bluuebunny/crossref_metadata_2025_split huggingface dataset:
Relationship between dissolved organic carbon and calcium and magnesium in soil water phase and their uptake by meadow vegetation / Zależność miedzy rozpuszczalnym węglem organicznym (RWO) w fazie wodnej gleby a stężeniem w niej wapnia i magnezu oraz ich pobraniem z plonem roślinności łąkowej
Authors: Sapek Barbara 
Published: January 2014

Abstract
Studies on the effect of dissolved organic carbon (DOC) on the concentration of calcium and magnesium in soil water phase (ground water and soil solution) and on their uptake by plants are less numerous than those on nitrogen and phosphorus. This study was aimed at assessing the relationships between DOC in ground water and soil solution from under meadow on mineral soil and Ca and Mg concentrations and their uptake by plants. Presented studies were performed in the years 2004-2007 on long-term meadow experiments situated in Janki and Laszczki in Masovian Province. Increasing DOC concentrations in soil solutions increased Ca uptake and decreased Mg uptake by plants which was facilitated by decreasing soil acidity. A lack of significant effect of DOC concentration in ground water on Ca and Mg uptake but demonstrated opposite direction of this effect confirms the antagonism in calcium and magnesium behaviour in the environment. Obtained results indicate that mutual relationships among DOC, Ca and Mg in a ground water - soil solution - meadow vegetation system is complex and needs further studies.
Floristic diversity of selected plant communities on extensive and abandoned grasslands in the Nadwieprzański Landscape Park / Zróżnicowanie florystyczne wybranych zbiorowisk roślinnych ekstensywnych użytków zielonych w Nadwieprzańskim Parku Krajobrazowym
Authors: Warda Marianna , Stamirowska-Krzaczek Ewa , Kulik Mariusz 
Published: January 2014

Abstract
The paper presents floristic diversity of some plant communities in the Nadwieprzański Landscape Park (middle part of the Wieprz River valley). Phytosociological relevés were made in the years 2005-2007 with Braun-Blanquet method. Species richness was a base to calculate the Shannon-Wiener diversity index. The Wieprz River valley has the character of a floodplain. In its middle reaches, communities of the Molinio- Arrhenatheretea class accounted for nearly 75% of all plant communities in grasslands. Herbaceous communities were represented by associations from the Filipendulion alliance. The greatest diversity (H’ = 3.4) was characteristic for vegetation of the Valeriano-Filipenduletum association. It formed small patches in abandoned meadows. Small patches of plants from the Lythro-Filipenduletum ulmariae association, having a slightly smaller floristic diversity (H’ = 3.0) were found on abandoned meadows located in highly silted and poor organic soils. Characteristic species of herbaceous communities (Filipendula ulmaria, Valeriana officinalis and Lythrum salicaria) occurred also in the sward of abandoned thistle meadows. Typical thistle meadows (Cirsietum rivularis), with the predominance of Cirsium rivulare developed in land depressions, not far from the Wieprz River, in the vicinity of abandoned drainage ditches and along the edges of the valley. However, the total abandonment of these meadows leads to changes in floristic composition of the sward and to succession towards herbaceous communities.
THE SEISMIC BEHAVIOUR OF CURTAIN WALLS: AN ANALYSIS BASED ON NUMERICAL MODELLING
Authors: Bârnaure Mircea , Voiculescu Mihai 
Published: January 2014

Abstract
The paper proposes a numerical model to estimate the structural behaviour of a stickbuilt glazed curtain wall system subjected to an imposed displacement of the supports in the plane of the wall. We discuss the role of the parameters that influence on the maximum inter-storey drift corresponding to the service limit state of the wall. The considered parameters are the dimensions of the glazed panel, the gap between the panel and the aluminium frame and the gap between the supports and the mullions. We discuss the problem of remnant deformation of glazed panels, and of misalignment as serviceability criteria. Comparisons are made to laboratory testing results.
MODELLING METHODS FOR SOIL-STRUCTURE INTERACTION APPLIED IN WIND TURBINE FOUNDATION DESIGN
Authors: Catană George , Savu Adrian-Alexandru , Ealangi Ionuț 
Published: January 2014

Abstract
The article presents a case study on soil-structure interaction modelling for Wind turbines. After a brief presentation on the history of wind turbines and their potential in Romania, the authors take on the task of modelling the soil-structure interaction for the raft and piles. Three models are chosen: in the first model the piles are fixed at foundation depth; in the second, elastic supports are modelled on the raft and the piles and in the third model both elastic supports and fixed supports are modelled. Several comparisons are made between the three cases referring to displacements, efforts and necessary reinforcement. Based on these comparisons, the most important conclusion drawn is that the modelling of the soil-structure interaction has an important effect on the final reinforcement of the raft and the piles, considering that the difference between the models reaches almost 18%, which in the case of really large foundations can draw the line between economic and non-economic design.
Detection of Screw Threads in Computed Tomography 3D Density Fields
Authors: Kosarevsky S. , Latypov V. 
Published: January 2014

Abstract
Measurements and inspection in production must be rapid, robust and automated. In this paper a new method is proposed to automatically detect screw threads in 3D density fields obtained from computed tomography measurement devices. The described method can be used to automate many operations during screw thread inspection process and drastically reduce operator’s influence on the measurement process resulting in lower measurement times and increased repeatability.
The Parallel Bayesian Toolbox for High-performance Bayesian Filtering in Metrology
Authors: Garcia E. , Hausotte T. 
Published: January 2014

Abstract
The Bayesian theorem is the most used instrument for stochastic inferencing in nonlinear dynamic systems and also the fundament of measurement uncertainty evaluation in the GUM. Many powerful algorithms have been derived and applied to numerous problems. The most widely used algorithms are the broad family of Kalman filters (KFs), the grid-based filters and the more recent particle filters (PFs). Over the last 15 years, especially PFs are increasingly the subject of researches and engineering applications such as dynamic coordinate measurements, estimating signals from noisy measurements and measurement uncertainty evaluation. This is rooted in their ability to handle arbitrary nonlinear and/or non-Gaussian systems as well as in their easy coding. They are sampling-based sequential Monte-Carlo methods, which generate a set of samples to compute an approximation of the Bayesian posterior probability density function. Thus, the PF faces the problem of high computational burden, since it converges to the true posterior when number of particles NP→∞. In order to solve these computational problems a highly parallelized C++ library, called Parallel Bayesian Toolbox (PBT), for implementing Bayes filters (BFs) was developed and released as open-source software, for the first time.
In this paper the PBT is presented, analyzed and verified with respect to efficiency and performance applied to dynamic coordinate measurements of a photogrammetric coordinate measuring machine (CMM) and their online measurement uncertainty evaluation.
Towards an Optimal Interest Point Detector for Measurements in Ultrasound Images
Authors: Zukal Martin , Beneš Radek , Číka Petr , Říha Kamil 
Published: January 2014

Abstract
This paper focuses on the comparison of different interest point detectors and their utilization for measurements in ultrasound (US) images. Certain medical examinations are based on speckle tracking which strongly relies on features that can be reliably tracked frame to frame. Only significant features (interest points) resistant to noise and brightness changes within US images are suitable for accurate long-lasting tracking. We compare three interest point detectors - Harris-Laplace, Difference of Gaussian (DoG) and Fast Hessian - and identify the most suitable one for use in US images on the basis of an objective criterion. Repeatability rate is assumed to be an objective quality measure for comparison. We have measured repeatability in images corrupted by different types of noise (speckle noise, Gaussian noise) and for changes in brightness. The Harris-Laplace detector outperformed its competitors and seems to be a sound option when choosing a suitable interest point detector for US images. However, it has to be noted that Fast Hessian and DoG detectors achieved better results in terms of processing speed.
Theatre Reviews
Authors: Bogdańska Olga , D’Auria Verónica , Heijes Coen , Georgopoulou Xenia 
Published: January 2014

The Tempest. Dir. Silviu Purcarete. The National Theatre “Marin Sorescu” of Craiova, Romania. 16th Shakespeare Festival, Gdansk, Poland
Richard III. Dir. Gabriel Villela. Blanes Museum Garden, Montevideo, Uruguay
Henry V. Dir. Des McAnuff. Stratford Shakespeare Festival, Ontario, Canada
Julius Caesar. Dir. Gregory Doran. Royal Shakespeare Company
A Midsummer Night’s Dream. Adapted and dir. Georgina Kakoudaki. Theatre groups _2 and 4Frontal, Theatro tou Neou Kosmou, Greece
Julius Caesar: Scripta Femina. Dir. Roubini Moschochoriti. Theatre group Anima Kinitiras Studio, Greece
COMPARATIVE PERFORMANCE OF VARIOUS SUNFLOWER HYBRIDS FOR YIELD AND ITS RELATED ATTRIBUTES
Authors: Sarwar M.A. , Khalil-Ur-Rehman M.N. , Javeed H.M.R. , Ahmad W. , Shehzad M.A. , Iqbal S. , Abbas H.T. 
Published: January 2014

ABSTRACT
An experiment to evaluate comparative performance of various sunflower hybrids for yield and its related attributes was conducted at the Agronomic Research Area, University of Agriculture, Faisalabad, Pakistan, during autumn 2008. Twelve sunflower hybrids, i.e. G-101 (H1), DK-4040 (H2), SF-187 (H3), S-278 (H4), Hysun-33 (H5), FH-37 (H6), Ausigold-61 (H7), Ausigold-62 (H8), FSS-50 (H9), NX- 00989 (H10), NX-00997 (H11) and XIYU-12 (H12) were included in the trail. The experiment was laid out in randomized complete block design (RCBD), having three replicates with plot size of 5m x 3m. Statistical analysis of the data showed significant differences for all the parameters. It was observed that Hysun-33 showed greater plant height (148.47 cm) and achene per head (682.70) than all other hybrids, however in case of yield (3891.0 kg ha-1) and other related traits such as number of plants m-2, leaf area index, head diameter and 1000-achene weight SF-187 displayed better performance by recording values (6.87), (4.33), (18.62) and (49.11g), respectively, following Hysun-33 for most of the traits. From the results of experiment it can be concluded that the hybrids SF-187 and Hysun-33 showed high productivity and are best adapted to the climatic conditions of Faisalabad.
« L’Empire de la liberté» selon Thomas Jefferson : un oxymore emblématique de la pensée nationale américaine à l’époque de l’expédition de Lewis et Clark (1804-1806)
Authors: Marienstras Élise 
Published: January 2014

The transcontinental expedition of Lewis and Clark, as the first step of America’swestward expansion, was set within the framework of
Jefferson’s project for an •empire of liberty”, or •for” liberty. The phrase itself gives insights into the tensions of Jefferson’sdiscourse, tensions that are detected in the policy of the Jefferson administration, regarding Indian lands and slavery. The influence of this founding paradox is still to be felt today.
L’éducation dans Chrestomathia de Jeremy Bentham
Authors: Cléro Jean-Pierre 
Published: January 2014

Chrestomathia est la définition justifiée d’un programme scolaire utilitariste. Bentham descend dans le détail de l’éducation du nouveau travailleur.
Or cette école dont il analyse jusqu’à l’équilibre budgétaire, ne verra jamais le
jour ; Bentham le sait. Cette contradiction n’est pas la seule. L’élève de l’Externat
chrestomathique serait-il plus heureux que celui d’une autre école ? La pratique de la délation, des classements, de l’apprentissage par coeur peut en faire douter. L’externat semble délibérément ouvert pour constituer la main d’oeuvre dont le marché, bouleversé par la révolution industrielle, a besoin. L’instruction ne
semble pas centrée sur la formation du citoyen. Si éloigné que fut le projet
benthamien de celui d’un Condorcet par exemple, les deux auteurs promeuvent
un enseignement puisé aux principes les plus élevés et les plus efficaces des sciences et des arts. Chrestomathia est l’un des meilleurs témoignages de l’état
organisé de la science et des techniques anglaises au début du XIXe siècle.
Transcriptional Regulator CTR9 Inhibits Th17 Differentiation via Repression of IL-17 Expression
Authors: Yoo Hyeon-Seok , Choi Yongwook , Ahn Narae , Lee Saseong , Kim Wan-Uk , Jang Min Seong , Jang Myoung Ho , Kim Yon Su , Yoo Joo-Yeon 
Published: January 2014

Abstract
PAF complex is an evolutionarily conserved transcriptional complex that associates with RNA polymerase II in the coding region of actively transcribing genes. Although its transcriptional activity is closely related to diverse cellular processes, such as cell-cycle progression or development in mammals, its role in immune responses has not been addressed yet. In this study, we show that CTR9, a component of PAF complex, functions as a repressor of Th17 differentiation. Both mRNA and protein levels of CTR9 were significantly decreased during the differentiation processes of naive T into Th17 effector cells. When CTR9 was depleted, IL-17 expression was induced and differentiation into Th17 cells enhanced. In naive T cells, CTR9 occupied the coding region of Il17a, but dissociated under Th17 in vitro-polarizing conditions. In contrast, both CDC73 and PAF1 were recruited to the Il17a locus under Th17-differentiation conditions. In the IL-6–stimulated splenocytes, expression of CTR9 was decreased, and chromatin-bound CTR9 disappeared in the coding region of Il17a. IL-6 also directly repressed expression of CTR9 gene, as promoter activity of CTR9 was similarly repressed by IL-6 treatment. Moreover, in mice with collagen-induced arthritis, lentivirus-mediated CTR9 overexpression in the joints ameliorated arthritis severity, decreasing the frequency of CD4+IL-17+ T cells in lymph nodes. In conclusion, our data propose a novel feed-forward loop of IL-17 transcriptional regulatory circuit, via IL-6–mediated repression of CTR9 which is a transcriptional repressor of IL-17.
Second-Generation Langerhans Cells Originating from Epidermal Precursors Are Essential for CD8+ T Cell Priming
Authors: Elnekave Mazal , Furmanov Karina , Shaul Yaffa , Capucha Tal , Eli-Berchoer Luba , Zelentsova Katya , Clausen Björn E. , Hovav Avi-Hai 
Published: January 2014

Abstract
In vivo studies questioned the ability of Langerhans cells (LCs) to mediate CD8+ T cell priming. To address this issue, we used intradermal immunization with plasmid DNA, a system in which activation of CD8+ T cells depends on delayed kinetics of Ag presentation. We found that dendritic cells (DCs) located in the skin at the time of immunization have limited ability to activate CD8+ T cells. This activity was mediated by a second generation of DCs that differentiated in the skin several days after immunization, as well as by lymph node–resident DCs. Intriguingly, CD8+ T cell responses were not affected following treatment with clodronate liposomes, immunization of CCR2−/− mice, or local neutralization of CCL20. This suggests that local, rather than blood-derived, DC precursors mediate CD8+ T cell priming. Analysis of DC differentiation in the immunized skin revealed a gradual increase in the number of CD11c+ cells, which reached their maximum 2 wk after immunization. A similar differentiation kinetics was observed for LCs, with the majority of differentiating LCs proliferating in situ from epidermal precursors. By using B6/Langerin–diphtheria toxin receptor chimeric mice and LC ablation, we demonstrated that epidermal LCs were crucial for the elicitation of CD8+ T cell responses in vivo. Furthermore, LCs isolated from lymph nodes 2 wk after immunization contained the immunization plasmid and directly activated Ag-specific CD8+ T cells ex vivo. Thus, these results indicate that second-generation Ag-expressing LCs differentiating from epidermal precursors directly prime CD8+ T cells and are essential for optimal cellular immune responses following immunization with plasmid DNA.
Zinc level and obesity
Authors: Zaky Doaa S. E. , Sultan Eman A. , Salim Mahmoud F. , Dawod Rana S. 
Published: January 2014

Abstract

Background
Obesity is a chronic condition that is associated with disturbances in the metabolism of zinc. Therefore, the aim of this study was to investigate the relationship between serum zinc level and different clinical and biochemical parameters in obese individuals.

Patients and methods
Twenty-four individuals with BMI more than 30 kg/m2 and 14 healthy controls (BMI < 24 kg/m2) were assessed for BMI and waist circumference using anthropometric measurements. Colorimetric tests were carried out for the determination of zinc in serum.

Results
In this study, BMI and waist circumference were higher in the obese group than in the control group (P < 0.05). The mean serum zinc levels were 92 ± 31.1 and 101 ± 70 μg/dl in the obese group and control group (P > 0.05), respectively. There was a significant negative correlation between the serum zinc level and BMI, waist circumference and low-density lipoprotein (P < 0.05).

Conclusion
Plasma zinc concentration in obese individuals showed an inverse relationship with the waist circumference and BMI as well as serum low-density lipoprotein-cholesterol and correlated positively with high-density lipoprotein.
Analyse des pratiques des acteurs scolaires travaillant en communauté de pratique (CP) à travers leurs métaphores
Authors: Bouchamma Yamina , Michaud Clémence 
Published: January 2014

Cette recherche vise à comprendre les pratiques d’acteurs scolaires du Québec et du Nouveau-Brunswick (N = 23) au sein de communautés de pratique (CP) à travers les métaphores que ces personnes formulent sur leur travail dans le cadre de ces communautés. L’étude se base sur le concept de la métaphore et sur la théorie sociale de l’apprentissage dans les CP (Wenger, 1998). Les interviewés ont montré par la formulation de métaphores, d’une part, la synergie présente dans leurs CP et, d’autre part, les défis associés au pouvoir, à la communication et aux désaccords.
Can videogames be used to develop the infant stage educational curriculum?
Authors: Marín Díaz Verónica , Martín-Párraga Javier 
Published: January 2014

Abstract
The utilization of videogames is not too common due to their consideration as an element that interferes with the educational and learning process. Thus, few teachers are ready to include videogames as didactic tools. Nevertheless, some educators who consider that they have a potential to become didactic tools are progressively adopting videogames as part of their teaching strategies. This paper presents the result of an academic experiment conducted with university students from the degree of Primary Education. The initial step in this experience consisted in determining whether videogames could be seen as another of the many tools employed to develop the infant stage educational curriculum. A survey was developed in order to achieve this goal. The interviewees answered this survey in two different stages, providing as a result that these future teachers would definitely be willing to incorporate videogames in their classrooms once they have been trained to do so.
Oxides‐modified Raney copper as catalysts for selective hydrogenolysis of glycerol
Authors: Yue Chuan‐Jun , Zhang Qiu‐Yun , Gu Li‐Ping , Su Yang , Zhu Shao‐Ping 
Published: January 2014

ABSTRACTA series of Raney Cu‐based catalysts (Raney Cu modified by such oxides as ZrO2, Al2O3, ZrO2, MgO, SiO2, TiO2, and ZnO) were prepared by wet‐mixing method and used in the hydrogenolysis of glycerol. Modified Raney copper as well as Raney Cu presented the catalytic performance for glycerol hydrogenolysis in different degree, and the yields of 1,2‐propanediol as the catalytic selective product were in the order of Cu/MgO > Cu/ZnO > Cu/SiO2 > Cu/TiO2 > Cu/ZrO2 > Cu/Al2O3 > Raney Cu. Obviously, Cu/MgO showed excellent activity and selectivity for glycerol hydrogenolysis by liquid‐phase reaction among those catalysts and was characterized by means of X‐ray diffraction, transmission electron microscopy, Brunauer–Emmett–Teller, hydrogen temperature programmed desorption, CO2 temperature programmed desorption, and thermogravimetry differential scanning calorimetry. The results showed that the MgO was well dispersed within the pores of Raney Cu, resulting in the generation of new phase Cu–MgO after calcination. The catalytic conversion of glycerol hydrogenolysis using the Raney Cu/MgO catalyst reached 75 wt.%, with a selectivity of 85 wt.% for 1,2‐propanediol at 180 °C, 1.0 MPa of hydrogen, and 24 h. The study revealed that the Cu–MgO phase was responsible for high selectivity of 1,2‐propanediol in glycerol hydrogenolysis. © 2014 Curtin University of Technology and John Wiley & Sons, Ltd.
Deciphering the spatio‐temporal regulation of entry and progression through mitosis
Authors: Gheghiani Lilia , Gavet Olivier 
Published: January 2014

AbstractMitosis has been studied since the early 1880s as a key event of the cell division cycle where remarkable changes in cellular architecture take place and ultimately lead to an equal segregation of duplicated chromosomes into two daughter cells. A detailed description of the complex and highly ordered cellular events taking place is now available. Many regulators involved in key steps including entry into mitosis, nuclear envelope breakdown, microtubule (MT) spindle formation, and chromosome attachment, as well as mitotic exit and cytokinesis, have also been identified. However, understanding the precise spatio‐temporal contribution of each regulator in the cell reorganization process has been technically challenging. This review will focus on a number of recent advances in our understanding of the spatial distribution of protein activities and the temporal regulation of their activation and inactivation during entry and progression through mitosis by the use of intramolecular Förster resonance energy transfer (FRET)‐based biosensors.
Angiogenic/osteogenic response of BMMSCs on bone‐derived scaffold: Effect of hypoxia and role of PI3K/Akt‐mediated VEGF‐VEGFR pathway
Authors: Zhou Yi , Guan Xiaoxu , Yu Mengfei , Wang Xinhua , Zhu Wenyuan , Wang Chaowei , Yu Mengliu , Wang Huiming 
Published: January 2014

AbstractBone tissue deficiency is a common clinical challenge. Tissue‐engineered bone constructs are an effective approach for the repair of orthopedic bone defects. Mimicking the essential components of the in vivo microenvironment is an efficient way to develop functional constructs. In this study, bone marrow‐derived mesenchymal stromal cells (BMMSCs) were seeded into bone‐derived scaffolds, a material with similar structure to natural bone. This was done under hypoxic conditions, an environment that imitates that experienced by BMMSCs in vivo. Our data indicate that hypoxia (5% O2) significantly increases the proliferation of BMMSCs seeded in scaffolds. As reflected by highly expressed osteogenesis‐ and angiogenesis‐associated biomarkers, including vascular endothelial growth factor (VEGF), RUNX2, bone morphogenetic protein‐2/4 and osteopontin, hypoxia also significantly increases the osteogenic and angiogenic responses of BMMSCs seeded into bone‐derived scaffold composites. PI3K/Akt‐mediated regulation of VEGF‐activated VEGFR1/2 signaling is important for hypoxia‐induced proliferative/osteogenic/angiogenic responses in BMMSC cellular scaffolds. The combination of bone‐derived scaffolds and hypoxia is conducive to the differentiation of BMMSCs into functional tissue‐engineered scaffold composites.