between no and mild and between moderate and severe OSAHS, but not between mild and moderate OSAHS in both genders. Sensitivity was better in men, but specificity was higher in women.Conclusion: In Caucasians the 4-V≥14 had low sensitivity and NPV, rather good specificity and PPV. For a cut-off ≥11, sensitivity was better but specificity was low. However the predictive values differed between genders. Asian Journal of Medical Sciences Vol.7(2) 2015 21-27
La psychanalyse en Argentine : histoire et perspectives
Authors: Dagfal Alejandro 
Published: November 2015

Cet article essaie de rendre compte de la spécificité de la situation actuelle de la psychanalyse en Argentine à partir d’une étude historique de 1910 à nos jours. Il s’agit de parcourir les différentes étapes de l’histoire de la psychanalyse dans ce pays sud-américain dans le but de comprendre le processus par lequel l’Argentine est devenue une sorte de capitale internationale d’abord pour le freudisme, puis pour le kleinisme et, finalement, aussi pour le lacanisme. Ce récit, au-delà d’une histoire interne, tente de restituer le contexte sociopolitique et culturel. De la même façon, l’auteur cherche à comprendre les rapports entre la psychanalyse et les autres disciplines « psy », notamment la psychologie, dont l’essor au Río de la Plata facilita l’implantation et la diffusion des idées et des pratiques freudiennes.