100,537 research outputs found
Letter, [Author unclear] to Paulina T. Merritt
No full textHandwritten letter to Paulina Merritt from an unknown author, October 1, 1876.
Evaluation of the tissue response of organic, metallic, ceramic and osteoceramic tooth roots
No full textFour classes of materials, inert organic, inert metal, inert ceramic and biologically-active osteoceramic were implanted in the edentulous mandibles of dogs. Tissue response was evaluated at 3, 6, 9, 12 and 18 months by light microscopy; microradiography; clinical evaluation for mobility, rotation, bleeding and radiography; and epi fluorescent analysis of bone growth labels. The pyrolytic carbon implants were not osseous integrated. The bone contact area of the sapphire and titanium alloy implants increased to 60 and 80%, respectively, at 12 months; but decreased to 20% and 60% at 18 months. The area for the osteoceramic was 80% at three months and remained at that level. These results indicate superior tissue response for the osteoceramic material, a ceramic composite of Ca-3(PO4)(2) and MgAl2O4.PT: S; CR: ALBREKTSSON T, 1988, J PERIODONTOL, V59, P287 BAGAMBISA FB, 1990, INT J ORAL MAXILLOF, V5, P217 BLOCK MS, 1990, J ORAL MAXIL SURG, V48, P174 BRUNSKI J, 1988, CDAJ, P66 CARLSSON L, 1994, J ORTHOPAED RES, V12, P274 COOK SD, 1987, INT J ORAL MAXILLOF, V7, P485 DEGROOT K, 1980, BIOMATERIALS, V1, P47 DENISSEN HW, 1986, CURRENT PRACTICE SER, V29, P372 GOTTLANDER M, 1992, CLIN ORAL IMPLAN RES, V3, P71 GOTTLANDER M, 1992, INT J ORAL MAXILLOF, V7, P485 JANIKOWSKI T, 1969, P IOWA ACAD SCI, V76, P113 JARCHO M, 1977, J BIOENG, V1, P70 JOHNSON BW, 1992, J CALIF DENT ASSOC, V20, P33 MCGEE TD, 1974, 3787900, US MCGEE TD, 1974, J BIOMED MAT RES S, V5, P137 MCGEE TD, 1995, ENCY HDB BIOMATERIAL, V1, P69 MCGEE TD, 1995, ENCY HDB BIOMATERIAL, V2, P1413 MCKINNEY RJ, 1982, J ORAL IMPLANT, V10, P619 MEFFERT RM, 1985, IOWA SOC PERIOD 0301 MEFFERT RM, 1987, INT J PERIODONT REST, V4, P9 SCHNITMAN PA, 1993, J AM DENT ASSOC, V124, P39 STILLMAN N, 1993, J AM DENT ASSOC, V124, P51 TWEDEN KS, 1987, THESIS IOWA STATE U VERHEYEN CCPM, 1993, J BIOMED MATER RES, V27, P433 WEINLANDER M, 1992, INT J ORAL MAXILLOF, V7, P491; NR: 25; TC: 3; J9: MATER SCI FORUM; PG: 20; GA: BM15ESource type: Electronic(1
Enhancing Graph Edit Distance Computation: Stronger and Orientation-Based ILP Formulations
No full textThe graph edit distance (GED) is among the most widely used graph similarity measures in practice. It asks for a minimum cost edit path between two given labeled graphs G and H, where the edit path is defined as a sequence of operations (e.g., node and edge insertions, deletions or substitutions) that successively transform the graph G into H. In this work, we suggest a new ILP formulation (FORI) based on orienting the corresponding edge variables. Moreover, we suggest enhancing two state-of-the-art ILP formulations by incorporating additional inequalities. We theoretically compare the strength of the formulations with respect to their Linear Programming relaxations. The result is a hierarchy with (FORI) at the top. Our extensive evaluation on widely used benchmark sets shows that our improved formulations run significantly faster than the previous ones. These allow to solve to proven optimality all the reference instances from common databases, such as the IAM Graph Database, many of which were prohibitive with state-of-the-art methods. Moreover, we are able to compute the GED of a small pattern and a large graph such as CORA and PUBMED, having up to 19,717 nodes and 44,327 edges
Handwritten biographical information on Paulina T. McClung Merritt
No full textA handwritten biography of Paulina T. McClung Merritt by an unknown author, 1892.
Heterogeneous and tissue-specific regulation of effector T cell responses by IFN-gamma during Plasmodium berghei ANKA infection.
No full textIFN-γ and T cells are both required for the development of experimental cerebral malaria during Plasmodium berghei ANKA infection. Surprisingly, however, the role of IFN-γ in shaping the effector CD4(+) and CD8(+) T cell response during this infection has not been examined in detail. To address this, we have compared the effector T cell responses in wild-type and IFN-γ(-/-) mice during P. berghei ANKA infection. The expansion of splenic CD4(+) and CD8(+) T cells during P. berghei ANKA infection was unaffected by the absence of IFN-γ, but the contraction phase of the T cell response was significantly attenuated. Splenic T cell activation and effector function were essentially normal in IFN-γ(-/-) mice; however, the migration to, and accumulation of, effector CD4(+) and CD8(+) T cells in the lung, liver, and brain was altered in IFN-γ(-/-) mice. Interestingly, activation and accumulation of T cells in various nonlymphoid organs was differently affected by lack of IFN-γ, suggesting that IFN-γ influences T cell effector function to varying levels in different anatomical locations. Importantly, control of splenic T cell numbers during P. berghei ANKA infection depended on active IFN-γ-dependent environmental signals--leading to T cell apoptosis--rather than upon intrinsic alterations in T cell programming. To our knowledge, this is the first study to fully investigate the role of IFN-γ in modulating T cell function during P. berghei ANKA infection and reveals that IFN-γ is required for efficient contraction of the pool of activated T cells
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Pelevin’s Trinity in the novel “t”: author – protagonist – reader
No full textThe article attempts to interpret Pelevin's artistic strategy in the novel "T" by exploring its subject organization and addressing the key problems of the author, the protagonist, and the reader as they are seen by the researcher. The article analyzes the peculiarities of constructing the narrative reality in the novel "T", and goes on to discuss Pelevin's philosophic models of the development of the humankind, and the emergence of his new anthropology
Measuring industry-science links through inventor-author relations: A profiling method
No full textIn this pilot study we examine the performance of text-based profiling in recovering a set of validated inventor-author links. In a first step we match patents and publications solely based on their similarity in content. Next, we compare inventor and author names on the highest ranked matches for the occurrence of name matches. Finally, we compare these candidate matches with the names listed in a validated set of inventor-author names. Our text-based profile methodology performs significantly better than a random matching of patents and publications, suggesting that text-based profiling is a valuable complementary tool to the name searches used in previous studies.innovation; industry-science links; text-based profiling;
Wave turbulence of a rotating array of quantized vortices in the T → 0 temperature limit
No full textThe dynamics of quantized vortices in the zero temperature limit is currently of great interest, particularly in the case of the Fermi superfluid He-B. Here we study wave turbulence, generated by the librating motion of a rotating cylindrical container filled with He-B, in the limit of vanishing viscous forces at temperatures . The polarization of the quantized vortices with respect to the axis of rotation is measured using non-invasive NMR techniques. We observe a decrease of the polarization when the librating motion is started, and a two-stage relaxation process when the modulation of the rotation velocity is stopped. The first relaxation process is associated with the dissipation of large-scale flow stored in inertial waves and the solid body rotation of the vortex array. From the decay of these energy reservoirs we determine the rate of energy dissipation of large-scale flow. The later second process is related to the relaxation of Kelvin waves on individual vortices. This process is monitored by the recovery of the polarization. The existence of a Kelvin wave cascade at the lowest temperatures is currently a central open question. We supply some evidence for the cascade
Apparent contradiction between negative effects of UV radiation and positive effects of sun exposure
No full textWe would like to comment on the three contributions in the Journal of the National Cancer Institute, Vol. 97, No. 3, February 2, 2005: Kathleen M. Egan, Jeffrey A. Sosman, William J. Blot: Editorial: Sunlight and Reduced Risk of Cancer: Is the Real Story Vitamin D? (pp. 161-163) ; Marianne Berwick, Bruce K. Armstrong, Leah Ben-Porat, Judith Fine, Anne Kricker, Carey Eberle, Raymond Barnhill: Sun Exposure and Mortality From Melanoma. (pp. 195-199) ; Karin Ekström Smedby, Henrik Hjalgrim, Mads Melbye, Anna Torrång, Klaus Rostgaard, Lars Munksgaard, et al.: Ultraviolet Radiation Exposure and Risk of Malignant Lymphomas. (pp. 199-209)
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