bluuebunny/crossref_metadata_2025_split huggingface dataset:
Joint Stiffness and Deformation Behaviour of Discontinuous Rock
Authors: Nassir Mohammad , Settari Antonin , Wan Richard 
Published: September 2010

Summary
Some rock masses are characterized by joints, fractures and other planes of weakness which reduce the strength and deformation properties of rock structure. Under different loading conditions, joints with weaker than normal and shear deformation strength undergo a relatively higher strain than intact rock. Because permeability of jointed rock masses in fractured reservoirs is a strong function of joint aperture size, one may expect a major change in the permeability when subjected to confining load variation. Therefore, it is important to establish the relation between the stress-strain of the jointed rock mass and the reservoir permeability. This relation is particularly important to model hydraulic fracturing and productivity decline in tight gas wells.
In this paper, a new relation is proposed to model prepeak shear stiffness of the joint based on the conventional joint surface parameters and the confining load. Furthermore, constitutive matrices for evaluating deformation behaviour of a single-joint and regularly jointed rock are presented as the results of an analytical study. Based on the concept of joint stiffness, an equivalent stiffness for regularly jointed rock masses was derived, assuming that the deformation of the jointed rock mass equals the sum of the deformation of the rock matrix and the joints. Finite element technique is used to numerically model the deformation behaviour of the jointed rock under various loading conditions. The applicability of the constitutive model to represent jointed rock mass was confirmed from comparison of the numerical results with some of the existing experimental data.
The model presented here will be the key element for integrated geomechanical modelling of tight gas wells, naturally fracture reservoirs and other fracturing processes in stress-sensitive reservoirs.
A Semi-Unsteady-State Wellbore Steam/Water Flow Model for Prediction of Sandface Conditions in Steam Injection Wells
Authors: Bahonar Mehdi , Azaiez Jalel , Chen Zhangxing 
Published: September 2010

Summary
A numerical nonisothermal two-phase wellbore model is developed to simulate downward flow of a steam and water mixture in the wellbore. This model entails simultaneous solution of coupled mass and momentum conservation equations inside the wellbore with an energy conservation equation for the fluids within the wellbore, surrounding medium and formation. A new drift-flux model that accounts for slip between the phases inside the wellbore is employed. In addition, a 2D implicit scheme that allows for heat transfer in both the axial and radial directions in the formation is developed. Furthermore, a rigorous nonlinear temperature- and depth-dependent overall heat transfer coefficient is implemented. The model predictions are validated against real field data and other available models. The model is useful for designing well completion and accurately computing the wellbore/formation heat transfer, which is important for estimating oil recovery by using steam injection.
Initialization of ice-sheet forecasts viewed as an inverse Robin problem
Authors: Arthern Robert J. , Gudmundsson G. Hilmar 
Published: September 2010

AbstractAs simulations of 21st-century climate start to include components with longer timescales, such as ice sheets, the initial conditions for those components will become critical to the forecast. This paper describes an algorithm for specifying the initial state of an ice-sheet model, given spatially continuous observations of the surface elevation, the velocity at the surface and the thickness of the ice. The algorithm can be viewed as an inverse procedure to solve for the viscosity or the basal drag coefficient. It applies to incompressible Stokes flow over an impenetrable boundary, and is based upon techniques used in electric impedance tomography; in particular, the minimization of a type of cost function proposed by Kohn and Vogelius. The algorithm can be implemented numerically using only the forward solution of the Stokes equations, with no need to develop a separate adjoint model. The only requirement placed upon the numerical Stokes solver is that boundary conditions of Dirichlet, Neumann and Robin types can be implemented. As an illustrative example, the algorithm is applied to shear flow down an impenetrable inclined plane. A fully three-dimensional test case using a commercially available solver for the Stokes equations is also presented.
Propagation of long fractures in the Ronne Ice Shelf, Antarctica, investigated using a numerical model of fracture propagation
Authors: Hulbe Christina L. , LeDoux Christine , Cruikshank Kenneth 
Published: September 2010

AbstractLong rifts near the front of the Ronne Ice Shelf, Antarctica, are observed to begin as fractures along the lateral boundaries of outlet streams feeding the shelf. These flaws eventually become the planes along which tabular icebergs calve. The fractures propagate laterally as they advect through the shelf, with orientations that can be explained by the glaciological stress field. Fracture length remains constrained over much of the advective path, and locations of crack tip arrest are observed to coincide with structural boundaries, such as suture zones between ice from adjacent outlet glaciers. Geomechanical principles and numerical models demonstrate that in the absence of these suture zones crack tips are unlikely to arrest in these locations. We conclude that lateral inhomogeneity in the ice plays an important role in fracture mechanics through most of the ice shelf. Only near the shelf front are these local structural effects overcome such that the large rifts required for tabular iceberg production develop.
Evaluation of Selected Rheumatoid Arthritis Activity Scores for Office-based Assessment
Authors: SULLIVAN MARY BETH , IANNACCONE CHRISTINE , CUI JING , LU BING , BATRA KERRI , WEINBLATT MICHAEL , SHADICK NANCY A. 
Published: September 2010

Objective.Patient-reported measures can quickly provide assessments of rheumatoid arthritis (RA) disease activity in the office setting and do not require a laboratory test or physician examination. The goal of our study was to establish the validity of patient-reported indices compared to the C-reactive protein-based Disease Activity Score (DAS28-CRP4).Methods.Baseline and 1-year followup DAS28-CRP4 data were obtained from 740 RA subjects and were compared to indices (MDHAQ, CDAI, RAPID, RADAI, GAS) according to cyclic citrullinated peptide (CCP) status and change at 1 year. Pairwise correlations were calculated for each index.Results.Among 740 subjects, mean age 57 years, disease duration 14 years, the CDAI (r = 0.84, Δ r = 0.80) and RAPID (r = 0.71, Δ r = 0.70) had the highest correlation with the DAS28-CRP4 scores at baseline and 1 year. These correlations were not influenced by CCP status, disease-modifying antirheumatic drug use, biologic use, or by disease duration.Conclusion.In RA, the CDAI and RAPID correlated well with the DAS28-CRP4. They may both be practical and informative in the care of patients in the office setting.
Lack of TNFR p55 Results in Heightened Expression of IFN-γ and IL-17 during the Development of Reactive Arthritis
Authors: Eliçabe Ricardo J. , Cargnelutti Ethelina , Serer María I. , Stege Patricia W. , Valdez Susana R. , Toscano Marta A. , Rabinovich Gabriel A. , Di Genaro María S. 
Published: September 2010

AbstractReactive arthritis (ReA) is a type of arthritis originating from certain gastrointestinal or genitourinary infections. In previous studies, we reported the development of progressive Yersinia enterocolitica-induced ReA in mice lacking TNFR p55; however, the mechanisms underlying this effect are still uncertain. In this study, we investigated the impact of TNFR p55 deficiency in modulating Ag-specific Th1 and Th17 responses during this arthritogenic process. We found more severe ReA in TNFRp55−/− mice compared with their wild-type (WT) counterparts. This effect was accompanied by increased levels of Yersinia LPS in the joints of knockout mice. Analysis of the local cytokine profile revealed greater amounts of IFN-γ and IL-17 in arthritic joints of TNFRp55−/− mice compared with WT mice at day 21 postinfection. Moreover, altered IL-17 and IFN-γ production was observed in mesenteric and inguinal lymph nodes of Yersinia-infected TNFRp55−/− mice, as well as in spleen cells obtained from infected mice and restimulated ex vivo with bacterial Ags. Increased levels of cytokine secretion were associated with a greater frequency of CD4+IL-17+, CD4+IFN-γ+, and IL-17+IFN-γ+ cells in TNFRp55−/− mice compared with WT mice. Remarkably, Ab-mediated blockade of IL-17 and/or IFN-γ resulted in reduced joint histological scores in TNFRp55−/− mice. A mechanistic analysis revealed the involvement of p40, a common subunit of heterodimeric IL-12 and IL-23, in the generation of augmented IFN-γ and IL-17 production under TNFR p55 deficiency. Taken together, these data indicate that, in the absence of TNFR p55 signaling, Th1 and Th17 effector cells may act in concert to sustain the inflammatory response in bacterial-induced arthritogenic processes.
T Cell-Induced Mast Cell Activation: A Role for Microparticles Released from Activated T Cells
Authors: Shefler Irit , Salamon Pazit , Reshef Tamar , Mor Adam , Mekori Yoseph A. 
Published: September 2010

Abstract
Close physical proximity between mast cells and T cells has been demonstrated in several T cell-mediated inflammatory processes. However, the way by which mast cells are activated in these T cell-mediated immune responses has not been fully elucidated. We previously identified and characterized a novel mast cell activation pathway initiated by physical contact with activated T cells and showed that this pathway is associated with degranulation and cytokine release. In this study, we provide evidence that mast cells may also be activated by microparticles released from activated T cells that are considered miniature versions of a cell. Microparticles were isolated from supernatants of activated T cells by Centricon filtration or by high-speed centrifugation and identified by electron microscopy, flow cytometry (Annexin stain), and expression of the integrin LFA-1. Stimulated T cells were found to generate microparticles that induce degranulation and cytokine (IL-8 and oncostatin M) release from human mast cells. Mast cell activation by T cell microparticles involved the MAPK signaling pathway. The results were similar when mast cells were stimulated by activated fixed T cells or by whole membranes of the latter. This suggests that microparticles carry mast cell-activating factors similar to cells from which they originate. By releasing microparticles, T cells might convey surface molecules similar to those involved in the activation of mast cells by cellular contact. By extension, microparticles might affect the activity of mast cells, which are usually not in direct contact with T cells at the inflammatory site.
Measurement of Small Intestinal Damage
Authors: Takeuchi Koji , Satoh Hiroshi 
Published: September 2010

AbstractMany animal models have been devised for investigating the pathogenesis of intestinal lesions and for screening drugs for the treatment of intestinal ulcers in humans. Recently, particular attention has been focused on NSAID‐induced intestinal lesions as a result of the development of the capsule endoscope and double‐balloon endoscope. Ischemic enteritis, one of the most dramatic abdominal emergencies, is known to cause severe damage to the small intestine by a significant decrease of arterial blood flow in the small intestine. In this unit, two animal models for small intestinal damage induced by NSAIDs or intestinal ischemia are described. Also included are methods for lesion induction and evaluation of the damage as well as the measurement of pathogenic functional and biochemical changes. Curr. Protoc. Toxicol. 45:21.7.1‐21.7.31. © 2010 by John Wiley & Sons, Inc.
Strategies to Optimize Protein Expression inE. coli
Authors: Francis Dana M. , Page Rebecca 
Published: September 2010

AbstractRecombinant protein expression inEscherichia coli(E. coli) is simple, fast, inexpensive, and robust, with the expressed protein comprising up to 50 percent of the total cellular protein. However, it also has disadvantages. For example, the rapidity of bacterial protein expression often results in unfolded/misfolded proteins, especially for heterologous proteins that require longer times and/or molecular chaperones to fold correctly. In addition, the highly reductive environment of the bacterial cytosol and the inability ofE. colito perform several eukaryotic post‐translational modifications results in the insoluble expression of proteins that require these modifications for folding and activity. Fortunately, multiple, novel reagents and techniques have been developed that allow for the efficient, soluble production of a diverse range of heterologous proteins inE. coli. This overview describes variables at each stage of a protein expression experiment that can influence solubility and offers a summary of strategies used to optimize soluble expression inE. coli.Curr. Protoc. Protein Sci. 61:5.24.1‐5.24.29. © 2010 by John Wiley & Sons, Inc.
ChemInform Abstract: Formation of SrSO4×1/2 H2O in an SrSO4‐H2O System and Its Solid Solution in a CaSO4‐SrSO4‐H2O System.
Authors: TAKAHASHI S. , SEKI M. , SETOYAMA K. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Electrochemical Studies of Tantalum in Fluorochloroaluminate Melts at 200‐450 °C.
Authors: CHEN G.‐S. , EDWARDS A. G. , MAMANTOV G. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Formation of Lithium‐Graphite Intercalation Compounds in Nonaqueous Electrolytes and Their Application as a Negative Electrode for a Lithium Ion (Shuttlecock) Cell.
Authors: OHZUKU T. , IWAKOSHI Y. , SAWAI K. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Corrosion Inhibition of Cobalt with a Thin Film of Cu‐BTA.
Authors: BRUSIC V. , FRANKEL G. S. , SCHROTT A. G. , PETERSEN T. A. , RUSH B. M. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Size Tailoring of Colloidal Zeolite Particles.
Authors: SCHOEMAN B. J. , STERTE J. , OTTERSTEDT J.‐E. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Texture of Xerogels Based on Ultradisperse Powders of Aluminum Oxide and Monohydroxide.
Authors: CHERTOV V. M. , LITVIN V. I. , MIRONYUK I. F. , TSYRINA V. V. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Ne+ + C60 Collisions: The Dynamics of Charge and Energy Transfer, Fragmentation, and Endohedral Complex Formation.
Authors: CHRISTIAN J. F. , WAN Z. , ANDERSON S. L. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The Role of Intermediate Oxidation States of Technetium in Catalysis of the Oxidation of Hydrazine by Oxoanions. Part 2. Perchlorate Ions.
Authors: KEMP T. J. , THYER A. M. , WILSON P. D. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Photocatalytic Reduction and Immobilization of Hexavalent Chromium at Titanium Dioxide in Aqueous Basic Media.
Authors: LIN W.‐Y. , WEI C. , RAJESHWAR K. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A New Fluorinated Dithiaselenatelluratetrazocinium Cation: Synthesis, Properties, and Structure.
Authors: HAAS A. , PRYKA M. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Ba9N(N3)(TaN4)2, a Nitridotantalate(V) with Nitride and Azide Ions.
Authors: HOEHN P. , KNIEP R. , MAIER J. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Crystal Structure of Ni0.5VOPO4×2 H2O, a Layered Vanadyl(IV) Phosphate Hydrate with Tetragonal Symmetry.
Authors: LII K.‐H. , WU L.‐S. , GAU H.‐M. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Structural Change in Lithium Intercalation of Defect Perovskite LiCuM3O9 (M: Ta, Nb).
Authors: SATO M. , JIN T. , HAMA Y. , UEMATSU K. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Knowledge of RbBa3Ca4Cu3V7O28.
Authors: VON POSTEL M. , MUELLER‐BUSCHBAUM HK. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The IR Spectrum of Chlorophosphaethyne, ClCP.
Authors: MCNAUGHTON D. , BRUGET D. N. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The a2 “Forbidden” Band in CH2F2: ν5‐ν7 Coriolis Interaction.
Authors: DEO M. N. , D'CUNHA R. , JOB V. A. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Substituent, Solvent, and Temperature Effects on Radiative and Nonradiative Processes of Singlet Excited Fluorenone Derivatives
Authors: BICZOK L. , BERCES T. , MARTA F. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: N‐Aminoazoles. Part 2. Basicity and Protonation Site of N‐Aminoazoles: An Experimental (pKa, 13C and 15N NMR Spectroscopy and Crystallography) and Theoretical Study
Authors: CLARAMUNT R. M. , SANZ D. , CATALAN J. , FABERO F. , GARCIA N. A. , FOCES‐FOCES C. , LLAMAS‐SAIZ A. L. , ELGUERO J. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Spectroscopy and the Structure of Molecules and Molecular Systems
Authors: SEVERAL AUTHORS SEVERAL AUTHORS 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Two Novel Ten‐Membered Ring Compounds: 1,2,5,8‐Dithiadiazecine‐6,7‐ diones.
Authors: YAMAGUCHI K. , ITOH T. , NAGATA K. , OKADA M. , OHSAWA A. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: 15,16‐Bis(dispiro(2.0.2.1)hept‐7‐ylidene)hexaspiro(2.0.2.0.0.0.2.0.2.0. 2.0)hexadecane, C30H32.
Authors: YUFIT D. S. , STRUCHKOV Y. T. , KOZHUSHKOV S. I. , DE MEIJERE A. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.