bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of Yielding Steel Arch Support with Rock Bolts in Mine Roadways Stability Aspect
Authors: Majcherczyk Tadeusz , Niedbalski Zbigniew , Małkowski Piotr , Bednarek łukasz 
Published: November 2014

Abstract
The result of the search for new technological solutions in the field of support for roadways in coal mines has in recent years been the widespread use of steel arch with rockbolt support systems. The efficiency of these systems is affected among other things by the option of installing rock bolts after the actual driving the mine roadway, the increased load capacity that these systems can support, and their resistance to dynamic weight. Large variation in the way that these steel arch support can be connected using different types of rock bolts necessitates mining research revealing the effectiveness of such solutions. Although the steel arch with rockbolt support system is used in the majority of European coal mines, it is still not possible to apply templates of schemes due to the diversity of geological and mining conditions. Therefore, throughout a period of several years, the authors of this article conducted research in situ under conditions of different schemes related to connecting arched support frames with rock bolts, with only selected results being presented in the article. The measurements of convergence, load supported by the system frame, load supported by the rock bolts, and the stratification of roof rocks were analyzed, carried out in two roadways with yielding steel arch support in which strand bolts were applied. The article also proposes the index for working maintenance nuw, used in preliminarily assessing the stability of a given working with a limited number of data concerning geomechanical conditions. Additionally considered are empirical methods used in Poland for designing steel arch with rock bolt support systems.
The results of mine research indicate that strengthening yielding steel support with strand bolts through steel beams maintains the stability of a roadway, even when exposed to the exploitation stress. Aside from the impact of exploitation, deformations of the support system are negligible, despite the fact that the tensile forces acting on the rock bolts can reach values of up to 160 kN. Under favorable geological and mining conditions, support system frames can be spread up to 1.5 m apart when using rock bolts between them. The conducted measurement of convergence during a three year period revealed a compression amounting to a few centimeters. The results obtained by the research fully confirm the effectiveness of combined yielding steel arch with rock bolt support systems under different mining conditions.
Multi-Criteria Evaluation of Coal Properties in Terms of Gasification
Authors: Marciniak-Kowalska Jolanta , Niedoba Tomasz , Surowiak Agnieszka , Tumidajski Tadeusz 
Published: November 2014

Abstract
This paper presents a comparative analysis of two types of coal taken from the ZG Janina and ZG Wieczorek coalmines. The aim of this study has been to analyze the suitability of the coal in the context of the gasification process. The types of coal vary considerably in terms of their characteristics. Each of them was subjected to treatment in a ten-ringed annular jig. A particle size of 0-18 mm constituted the feed. The separated coal was divided into five layers, each of them containing material from two additional annular jigs. Analysis of their characteristics was carried out for each of the five layers and for both types of coal obtained, taking into account both their physicochemical properties as well as chemical ones. Each of these characteristics was then presented in three-dimensional surface diagrams, where the ordinate (or Y-axis) and abscissa (X-axis) was the particle size and height in which the material ended up in the jig (expressed as a percentage of the total height of the device). On the basis of observations, it was found that the types of coal have different potential for gasification, although both types are within the limits specified on the basis of previous studies. A correlation analysis between particle size and remaining characteristics of coal was carried out for each of the layers, allowing to determine which of the studied characteristics induced changes significant from the point of view of the coal gasification process. The entire research and observation was supported by conclusions and findings, which shall form the basis for further, in-depth analysis of coal.
Influence of Coal Particle Size on Coal Adsorption and Desorption Characteristics
Authors: Zhang Lei , Aziz Naj , Ren Ting , Nemcik Jan , Tu Shihao 
Published: November 2014

Abstract
Accurate testing coal isotherm can play a significant role in the areas of coal seam gas drainage, outburst control, CO2 geo-sequestration, coalbed methane (CBM) and enhanced coalbed methane recovery (ECBM) etc. The effect of particle size on the CO2 and CH4 sorption capacity of bituminous coal from Illawarra, Australia was investigated at 35°C and at pressure up to 4 MPa. A unique indirect gravimetric apparatus was used to measure the gas adsorption and desorption isotherms of coal of different particle sizes ranging from around 150 urn to 16 mm. Langmuir model was used to analysis the experimental results of all gases. Coal particle size was found to have an apparent effect on the coal ash content and helium density results. Coal with larger particle size had higher ash content and higher helium density. The sorption isotherm was found to be highly sensitive with helium density of coal which was determined in the procedure of testing the void volume of sample cell. Hence, coal particle size had a significant influence on the coal sorption characteristics including sorption capacity and desorption hysteresis for CO2 and CH4, especially calculated with dry basis of coal. In this study, the 150-212 um (150 um) coal samples achieved higher sorption capacity and followed by 2.36-3.35 mm (2.4 mm), 8-9.5 mm (8 mm) and 16-19 mm (16 mm) particle size samples. However, the differences between different coal particles were getting smaller when the sorption isotherms are calculated with dry ash free basis. Test with 150 um coal samples were also found to have relatively smaller desorption hysteresis compared with the other larger particle size samples. The different results including adsorption/desorption isotherm, Langmuir parameters and coal hysteresis were all analysed with the CO2 and CH4 gases.
A Study of the Optimal Model of the Flotation Kinetics of Copper Slag from Copper Mine BOR
Authors: Stanojlović Rodoljub D. , Sokolović Jovica M. 
Published: November 2014

Abstract
In this study the effect of mixtures of copper slag and flotation tailings from copper mine Bor, Serbia on the flotation results of copper recovery and flotation kinetics parameters in a batch flotation cell has been investigated.
By simultaneous adding old flotation tailings in the ball mill at the rate of 9%, it is possible to increase copper recovery for about 20%. These results are compared with obtained copper recovery of pure copper slag.
The results of batch flotation test were fitted by MatLab software for modeling the first-order flotation kinetics in order to determine kinetics parameters and define an optimal model of the flotation kinetics. Six kinetic models are tested on the batch flotation copper recovery against flotation time. All models showed good correlation, however the modified Kelsall model provided the best fit.
Fragmentation, Cost and Environmental Effects of Plaster Stemming Method for Blasting at A Basalt Quarry
Authors: Cevizci Halim 
Published: November 2014

Abstract
In this study, the plaster stemming application for blasting at a basalt quarry is studied. Drill cuttings are generally used in open pits and quarries as the most common stemming material since these are most readily available at blast sites. However, dry drill cuttings eject very easily from blastholes without offering much resistance to blast energy. The plaster stemming method has been found to be better than the drill cuttings stemming method due to increased confinement inside the hole and better utilization of blast explosive energy in the rock. The main advantage of the new stemming method is the reduction in the cost of blasting. At a basalt quarry, blasting costs per unit volume of rock were reduced to 15% by increasing burden and spacing distances. In addition, better fragmentation was obtained by using the plaster stemming method. Blast trials showed that plaster stemming produced finer material. In the same blast tests, +30 cm size fragments were reduced to 47.3% of the total, compared to 32.6% in the conventional method of drill cuttings stemming. With this method of stemming, vibration and air shock values increased slightly due to more blast energy being available for rock breakage but generally these increased values were small and stayed under the permitted limit for blast damage criteria unless measuring distance is too close.
Nonlinear Dynamics of a Controlled Stirred Tank Bioreactor With Predator-Prey Relationship
Authors: Tabiś Bolesław , Skoneczny Szymon , Stryjewski Wojciech S. 
Published: November 2014

Abstract
The paper presents the dynamic characteristics of a continuous tank bioreactor for microbiological process, with a developed predator-prey food chain. The presence of the predator microorganism considerably influences the position and stability character of steady-states. There appears to exist a wide range of unstable steady-states and high-amplitude oscillations of state variables. Without automatic control, the system can operate only in unsteady conditions. From technological point of view, this circumstance is unfavorable. It was shown that oscillations can be removed by employing automatic control with continuous P or PI controllers. Moreover, the use of a controller with integrating element causes removal of the predator from the bioreactor. The paper discusses an application of this phenomenon for practical purposes.
Computational Modelling of a Tangentially Fired Boiler With Deposit Formation Phenomena
Authors: Modliński Norbert J. 
Published: November 2014

Abstract
Any complete CFD model of pulverised coal-fired boiler needs to consider ash deposition phenomena. Wall boundary conditions (temperature and emissivity) should be temporally corrected to account for the effects of deposit growth on the combustion conditions. At present voluminous publications concerning ash related problems are available. The current paper presents development of an engineering tool integrating deposit formation models with the CFD code. It was then applied to two tangentially-fired boilers. The developed numerical tool was validated by comparing it with boiler evaporator power variation based on the on-line diagnostic system with the results from the full CFD simulation.
Frameless robotic stereotactic biopsies: a consecutive series of 100 cases
Authors: Lefranc Michel , Capel Cyrille , Pruvot-Occean Anne-Sophie , Fichten Anthony , Desenclos Christine , Toussaint Patrick , Le Gars Daniel , Peltier Johann 
Published: November 2014

OBJECT
Stereotactic biopsy procedures are an everyday part of neurosurgery. The procedure provides an accurate histological diagnosis with the least possible morbidity. Robotic stereotactic biopsy needs to be an accurate, safe, frameless, and rapid technique. This article reports the clinical results of a series of 100 frameless robotic biopsies using a Medtech ROSA device.

METHODS
The authors retrospectively analyzed their first 100 frameless stereotactic biopsies performed with the robotic ROSA device: 84 biopsies were performed by frameless robotic surface registration, 7 were performed by robotic bone fiducial marker registration, and 9 were performed by scalp fiducial marker registration. Intraoperative flat-panel CT scanning was performed concomitantly in 25 cases. The operative details of the robotic biopsies, the diagnostic yield, and mortality and morbidity data observed in this series are reported.

RESULTS
A histological diagnosis was established in 97 patients. No deaths or permanent morbidity related to surgery were observed. Six patients experienced transient neurological worsening. Six cases of bleeding within the lesion or along the biopsy trajectory were observed on postoperative CT scans but were associated with transient clinical symptoms in only 2 cases. Stereotactic surgery was performed with patients in the supine position in 93 cases and in the prone position in 7 cases. The use of fiducial markers was reserved for posterior fossa biopsy via a transcerebellar approach, via an occipital approach, or for pediatric biopsy.

CONCLUSIONS
ROSA frameless stereotactic biopsies appear to be accurate and safe robotized frameless procedures.
La gestion des ressources en eau dans la ville antique de Délos (Cyclades, Grèce) (The water resources management in the ancient town of Delos (Cyclades, Greece))
Authors: Desruelles Stéphane 
Published: November 2014

À l'époque hellénistique, les ressources en eau alimentées par les précipitations locales devaient permettre l'approvisionnement des habitants (plus de 10 000 au début du fr siècle av. J.-C. - Bruneau et Ducat, 2005) de la petite île cristalline de Délos (3,6 km2), au centre des Cyclades (Grèce). Les apports pluviaux, aussi faibles et irréguliers qu 'ils le sont aujourd'hui, rechargeaient des nappes dont le volume était limité par la faible taille des bassins versants et par la structure cristalline. L 'alimentation en eau de Délos a été réalisée grâce à la mise en place d'un système de gestion optimisée des eaux pluviales et phréatiques, constitué de puits, de citernes et de «réservoirs à alimentation mixte » fonctionnant comme des «puits de recharge ».
L'étude des composantes climatiques, morphostructurales et hydrologiques du milieu physique et de leur évolution a été croisée avec les données archéologiques et historiques. Ce travail, réalisé notamment en collaboration avec des archéologues de l'École française d'Athènes, a permis de proposer des hypothèses sur la gestion de l'eau à Délos dans l'Antiquité.
Dits et non dits de la théorie bernienne : l'exemple de la reconnaissance
Authors: Maquet Jean , Quazza Jean-Pierre 
Published: November 2014

Après avoir énoncé les objectifs de leur démarche, les auteurs décrivent leur méthodologie de recherche sur les aspects conceptuels de l’analyse transactionnelle. À partir d’un premier inventaire des occurrences d’un concept dans les textes de Berne, ils cherchent à mettre en lumière le cheminement de la pensée de Berne, y compris dans ses glissements, ses incohérences, ses lacunes et ses raccourcis logiques. Pour illustrer leur approche méthodologique, ils ont choisi d’explorer le concept de reconnaissance, tant dans ses apparitions propres chez Berne, que dans les constellations d’idées qui lui sont généralement associées (comme « stimuli », « besoins de stimulation », « strokes » ou dans une déclinaison plus steinerienne, « économie des strokes »). Dans les troisième et quatrième parties, les auteurs s’attachent aux conditions propres à reconstruire une théorie de la reconnaissance qui tienne une place centrale dans l’articulation des concepts transactionnels, en particulier dans l’intégration de l’intrapsychique et du relationnel. Pour ce faire, de la même manière que Berne s’est appuyé sur des spécialistes de la psychobiologie (Spitz) ou de la psychosociologie (Mead), ils se sont attachés à prendre en compte des élaborations théoriques plus récentes du côté de la psychanalyse (Benjamin) ou de la philosophie sociale (Honneth). « L’incompréhensible de cet être soi-même dans un étranger » Hegel
Désir d'histoire
Authors: Wahnich Sophie 
Published: November 2014

Il s’agit non plus de (dé)placer le sujet historien dans l’ombre, mais de le saisir comme combinatoire singulière, capable de devenir le porte-voix du bruit indissociablement tragique et politique du monde, de réordonner ce bruit par le travail de la raison sensible, c’est‑à-dire cette capacité à ressaisir le sens de ses émotions non pour les évacuer mais pour les mettre au travail, en faire le carburant d’une dynamique de recherche rationnelle, de quête de vérité. Le régime d’historicité d’une histoire qui s’assumerait à cet égard sensible est un double présentisme, qui cherche à mettre en relation deux présents, non pour assurer la vérité d’un savoir certain mais pour les faire s’éclairer l’un l’autre, dans un pari risqué. Ce double présentisme pourrait s’appeler « contemporanéisme ». Il prendrait en charge la conscience historique comme conscience politique et tragique, viserait un mode d’intellectualisation du monde dont la fonction fondatrice serait rituelle et infinie : apaiser l’angoisse de cette condition tragique.
Entre arrachement et attachement à la terre
Authors: Dupont Yves 
Published: November 2014

S’interrogeant sur les relations dialectiques qui unissent le chercheur à sa biographie, l’auteur souligne le caractère décisif de ses « expériences primordiales » dans la construction de son identité, dans son parcours intellectuel et dans le choix de ses objets de recherche. Il s’attache ainsi à montrer que, au-delà des disciplines et des méthodes qu’il a mobilisées, il s’est essentiellement efforcé d’interpréter les fondements anthropologiques de la modernité, à savoir sa passion démesurée pour l’arrachement à la terre et l’artificialisation de la vie.
Borrelia burgdorferi Arthritis–Associated Locus Bbaa1 Regulates Lyme Arthritis and K/B×N Serum Transfer Arthritis through Intrinsic Control of Type I IFN Production
Authors: Ma Ying , Bramwell Kenneth K. C. , Lochhead Robert B. , Paquette Jackie K. , Zachary James F. , Weis John H. , Teuscher Cory , Weis Janis J. 
Published: November 2014

Abstract
Localized upregulation of type I IFN was previously implicated in development of Borrelia burgdorferi–induced arthritis in C3H mice, and was remarkable due to its absence in the mildly arthritic C57BL/6 (B6) mice. Independently, forward genetics analysis identified a quantitative trait locus on Chr4, termed B. burgdorferi–associated locus 1 (Bbaa1), that regulates Lyme arthritis severity and includes the 15 type I IFN genes. Involvement of Bbaa1 in arthritis development was confirmed in B6 mice congenic for the C3H allele of Bbaa1 (B6.C3-Bbaa1), which developed more severe Lyme arthritis and K/B×N model of rheumatoid arthritis (RA) than did parental B6 mice. Administration of a type I IFN receptor blocking mAb reduced the severity of both Lyme arthritis and RA in B6.C3-Bbaa1 mice, formally linking genetic elements within Bbaa1 to pathological production of type I IFN. Bone marrow–derived macrophages from Bbaa1 congenic mice implicated this locus as a regulator of type I IFN induction and downstream target gene expression. Bbaa1-mediated regulation of IFN-inducible genes was upstream of IFN receptor–dependent amplification; however, the overall magnitude of the response was dependent on autocrine/paracrine responses to IFN-β. In addition, the Bbaa1 locus modulated the functional phenotype ascribed to bone marrow–derived macrophages: the B6 allele promoted expression of M2 markers, whereas the C3H allele promoted induction of M1 responses. This report identifies a genetic locus physically and functionally linked to type I IFN that contributes to the pathogenesis of both Lyme and RA.
Role and Regulation of CD1d in Normal and Pathological B Cells
Authors: Chaudhry Mohammed S. , Karadimitris Anastasios 
Published: November 2014

Abstract
CD1d is a nonpolymorphic, MHC class I–like molecule that presents phospholipid and glycosphingolipid Ags to a subset of CD1d-restricted T cells called invariant NKT (iNKT) cells. This CD1d–iNKT cell axis regulates nearly all aspects of both the innate and adaptive immune responses. Expression of CD1d on B cells is suggestive of the ability of these cells to present Ag to, and form cognate interactions with, iNKT cells. In this article, we summarize key evidence regarding the role and regulation of CD1d in normal B cells and in humoral immunity. We then extend the discussion to B cell disorders, with emphasis on autoimmune disease, viral infection, and neoplastic transformation of B lineage cells, in which CD1d expression can be altered as a mechanism of immune evasion and can have both diagnostic and prognostic importance. Finally, we highlight current and future therapeutic strategies that aim to target the CD1d–iNKT cell axis in B cells.
CTLA-4 expressed by human dendritic cells modulates thei cytokine secretion and induction of T cell proliferation
Authors: Laurent S. , Carrega P. , Saverino D. , Piccioli P. , Camoriamo M. , Morabito A. , Dozin B. , Fontana V. , Simone R. , Mortara L. , Mingari M.C. , Ferlazzo G. , Pistillo M.P. 
Published: November 2014

<p>CTLA-4 is the major nefative regulator of T cell response. We have analyzed the expression of CTLA-4 in human monocytes and monocyte-derived DCs and the effects of its engagement on cytokine production and T cell stimulatory activity by mature DCs (mDCs). We found the CTLA-4 was highly expressed on freshly isolated monocytes, then down-modulated on the immature DCs (iDCs) and upregulated on mDCs. Treatment of mDCS with an agonistic anti-CTLA-4 m Ab enhanced secretion of IL-10 but reduced secretion of IL-8 and IL-12, as well as autologous CD4* T-cell proliferation in response to simulation with PPD recall antigenloaded-DCs. Neutralization of IL-10 with an anti-IL-10 antibody partially restored the ability of anti-CTLA-4-treated mDCs to stimulate T cell proliferation in response to PPD. Our data provide the first evidence that CTLA-4 receptor is expressed by human mDCs and exerts immune modulatory effects in these cells.</p>